OpenSEO covers keyword research, backlink analysis, competitor monitoring, and rank tracking in one self-hosted application, using DataForSEO as the data source so you pay for the data rather than the seat.
OpenCode is a coding agent that runs where you already work rather than in a separate chat window. The same session can be driven from a terminal, an editor extension, or a desktop client, and it keeps context across all three.
Copilot put model assisted completion in front of a very large number of developers first, and inline suggestion in the editor remains the interaction most people mean by AI coding.
Cursor forked VS Code rather than extending it, which let it change the editing model itself. Multi-file edits, codebase-wide context, and a tab completion that predicts the next edit rather than the next token are the result.
Firecrawl handles the unglamorous part of feeding the web to a language model: rendering JavaScript, following pagination, stripping navigation and cookie banners, and returning markdown or structured JSON that a model can actually use.
VoiceInk transcribes speech on the machine itself using a local Whisper model, then runs the raw transcript through a cleanup pass that removes filler and applies punctuation.
Wispr Flow is dictation that accounts for how people actually speak. False starts, filler, and self-correction are removed, and the output is punctuated text rather than a transcript.
Autonomous agents that complete real engineering tasks
Stars85.8K
Commit8h ago
LicenseMIT
OpenHands runs agents that plan and execute multi-step engineering work: reading a repository, editing files, running tests, and iterating until a task is done. Each agent works inside a sandboxed runtime rather than on the host machine.
Hanko is an authentication service built passkey-first rather than passkey-eventually. Passwords are optional from the start, and the hosted components handle the awkward parts of the WebAuthn ceremony that teams usually get wrong.
Hosted identity covering login, SSO, and multi-factor
CompanyOkta
Since2013
PricingFreemium
Auth0 made outsourcing authentication respectable. Social providers, enterprise SSO, multi-factor, and the awkward edges of OAuth arrive already handled, with rules and actions for the parts that are specific to your product.
Workforce identity and access management for enterprises
CompanyOkta
Since2009
PricingPaid
Okta is aimed at employee identity rather than customer identity: single sign-on across hundreds of business applications, lifecycle provisioning tied to a HR system, and the access reviews auditors ask for.
Multi-channel notification infrastructure for applications
Stars39.7K
Commit8h ago
LicenseUnknown
Novu takes the notification logic that usually ends up scattered across a codebase - which channel, which template, which quiet hours, which digest window - and puts it behind one API and one workflow editor.
Twilio turned telecommunications into an HTTP request, and the abstraction held. Sending a message to a phone anywhere in the world became a few lines of code rather than a carrier negotiation.
SendGrid handles the part of email nobody wants to own: reputation, authentication, bounce processing, and the endless negotiation with inbox providers about whether your mail is wanted.
Localisation platform with in-context translation editing
Stars4,085
Commit13h ago
LicenseApache-2.0
Tolgee's distinguishing feature is that translators work in the running application. Alt-click a string in the app and the editor opens over it, with surrounding context visible, which removes most of the ambiguity that produces bad translations from a spreadsheet.
Crowdin coordinates the people, files, and machine translation involved in shipping a product in more than one language. Source strings sync from a repository, translators work in the web editor, and translated files come back on merge.
Twenty rebuilds CRM around the interaction patterns people already know from modern productivity tools: keyboard navigation, inline editing, flexible record views, and a data model you can extend without a consultant.
Salesforce is less a product than a platform with a CRM at the centre. Objects, fields, validation, and automation are all configurable, and an entire consulting industry exists to configure them.
HubSpot's free CRM is a genuine product rather than a trial, and that is the strategy: get the contact database in place, then sell the marketing, sales, and service hubs around it.
Schedule and analyse posts across 30+ social networks
Stars35.3K
Commit8h ago
LicenseAGPL-3.0
Postiz is a self-hostable scheduler for teams that publish to many networks and do not want to pay per seat for the privilege. It covers planning, drafting, approval, and publishing, with AI assistance for turning one post into per-network variants.
Social media scheduling with a deliberately small surface
CompanyBuffer
Since2010
PricingFreemium
Buffer schedules posts and reports on them, and has resisted becoming a suite for over a decade. That restraint is why it stays usable for a one person marketing function.
Build and deploy AI agents and RAG pipelines visually
Stars154.1K
Commit8h ago
LicenseUnknown
Dify is where a prompt experiment becomes something a team can operate. Workflows are assembled on a canvas, datasets are indexed and versioned, and every deployment gets an API endpoint with logging and cost tracking attached.
Internal tool builder assembled from components and queries
CompanyRetool
Since2017
PricingFreemium
Retool exists because internal admin panels are important, tedious, and never prioritised. It connects to databases and APIs directly and puts a drag and drop interface over them, so an operations tool takes an afternoon rather than a sprint.
Web and product analytics in one cookie-free dashboard
Stars6,832
Commit3d ago
LicenseAGPL-3.0
OpenPanel merges the two dashboards most teams keep open side by side: page-level web analytics and event-level product analytics. Funnels, retention curves, and session replay sit next to traffic sources rather than in a separate product.
Mixpanel answers behavioural questions rather than traffic ones: which sequence of actions precedes retention, where a funnel leaks, and how a cohort from March differs from one from June.
Amplitude covers similar ground to Mixpanel with a stronger pull towards experimentation and governance. Event taxonomies can be enforced, which matters once more than one team is instrumenting the same product.
Screen recorder with editing and instant shareable links
Stars21.4K
Commit16h ago
LicenseAGPL-3.0
Cap records screen and camera, then gives you an editor with backgrounds, automatic zooms, and cursor smoothing before you share a link. It is built in Rust on Tauri, so the binary is small and recording does not tax the machine it is recording.
Screen recording with automatic zooms and polished motion
CompanyScreen Studio
Since2022
PricingPaid
Screen Studio produces product demos that look edited without anyone editing them. Cursor movement is smoothed, clicks trigger zooms, and the resulting motion reads as deliberate rather than as somebody's screen recording.
Asynchronous screen and camera recording shared by link
CompanyAtlassian
Since2016
PricingFreemium
Loom's contribution was the workflow, not the recording. Stop the recording and the link is already on your clipboard, which is what made replacing a meeting with a three minute video actually happen.
Parlant addresses the problem that stops most support agents from shipping: a model that is helpful ninety-five percent of the time is not safe to put in front of customers. It manages behaviour through explicit, context-matched guidelines rather than one long prompt.
Drag-and-drop builder for agents and RAG pipelines
Stars154K
Commit10h ago
LicenseMIT
Langflow turns pipeline construction into a graph you can see. Components are Python underneath, so a flow that outgrows the canvas can be exported and run as code rather than rebuilt.
Browser Use gives an agent a real browser rather than an HTTP client. It handles the translation between a model's intent and DOM actions, keeps a structured representation of the page in context, and recovers from the usual navigation failures.
Browserbase runs the browsers so you do not have to. Sessions, proxies, captcha handling, and stealth configuration are managed, which removes the least interesting and most fragile part of building anything that scrapes or automates the web.
Continuous compliance automation across many frameworks
Stars297
Commit17h ago
LicenseApache-2.0
Openlane automates the evidence collection and control tracking behind SOC 2, ISO 27001, GDPR, and a dozen other frameworks, mapping shared controls once rather than per framework.
Compliance automation for SOC 2, ISO 27001, and friends
CompanyVanta
Since2018
PricingPaid
Vanta turned compliance from a consulting engagement into a software subscription. It connects to cloud accounts, identity providers, and code hosting, then continuously checks controls and collects the evidence an auditor will ask for.
Ollama reduced local model hosting from an afternoon of CUDA troubleshooting to a single pull command. It handles model download, quantisation selection, GPU offloading, and memory management, and exposes an OpenAI-compatible endpoint on localhost.
Desktop application for running language models locally
CompanyElement Labs
Since2023
PricingFree
LM Studio made local models approachable for people who do not want a terminal. Browse a catalogue, download a quantisation that fits the machine, and chat, with hardware requirements explained in plain language.
LobeChat is the most designed of the open chat front ends. Plugins, an assistant marketplace, voice input and output, and vision support are all present, and the interface holds up next to commercial products.
OpenCut is a timeline video editor that installs nothing and uploads nothing. Media stays in the browser, processing happens locally through WebCodecs, and there is no account step before you can cut a clip.
CapCut is free, capable, and shaped entirely around vertical video for social platforms. Auto captions, trend templates, and one-tap effects remove most of the craft barrier to publishing.
Anthropic's assistant, strongest on long documents and code
CompanyAnthropic
Since2023
PricingFreemium
Claude is positioned around careful reasoning over long inputs. The large context window makes whole-repository and long-document work practical in a way that shorter context assistants cannot match.
One chat interface for every model you run or connect
Stars150.5K
Commit10h ago
LicenseBSD-3-Clause
Open WebUI is the front end that turns a local inference server into something a household or a team can actually use. It handles accounts, conversation history, document retrieval, and model switching, and speaks to both local runtimes and hosted APIs.
OpenAI's assistant and the interface that set the pattern
CompanyOpenAI
Since2022
PricingFreemium
ChatGPT is the product that made conversational assistants ordinary. Beyond the chat box it now covers file analysis, image generation, web browsing, voice, and custom assistants sharing one account.
Visual workflow automation with room to drop into code
Stars203K
Commit8h ago
LicenseUnknown
n8n sits between a no-code automation builder and a scripting environment. Workflows are assembled on a canvas from several hundred integrations, and any node in that canvas can be replaced with a JavaScript or Python function when the visual version stops being expressive enough.
Hosted automation connecting thousands of applications
CompanyZapier
Since2011
PricingFreemium
Zapier's moat is the integration catalogue. Almost anything with an API is already connected, maintained by someone else, and works without a developer, which is worth a great deal to teams with no engineering capacity to spare.
Inference engine that runs LLMs on almost any hardware
Stars126.6K
Commit8h ago
LicenseMIT
llama.cpp is the layer most local model tooling is built on. It is a C and C++ inference engine with no Python runtime, aggressive quantisation support, and hand-tuned kernels for a remarkably wide range of hardware.
Collaborative wiki with real-time editing and diagrams
Stars15.4K
Commit2d ago
LicenseAGPL-3.0
Docmost is a documentation workspace with real-time collaborative editing, nested spaces, and diagram support built in rather than embedded from elsewhere.
Photo library synced through iCloud across Apple devices
CompanyApple
Since2015
PricingPaid
Apple Photos does most of its analysis on the device rather than in the cloud, so face grouping and object search work without the library being readable by the vendor. Sync happens through iCloud, and the library is a first party part of the operating system rather than an app you install.
Self-hosted photo and video backup for your own server
Stars113.1K
Commit8h ago
LicenseAGPL-3.0
Immich replaces a cloud photo service with software that runs on hardware you own. Mobile apps for iOS and Android back up new photos and videos in the background, so the library on your server stays current without you thinking about it.
Cloud photo library with automatic backup and search
CompanyGoogle
Since2015
PricingPaid
Google Photos backs up everything a phone takes and then makes it findable. Search understands objects, places, and people without any tagging, and the timeline handles libraries in the hundreds of thousands without stalling.
Deploy applications to your own servers with one click
Stars48.9K
Commit8h ago
LicenseApache-2.0
Coolify is a deployment platform that runs on servers you already pay for. It builds from a Git repository, provisions databases, issues certificates, and handles rollbacks, without the per-instance pricing of a hosted platform.
No-code database and application builder you can host
Stars5,757
Commit8h ago
LicenseMIT
Baserow is a spreadsheet-shaped database with the API and permission model of a real backend underneath. Non-technical colleagues get grid, gallery, kanban, and calendar views; engineers get a REST API and webhooks over the same data.
Spreadsheet interface over a real relational database
CompanyAirtable
Since2015
PricingFreemium
Airtable let non-engineers build relational data models without knowing they were doing it. Linked records, typed fields, and multiple views over one table cover an enormous amount of internal tooling that would otherwise be a spreadsheet or a small application.
Ente stores photos and videos encrypted on the client, so the server holds ciphertext it cannot read. Sync, albums, and sharing all work on top of that constraint rather than around it.
Storage and document collaboration inside Workspace
CompanyGoogle
Since2012
PricingPaid
Google Drive is storage with an office suite attached, and the suite is the reason most organisations are on it. Docs, Sheets, and Slides collaborate in real time well enough that the underlying file storage barely gets thought about.
Remote desktop you can point at your own relay server
Stars122.3K
Commit11h ago
LicenseAGPL-3.0
RustDesk is remote desktop software where the relay server is a binary you can run yourself. That is the whole argument: the same convenience as the commercial tools, without your screen sessions transiting a vendor's infrastructure.
Dropbox made file sync boring in the best sense: a folder that is the same everywhere, with conflict handling that mostly does the right thing. Two decades on, the sync engine is still the part competitors struggle to match.
AnyDesk built its own codec for screen transport, and it shows: sessions over ordinary connections feel closer to local than most competitors manage. For support work where someone is watching you move their cursor, that latency difference matters.
Link management and attribution for modern marketing
Stars24.6K
Commit8h ago
LicenseAGPL-3.0
Dub is a link platform rather than a shortener. Every link carries analytics, UTM handling, device and geographic targeting, and conversion attribution back to the click that produced it.
Cal.com covers the booking link case well, but its real distinction is that scheduling is exposed as infrastructure. Availability, event types, and bookings all have APIs, and the booking page can be embedded rather than linked.
Calendly removed an email thread from every meeting anyone arranges with someone outside their company. Share a link, the other person picks from real availability, and both calendars update.
Secret management for applications and infrastructure
Stars21.8K
Commit8h ago
LicenseMIT
Infisical stores application secrets, syncs them into the platforms that need them, and rotates the ones that support rotation. Environments and folders keep development and production credentials properly separated.
Postgres-powered backend platform for production apps
Stars108.7K
Commit8h ago
LicenseApache-2.0
Supabase gives an application everything it needs on the server side without hiding the database behind a proprietary abstraction. The primitive is plain Postgres, and the platform layers authentication, generated APIs, storage, realtime subscriptions, and edge functions on top of it.
Firebase gets a product to users faster than almost anything else. Authentication, a realtime document database, storage, hosting, and functions arrive already wired together, with client SDKs that handle offline state.
Godot ships a complete engine, editor, and export pipeline under the MIT licence, which means no royalties, no revenue thresholds, and no licensing conversation before a project starts.
Commercial game engine with the widest platform reach
CompanyUnity Technologies
Since2005
PricingFreemium
Unity's advantage is distribution. Console certification, mobile export, XR headsets, and the middleware ecosystem around them are all solved problems, which is why studios keep choosing it even after several rounds of unpopular licensing changes.
Documenso handles electronic signature collection with the signing certificate, audit trail, and field placement you expect, while keeping the documents on infrastructure you control.
DocuSign is the name that makes a signature request unremarkable to the person receiving it, which is most of the value. Recipients already know what the email is and how to complete it.
Conversational forms built on a visual flow canvas
Stars9,240
Commit2d ago
LicenseAGPL-3.0
Typebot builds forms that behave like a conversation: one question at a time, branching on answers, with the flow assembled visually rather than written in code.
Local-first smart home automation with no cloud dependency
Stars90.2K
Commit8h ago
LicenseApache-2.0
Home Assistant runs on a box in your house and talks to devices directly rather than through their manufacturers' servers. That single design decision is why automations keep working when the internet is down, and why a discontinued cloud service does not brick your lights.
Google Assistant is the voice layer most smart home hardware supports first. Routines, broadcast messages, and device groups work across a very wide range of manufacturers with minimal setup.
Streaming aimed at audio quality and artist payout
CompanyBlock
Since2014
PricingPaid
Tidal competes on two things the larger services do not lead with: high resolution audio formats, and a payout model that directs a share of a subscription to the artists that subscriber actually listened to.
Streaming backed by YouTube's catalogue of everything
CompanyGoogle
Since2015
PricingFreemium
YouTube Music reaches material no licensed catalogue contains: live sets, remixes, covers, and regional uploads that never had a commercial release. For anyone whose listening goes past the mainstream, that coverage is decisive.
Speech recognition that runs anywhere, with no runtime
Stars43.2K
Commit1d ago
LicenseMIT
whisper.cpp is a C and C++ port of the Whisper speech recognition model with no Python dependency, quantised weights, and hardware acceleration across Apple Silicon, CUDA, and plain CPU.
Music streaming with lossless audio and no free tier
CompanyApple
Since2015
PricingFreemium
Apple Music ships lossless and spatial audio at no extra cost, which is the clearest technical differentiator in the category. Editorial curation is stronger than the algorithmic competition; algorithmic discovery is weaker.
Catalogue music streaming with algorithmic discovery
CompanySpotify
Since2008
PricingFreemium
Spotify's advantage is not the catalogue, which is broadly the same everywhere, but the recommendation layer on top of it. Discover Weekly and the radio features remain the reason many people stay.
Confluence is where large organisations put documentation that has to outlive the people who wrote it. Spaces, permissions, page trees, and approval workflows are built for scale and governance rather than for speed.
AFFiNE puts a document editor and an infinite canvas over the same content. A page can be read as a document or arranged spatially as a whiteboard, and edits in one mode are edits in the other.
Documents, databases, and project tracking in one workspace
CompanyNotion Labs
Since2016
PricingFreemium
Notion's insight was that a document and a database can be the same object. A page can be prose, a table, a board, or all three, and the same records can be viewed differently by different teams without duplication.
Miro is the canvas most distributed teams reach for when the work is thinking rather than producing: retrospectives, service maps, story mapping, and anything else that used to need a wall and sticky notes.
Design and prototyping built on open web standards
Stars42.2K
Commit21h ago
LicenseMPL-2.0
Penpot stores designs as SVG and uses CSS layout primitives - flex and grid - as its layout model, so what a designer builds maps onto what a developer implements rather than needing translation.
Figma moved interface design out of single-user desktop files and into a shared document, and the industry reorganised around it. Multiplayer editing, comments in context, and a link that always shows the current state changed how design and engineering hand work to each other.
Excalidraw's sketchy rendering is not decoration. Diagrams that look provisional invite comment, where a crisp vector diagram signals a decision already made, so it is unusually good at the early part of a design conversation.
Colourful work operating system for cross-functional teams
Companymonday.com
Since2014
PricingFreemium
monday.com presents work as configurable boards with strongly typed columns, then layers dashboards and automations on top. It is aimed at operations, marketing, and sales teams that want structure without a database.
Kanban boards simple enough that people actually use them
CompanyAtlassian
Since2011
PricingFreemium
Trello is a board, a list, and a card, and for a very long time that was all. The restraint is why it spread beyond software teams to weddings, house moves, and editorial calendars.
Work management for teams that are not only engineers
CompanyAsana
Since2012
PricingFreemium
Asana is aimed at the coordination work around delivery rather than at engineering tickets: campaigns, launches, onboarding, and the dependencies between them. Timeline and workload views are the parts teams adopt first.
Issue tracking built around speed and opinionated defaults
CompanyLinear
Since2019
PricingFreemium
Linear is fast in a way that changes behaviour. Keyboard navigation, instant sync, and a deliberately narrow feature set mean issues actually get filed, which is the hard part of any tracker.
Issue tracking and planning without per-seat pricing
Stars40.1K
Commit20h ago
LicenseAGPL-3.0
Plane covers the ground between a lightweight tracker and a full project suite: issues, cycles, modules, and roadmaps, with views that suit both engineers and the people asking them for dates.
Configurable issue tracking and agile planning at scale
CompanyAtlassian
Since2002
PricingFreemium
Jira can model almost any process an organisation has, which is both why it survives in large companies and why it is disliked in small ones. Workflows, fields, screens, and permission schemes are all configurable, and each configuration is a decision someone has to maintain.
Surveys and in-product research on your own infrastructure
Stars11.3K
Commit1d ago
LicenseAGPL-3.0
Formbricks covers both link surveys and in-product micro-surveys triggered by user behaviour, which is the combination most research tooling splits across two paid products.
Conversational forms that ask one question at a time
CompanyTypeform
Since2012
PricingFreemium
Typeform's premise is that a form which asks one question at a time gets finished more often than a wall of fields. For consumer facing surveys and lead capture that holds up, and completion rates are the number it sells on.
GlitchTip accepts events from the official Sentry SDKs, which means adopting it is a DSN change rather than an instrumentation project. Stack traces, breadcrumbs, releases, and issue grouping all work as expected.
Error tracking and performance monitoring for applications
CompanyFunctional Software
Since2012
PricingFreemium
Sentry is the tool most teams install first and remove last. An unhandled exception arrives with a stack trace, the release that introduced it, the users affected, and the breadcrumbs leading up to it.
Lightweight password vault server for Bitwarden clients
Stars48.1K
Commit4d ago
LicenseAGPL-3.0
Vaultwarden reimplements the Bitwarden server API in Rust so that it runs comfortably on a Raspberry Pi or a small VPS, while the official Bitwarden desktop, mobile, and browser clients connect to it unchanged.
Password and secret management for people and teams
CompanyAgileBits
Since2006
PricingPaid
1Password is the credential manager most often recommended to people who will not tolerate friction. The apps are good on every platform, sharing within a family or team is comprehensible, and the security model has held up under scrutiny.
Listmonk is a single Go binary and a Postgres database that handles subscriber lists, segmentation, campaigns, and bounce processing at a scale that would be expensive on a hosted platform.
Marketing email, audiences, and campaign reporting
CompanyIntuit
Since2001
PricingFreemium
Mailchimp made email marketing approachable for people who are not marketers. The editor, the templates, and the reporting are all pitched at a small business owner rather than at a growth team.
Commerce building blocks rather than a fixed storefront
Stars32.4K
Commit2d ago
LicenseMIT
Medusa is a set of commerce modules - cart, orders, pricing, inventory, fulfilment - exposed as APIs you compose, rather than a themed storefront you customise around the edges.
Hosted commerce covering storefront, checkout, and payments
CompanyShopify
Since2006
PricingPaid
Shopify's real product is checkout. Conversion on a Shopify checkout is high enough, and the payment, tax, and fraud handling behind it complete enough, that most merchants should think very hard before replacing it.
Lightweight web analytics without cookies or personal data
Stars23.5K
Commit2d ago
LicenseAGPL-3.0
Plausible answers the handful of questions most sites actually ask - what pages get read, where readers came from, what converted - and deliberately declines to answer the rest. There are no cookies, no cross-site identifiers, and no consent banner needed.
Web and product analytics tied to Google's ad stack
CompanyGoogle
Since2005
PricingFreemium
Google Analytics is free at the point of use because the data feeds an advertising business. For sites that advertise through Google, that integration is the entire value: audiences built here are usable directly in campaigns.
Typo-tolerant search that is fast to run and fast to tune
Stars52.3K
Commit1d ago
LicenseMIT
Meilisearch is a search engine you can be productive with in an afternoon. Indexing is a POST, relevance is tuned through an ordered list of ranking rules, and results come back typo-tolerant by default.
Hosted search with millisecond responses and ranking control
CompanyAlgolia
Since2012
PricingFreemium
Algolia is search as a managed service, tuned so hard for latency that typing into a search box feels like filtering a local list. Typo tolerance, synonyms, and merchandising rules are all configurable without touching the index code.
Zendesk is built for support as a function with headcount, shifts, and service level agreements, rather than for a founder answering email. Routing, macros, and SLA policies are the substance of it.
Customer conversations from every channel in one inbox
Stars24.7K
Commit1d ago
LicenseMIT
Chatwoot collects website chat, email, WhatsApp, Instagram, and SMS into a single agent inbox with shared assignment, canned replies, and a help centre.
Customer messaging combining chat, help centre, and bots
CompanyIntercom
Since2011
PricingPaid
Intercom put support, onboarding, and product messaging into one thread per customer. The messenger in the corner of a product is close to a genre convention now, and Intercom largely defined it.
API client that runs in the browser and stays fast
Stars74.2K
Commit1d ago
LicenseMIT
Hoppscotch is an API client that opens in a tab. Requests, collections, environments, and history are all there, and it starts in the time a desktop client takes to check for updates.
Postman is where most developers first poke at an API, and it grew from that into documentation, mock servers, monitoring, and team workspaces around shared collections.
A content platform that wraps your existing SQL database
Stars30.8K
Commit1d ago
LicenseBSL-1.1
Directus points at a SQL database you already have and generates an admin interface and an API over it, without imposing its own schema. Existing tables keep their names, types, and constraints.
Contentful separated content from presentation properly and early. Editors work with structured content models, and any number of front ends consume the same entries through an API.
Outline is a documentation workspace built around search and structure rather than infinite nesting. Collections, a strong editor, and genuinely fast full text search make it usable at the size where most wikis become write-only.
Focalboard is a board and table tool that runs as a desktop application against local files, or as a server for a team. It covers the kanban, table, and calendar views most planning needs without a subscription or an account.
Google's email client and the inbox most people mean
CompanyGoogle
Since2004
PricingFreemium
Gmail's search is still the reason to use it. Conversation threading, effectively unlimited retention on paid plans, and spam filtering that most self-hosted setups cannot match make it the default even for people uncomfortable with the arrangement.
Jitsi Meet gets to a working video call faster than anything else: open a URL, share it, done. No accounts, no downloads, no meeting identifiers to read out.
Zoom won on the least glamorous quality possible: calls connected, and kept working on poor networks when competitors did not. Everything else it has added sits on top of that reliability.
Self-hosted uptime monitoring with a clean status page
Stars76.4K
Commit4d ago
LicenseMIT
Uptime Kuma monitors HTTP endpoints, TCP ports, containers, and certificates, and notifies through almost a hundred channels. Setup is a container and a few minutes.
Voice, video, and text communities organised into servers
CompanyDiscord
Since2015
PricingFreemium
Discord was built for people who wanted to talk while doing something else, and that origin still shapes it. Persistent voice rooms you drop into, rather than scheduled calls, is a genuinely different model from workplace chat.
Teams wins on bundling rather than on craft. If an organisation already pays for Microsoft 365, Teams arrives at no additional cost with identity, files, and calendar already wired together.
Team messaging for organisations that cannot use hosted chat
Stars33.2K
Commit19h ago
LicenseAGPL-3.0
Mattermost is channel-based team chat designed for environments where the message history has to stay inside a boundary: defence, healthcare, and regulated finance are its natural constituency.
Channel based team messaging with a large integration ecosystem
CompanySalesforce
Since2013
PricingFreemium
Slack replaced internal email for a generation of companies by making conversation searchable and public by default. Channels, threads, and a very large app directory are the shape most team chat now copies.
Continuous file sync between your own devices only
Stars72.1K
Commit3d ago
LicenseMPL-2.0
Syncthing synchronises folders directly between devices with no server in the middle. There is no account, no storage quota, and no third party holding the data, because the data never leaves the set of machines you nominate.
File sync, sharing, and a suite of apps on your own server
Stars30.1K
Commit8h ago
LicenseAGPL-3.0
Nextcloud started as file sync and grew into a full collaboration suite: documents, calendar, contacts, chat, and an application ecosystem on top of the same account system.
Application performance monitoring with usage based pricing
CompanyNew Relic
Since2008
PricingFree
New Relic was the application performance monitoring product for a generation of web applications, and its repricing to per-user plus per-gigabyte was an explicit attempt to answer the complaint about host based billing.
Grafana is the visualisation layer that sits above other systems rather than a monitoring stack of its own. It queries Prometheus, Loki, PostgreSQL, ClickHouse, and dozens of other sources, and puts them on the same dashboard.
Infrastructure monitoring, logs, and tracing in one platform
CompanyDatadog
Since2010
PricingPaid
Datadog's value is correlation. A latency spike on a dashboard, the traces behind it, and the logs from the affected hosts are one or two clicks apart, which is the difference between a ten minute incident and an hour.