Search once across OSI-approved open source, source-available projects, and proprietary products.
Self-hostable customer engagement for automated lifecycle messaging
Dittofeed is a self-hostable customer engagement platform that automates marketing and transactional messages across email, SMS, webhooks, and mobile push.
Self-hosted open source budgeting and wealth planner
Financial Freedom is a self-hosted, open source personal finance planner for budgeting and building wealth while keeping data on your own server.
Open-source E2E-encrypted password manager for people and teams
Padloc is an open-source, end-to-end encrypted password manager for Windows, macOS, Linux, iOS, Android, and major browsers. It stores passwords, credit cards, notes, documents, and license keys in encrypted vaults that sync through the Padloc cloud, which cannot read them. It serves individuals, families, and teams that want transparent, audited credential management with secure sharing.
Self-hosted WireGuard VPN with per-connection MFA and built-in SSO
Defguard is a self-hosted access platform that combines WireGuard VPN, identity management, and per-connection multi-factor authentication.
Open-source OpenTelemetry observability for LLM apps and AI agents
OpenLIT is an Apache-2.0 platform tracing and evaluating LLM apps and AI agents over OpenTelemetry, self-hosted with Docker or Kubernetes.
Proof-of-work CAPTCHA alternative with no cookies or tracking
ALTCHA is a self-hosted CAPTCHA alternative that blocks bots and form spam with a silent proof-of-work challenge instead of image puzzles.
Federated book tracking and social reading without the ad platform
BookWyrm is a federated social reading platform: readers track what they are reading, write reviews, and follow friends across independently run instances.
Open-source billing layer that sits on top of Stripe
Autumn is a billing layer that sits between a product and Stripe. Plans, prices, entitlements, and usage metering are defined in Autumn, while payment processing and subscription records stay inside Stripe, so teams keep their existing Stripe setup instead of migrating off it.
Open-source prototyping with built-in usability testing
Quant-UX is a free, open-source tool for building interactive prototypes, running usability tests with real users, and analyzing results with heatmaps.
Self-hosted open-source web analytics with full data ownership
OpenWebAnalytics is a GPL-licensed web analytics framework that site owners host on their own PHP and MySQL servers to track visitors with full data ownership.
Stateless open-source API gateway for aggregation and traffic control
KrakenD is a stateless, open-source API gateway written in Go that merges multiple backend calls into single endpoints with authentication, rate limiting, and observability.
Open-source design canvas with forms and database
Grida is an open-source design platform that pairs a Figma-style vector canvas with customer-facing forms, a Postgres-backed database, and a content backend for designers and frontend developers.
Peer-to-peer encrypted team chat over Tor with no servers
Quiet is a peer-to-peer team chat app that syncs encrypted messages directly between member devices over Tor, with no central server.
Self-hosted health intelligence platform unifying wearable data
Open Wearables is a self-hosted, MIT-licensed platform that unifies wearable data behind one API with open health scores.
Open-source API client for REST, GraphQL, and WebSocket testing
Firecamp is a free, open-source API development client for testing REST, GraphQL, WebSocket, and SocketIO endpoints from one desktop or web app.
Self-hosted tasks and chores with fair rotation and smart scheduling
Donetick is a self-hosted app for managing household tasks and chores with recurring schedules, assignee rotation, and shared circles.
End-to-end encrypted messaging and collaboration for enterprises
Wire is an end-to-end encrypted messaging and collaboration platform for enterprises and governments, with open-source clients and cloud or on-premises hosting.
Self-hosted open-source billing and invoicing for hosting providers
Paymenter is a self-hosted open-source billing platform for hosting providers, automating subscriptions, invoicing, and service provisioning.
Post-quantum encrypted storage, sync, and sharing you can self-host
Peergos is a peer-to-peer, end-to-end encrypted drive for storing, syncing, and sharing files, with a self-hostable open-source server.
Privacy-focused proof-of-work CAPTCHA with no tracking or puzzles
mCaptcha is a free, self-hosted CAPTCHA that protects websites and forms with proof-of-work challenges instead of image puzzles or visitor tracking.
Open-source KYC, KYB, and risk decisioning workflows for fintech teams
Ballerine is an open-source platform for identity verification and risk decisioning aimed at fintech and marketplace teams. It combines vendor orchestration for KYC, KYB, and sanctions screening with a no-code rules and workflow engine plus a case-management backoffice for manual review. The codebase is a TypeScript monorepo with a NestJS workflows service and React frontends, and the company also sells a managed SaaS with usage-based pricing. Note: the public repo currently banners itself as undergoing a major rebuild and not actively supported, so intake should confirm maintenance status before publication.
dbt-native data observability with tests, lineage, and alerts
Elementary Data is a dbt-native data observability tool that monitors tables with tests, anomaly detection, lineage, and alerts.
Open-source visual website builder for fast, responsive sites
Frappe Builder is a self-hosted, low-code website builder that turns drag-and-drop designs into fast, responsive pages with one-click publishing.
The proprietary products most often replaced by something in this directory.
Notion
Notion Labs
Documents, databases, and project tracking in one workspace
13 open source alternatives
Google Analytics
Web and product analytics tied to Google's ad stack
12 open source alternatives
Datadog
Datadog
Infrastructure monitoring, logs, and tracing in one platform
10 open source alternatives
Dropbox
Dropbox
File sync and sharing across devices and teams
10 open source alternatives
Slack
Salesforce
Channel based team messaging with a large integration ecosystem
10 open source alternatives
Auth0
Okta
Hosted identity covering login, SSO, and multi-factor
9 open source alternatives
Where the directory is growing fastest this month.
Running and talking to language models, on your own hardware or someone else's.
32 products+14.2%
Frameworks and runtimes for building, orchestrating, and supervising autonomous agents.
73 products+12.4%
Assistants that read a codebase and carry out engineering work from natural language instructions.
26 products+11%
Utilities that sit in the daily loop of writing, testing, and shipping software.
292 products+7.2%
Tools that connect applications and run multi step processes without manual work.
57 products+6.4%
Metrics, logs, traces, and error reporting for systems in production.
60 products+6.1%
774 results