Search once across OSI-approved open source, source-available projects, and proprietary products.
Open-source community platform for discussion, chat, and support
Discourse is a self-hosted community platform that combines threaded discussion with built-in chat, search, and moderation tools.
Painless self-hosted Git service with a tiny resource footprint
Gogs is a self-hosted Git service written in Go that ships as a single binary with repository hosting, issues, pull requests, and a wiki.
Open-source API client that stores collections as plain-text files
Bruno is an open-source desktop API client that stores collections as plain-text Bru files on your filesystem, so teams can version them in Git.
Local-first block notes with backlinks, sync, and flashcards
SiYuan is a local-first, privacy-first note-taking app that organizes Markdown notes as linked content blocks with backlinks, databases, and end-to-end encrypted sync.
Self-hosted document management that turns paper scans into a searchable archive
Paperless-ngx is a self-hosted document management system that OCRs scanned paper and office documents into a searchable, tagged online archive.
Open-source vector database for GenAI search at billion scale
Milvus is an Apache-2.0 open-source vector database that stores and indexes embedding vectors for millisecond similarity search over very large collections.
Self-hosted secure team chat for mission-critical organizations
Rocket.Chat is a self-hosted team chat platform with a Slack data importer, end-to-end encryption, and cloud, on-premises, or air-gapped deployment.
The open-source, self-hosted AI chat platform for every model.
LibreChat is a free, self-hosted chat workspace for many AI providers and local models, with agents, retrieval, and team controls.
Open-source payment switch unifying 270+ processors behind one integration
Hyperswitch is an open-source payment switch that routes transactions across 270+ processors from one integration, with vault, 3DS, retries, and reconciliation.
Speech recognition that runs anywhere, with no runtime
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.
Code-first headless CMS and Next.js backend with an auto-generated admin panel.
Payload is a code-first, self-hosted headless CMS for Next.js that generates an admin panel with REST and GraphQL APIs from TypeScript config.
A privacy-first, open-source knowledge base
Logseq is a privacy-first, open-source knowledge base that organizes notes as an outliner of linked blocks, stored in local Markdown and Org files you control.
A Firefox-based browser focused on privacy, customization, and calm browsing
Zen Browser is a free and open-source Firefox-based web browser focused on privacy and customization, with Workspaces, Compact Mode, and community mods on macOS, Windows, and Linux.
Open-source desktop app for chatting with AI models fully offline
Jan is a free, open-source desktop app for chatting with AI models on your own computer, working fully offline once models are downloaded.
Design and prototyping built on open web standards
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.
Free open-source lossless video and audio cutter
LosslessCut is a free open-source editor for fast lossless trimming of video and audio on Windows, macOS, and Linux.
Self-hosted control server for Tailscale mesh networks
Headscale is a self-hosted control server for Tailscale clients that builds a private mesh network over WireGuard.
Browser-based personal cloud computer with apps and storage
Puter is a browser-based personal cloud computer with a virtual desktop, built-in apps, file storage, and a developer backend.
Open-source Python framework and runtime for building AI agent platforms
Agno is a Python framework and runtime for building agent platforms with memory, knowledge, and tool integrations.
Issue tracking and planning without per-seat pricing
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.
Multi-channel notification infrastructure for applications
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.
Open-source low-code platform for internal tools and dashboards
ToolJet is an open-source low-code platform for building internal tools, admin panels, and dashboards on databases and APIs, self-hosted or on ToolJet Cloud.
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