Free, self-hosted alternatives to the SaaS you already pay for
A curated directory of open source tools you can run yourself. Get the best new picks weekly, or jump straight into the directory.
Join 1,000+ developers · No spam · Unsubscribe anytime
Or browse the directory directlyBrowse all projects
74+ open source SaaS alternatives, curated and updated regularly.
Gitpod
A developer platform that provides on-demand, pre-configured cloud development environments that automatically integrate tools, libraries, and dependencies for software creation.
Whatsback Web
Host Your Own WhatsApp Provider - Free and Open Source
Reminders MenuBar
A macOS menu bar application that allows users to view, create, edit, and manage Apple Reminders with a simple and intuitive interface.
Redash
An open-source data visualization and dashboard tool that enables users to explore, query, and share data from multiple sources through an intuitive browser-based interface.
AnythingLLM
A comprehensive AI application that allows users to chat with documents, use AI agents, and create customizable multi-user environments with easy setup and configuration.
Rocket.Chat
An open-source communication platform enabling secure, real-time conversations for organizations, supporting team collaboration, customer service, and flexible deployment across various channels.
Meilisearch
A lightning-fast, developer-friendly search engine that enables seamless, intuitive search experiences across applications and websites with advanced features and easy integration.
Cal.com
An open-source scheduling infrastructure that gives users full control over their scheduling workflow, data, and appearance. Designed as a flexible, self-hostable alternative to Calendly.
Appwrite
An end-to-end backend server for web, mobile, and native applications that simplifies backend development by providing a comprehensive set of microservices and APIs.
Plausible
Simple, open source, lightweight (< 1 KB) and privacy-friendly web analytics alternative to Google Analytics.
Strapi
An open-source, flexible headless CMS built with JavaScript/TypeScript that enables developers to manage and deliver content across multiple platforms with customizable hosting options.
Sentry
A developer platform for error tracking and performance monitoring that helps developers identify, resolve, and gain insights into application issues across multiple programming languages and frameworks.
Open WebUI
An extensible, self-hosted AI platform that supports offline operation, multiple LLM runners, and provides a user-friendly interface for AI interactions.
Payload CMS
A Next.js native, open-source headless CMS that installs directly in your existing app folder, offering a flexible and powerful content management solution.
Outline
A collaborative knowledge base platform for teams, built with React and Node.js, offering an intuitive way to share and organize information.
Checkmate
An open-source uptime and infrastructure monitoring application that tracks the operational status and performance of servers and websites, providing real-time alerts and comprehensive monitoring capabilities.
NocoDB
NocoDB is an open-source Airtable alternative that transforms your database into a collaborative spreadsheet. It provides an intuitive interface for managing, editing, and sharing data without requiring extensive technical expertise.
Documenso
An open-source digital document signing platform that aims to provide a trusted, self-hostable alternative to traditional signing tools, empowering users with transparency and control.
OpenStatus
An open-source synthetic monitoring platform that helps monitor websites and APIs globally, providing notifications about downtime and performance issues.
Kap
An open-source screen recording application that allows users to easily capture, record, and share screen content using web technologies.
Insomnia
An open-source, cross-platform API client that enables debugging, designing, testing, and mocking APIs across multiple protocols and formats.
Matomo
An open-source web analytics platform that provides full data ownership, privacy, and powerful tracking capabilities for websites.
Markdown Resume
An open-source tool for creating professional resumes using markdown, offering live preview, theme customization, and PDF export.
Zettlr
Zettlr is a one-stop publication workbench with integrated note-taking, citations, and a powerful search.
IINA
A modern, feature-rich video player exclusively designed for macOS, offering advanced playback capabilities and a sleek user interface.
Chatbox
User-friendly Desktop Client App for AI Models/LLMs (GPT, Claude, Gemini, Ollama...)
Netdata
An open-source observability platform for real-time infrastructure monitoring, providing instant insights into system performance with zero-configuration installation and powerful analytics capabilities.
Focalboard
An open-source project management tool that helps teams define, organize, track, and manage work across individuals and teams. Available as a personal desktop app and server solution.
CodeFlash
Codeflash is a Python optimization tool that uses advanced LLMs to improve code performance while preserving correctness.
Uptime Kuma
A self-hosted monitoring tool for tracking website and service uptime with an easy-to-use interface and extensive notification capabilities.