The most popular open-source apps

Free node based Workflow Automation Tool. Easily automate tasks across different services.

Get up and running with Llama 3.3, DeepSeek-R1, Phi-4, Gemma 3, and other large language models.

Build, test and deploy LLM applications.

User-friendly AI Interface, supports Ollama, OpenAI API.

Photo and video backup solution directly from your mobile phone (alternative to Google Photos).

Local hosted web application that allows you to perform various operations on PDF files, such as merging, splitting, file conversions and OCR.

Home automation platform.

Syncthing is an open source peer-to-peer file synchronisation tool.

Modern design AI chat framework supporting multiple AI providers, one click install MCP Marketplace and Artifacts / Thinking.

Fast and beautiful API request builder.

VS Code in the browser, hosted on a remote server.

Distributed, RESTful search and analytics engine.

Powerful, enterprise-ready, open source web server with automatic HTTPS.

Build detailed lists of to-do’s for different projects while tracking the status of each one. Open Source Notion Alternative.

Modern data exploration and visualization platform.

Headless CMS that lets developers build content APIs fast while giving content creators a friendly editing interface.

Framework for easily creating beautiful presentations using HTML.

Lightweight Bitwarden server API implementation written in Rust.

All-in-one desktop & Docker AI application with built-in RAG, AI agents, No-code agent builder, MCP compatibility, and more.

No-code platform that turns any database into a smart spreadsheet (alternative to Airtable and Smartsheet).

HTTP reverse proxy and load balancer that makes deploying microservices easy.

Knowledge base that works with a SQLite db file.

Backend for your next SaaS and Mobile app in one file.

Blackhole for Internet advertisements with a GUI for management and monitoring.

Web-based design and prototyping platform meant for cross-domain teams.

Track issues, epics, and product roadmaps in the simplest way possible (alternative to JIRA, Linear and Height).

Ultra relevant, instant and typo-tolerant full-text search API.

Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD.

A modern CRM offering the flexibility of open source, advanced features, and a sleek design.

Media server for audio, video, books, comics, and photos with a sleek interface and robust transcoding capabilities. Almost all modern platforms have clients, including Roku, Android TV, iOS, and Kodi.

End to end backend server for web, native, and mobile developers 🚀.

Note taking application with markdown editor and encryption support for mobile and desktop platforms. Runs client-side and syncs through a self hosted Nextcloud instance or similar (alternative to Evernote).

Just a blogging platform.

Free open source ERP system.

Federated microblogging server.

Build agents that monitor and act on your behalf.

Easy way for everyone in your company to ask questions and learn from data.

Run your AI models locally and generate images and audio (alternative to OpenAI and Claude).

Online appointment scheduling system.

Advanced forum / community solution based on Ruby and JS.

Painless self-hosted Git Service written in Go.

Platform to programmatically author, schedule, and monitor workflows.

Portable file server with accelerated resumable uploads, deduplication, WebDAV, FTP, zeroconf, media indexer, video thumbnails, audio transcoding, and write-only folders, in a single file with no mandatory dependencies.

A privacy-first personal knowledge management software, written in typescript and golang.

Scan, index, and archive all of your paper documents with an improved interface (fork of Paperless).

Easy to use, and extensible RSS feed aggregator capable of generating RSS feeds from pretty much everything ranging from social media to university departments.

Communications platform that puts data protection first (alternative to Gitter.im and Slack).

Enhanced ChatGPT-compatible AI chat interface supporting multiple AI providers, with multi-user auth, message search, and plugin support.

Powerful error tracking platform with wide language support and a robust API.

Payment switch to make payments fast, reliable and affordable. Connect with multiple payment processors and route traffic effortlessly, all with a single API integration.

Developer-first headless CMS and application framework.

Microservice API Gateway and Platform.

One-of-a-kind resume builder that keeps your privacy in mind. Completely secure, customizable and portable.

Web-based operating system designed to be feature-rich, exceptionally fast, and highly extensible.

Remote game stream host for Moonlight with support up to 120 frames per second and 4K resolution.

Low-code framework to build & deploy internal tools with minimal engineering effort (alternative to Retool and Mendix).

Build admin panels, CRUD apps and workflows. Build everything you need, 10x faster.

Extensible wiki for your team.

Free cross-platform bittorrent client with a feature rich Web UI for remote access.

Personal photo management powered by Go and Google TensorFlow. Browse, organize, and share your personal photo collection, using the latest technologies to automatically tag and find pictures.

Product analytics, session recording, feature flagging and a/b testing that you can self-host (alternative to Mixpanel, Amplitude, Heap, HotJar, Optimizely).

Notification infrastructure for developers.

ERP system to help you run your business.

A powerful and easy-to-use website building tool (documentation in Chinese).

AI layer for existing databases that allows you to effortlessly develop, train and deploy state-of-the-art machine learning models using standard queries.

Simple, fast, privacy-focused alternative to Google Analytics.

Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab (alternative to Slack).

An Instant App & API for your SQL Database. Directus wraps your new or existing SQL database with a realtime GraphQL+REST API for developers, and an intuitive admin app for non-technical users.

Cross-platform hierarchical note taking application with focus on building large personal knowledge bases (fork of Trilium Notes).

Internet metasearch engine which aggregates results from various search services and databases (Fork of Searx).

Customer communication platform (alternative to Intercom and Zendesk).

Your AI second brain. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or local LLM into your personal, autonomous AI.

Highly customizable dashboard that puts all your feeds in one place.

User-friendly ads & trackers blocking DNS server.

AI-powered search engine (alternative to Perplexity AI).

Schedule posts, track the performance of your content, and manage all your social media accounts in one place (Alternative to Buffer, Hootsuite, Sprout Social).

Access and share your files, calendars, contacts, mail and more from any device, on your terms.

Headless commerce engine that enables developers to create amazing digital commerce experiences.

Monitor your security cameras with locally processed AI.

Perform all manner of operations within a web browser such as AES, DES and Blowfish encryption and decryption, creating hexdumps, calculating hashes, and much more.

LLM engineering platform for model tracing, prompt management, and application evaluation. Langfuse helps teams collaboratively debug, analyze, and iterate on their LLM applications such as chatbots or AI agents.

SeaweedFS is an open source distributed file system supporting WebDAV, S3 API, FUSE mount, HDFS, etc, optimized for lots of small files, and easy to add capacity.

Stay up-to-date with web-site content changes.

Push notifications to phone or desktop using HTTP PUT/POST, with Android app, CLI and web app, similar to Pushover and Gotify.

Docker container for managing Nginx proxy hosts with a simple, powerful interface.

Visualizer for neural network and machine learning models.

Highly customizable homepage (or startpage / application dashboard) with Docker and service API integrations.

Chat UI that works with any LLM. It comes loaded with advanced features like agents, web search, RAG, MCP, deep research, Connectors to 40+ knowledge sources, and more.

Fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.

HTTP and reverse proxy server, mail proxy server, and generic TCP/UDP proxy server.

Integration platform for AI agents & LLMs with support for 250+ apps and custom tools.

WebRTC application that uses Jitsi Videobridge to provide high quality, scalable video conferences.

Platform for secrets, certificates, and privileged access management.

Bookmark-everything app with a touch of AI for the data hoarders out there.

Cloud native image registry that stores, signs, and scans content.

Event-driven, language-agnostic platform to create, schedule, and monitor workflows. In code. Coordinate data pipelines and tasks such as ETL and ELT.

Local-first personal finance tool based on zero-sum budgeting, supporting synchronization across devices, custom rules, manual transaction importing (from QIF, OFX, and QFX files), and optional automatic synchronization with many banks.

Simple, lightweight (< 1 KB) and privacy-friendly web analytics.

An end-to-end encrypted photo-sharing platform (alternative to Google Photos, Apple Photos).

Factorio-like tower defense game. Build production chains to gather more resources, and build complex facilities.

A simple, high efficiency and real-time video server, supports RTMP, WebRTC, HLS, HTTP-FLV and SRT.

Modern, lightweight and powerful wiki app using Git and Markdown.

Connect and query your data sources, build dashboards to visualize data and share them with your company.

File management and sharing system, supports multiple storage providers.

Create HTML & screenshot archives of sites from your bookmarks, browsing history, RSS feeds, or other sources (alternative to Wayback Machine).

Build and automate internal tools, admin panels, dashboards, CRUD apps, and more, in minutes (alternative to Outsystems, Retool, Mendix, Appian).

Leading Laravel open source e-commerce framework with multi-inventory sources, taxation, localization, dropshipping and more exciting features.

All-in-one project management platform (alternative to Linear, Jira, Slack, Notion, Motion).

Blazing fast, typo-tolerant open source search engine optimized for developer happiness and ease of use.

Feature-rich homepage for your homelab, with easy YAML configuration.

E-book library manager that can view, convert, and catalog e-books in most of the major e-book formats and provides a built-in Web server for remote clients.

Zulip is a powerful, open source group chat application.

Alternative YouTube front-end.

No-code business automation tool like Zapier or Tray. For example, you can send a Slack notification for each new Trello card.

Firefly III is a modern financial manager. It helps you to keep track of your money and make budget forecasts. It supports credit cards, has an advanced rule engine and can import data from many banks.

Open source firmware for ESP devices. Total local control with quick setup and updates. Control using MQTT, Web UI, HTTP or serial. Automate using timers, rules or scripts. Integration with home automation solutions.

Modern Music Server and Streamer, compatible with Subsonic/Airsonic.

CRM solution for SMEs and Enterprises for complete customer lifecycle management.

High performance, self-hosted newsletter and mailing list manager with a modern dashboard.

Browser-based flow editor that helps you wiring hardware devices, APIs and online services to create IoT solutions.

GraphQL native, API-only platform for scalable composable e-commerce storefront.

Web AI firewall utility which protects upstream resources from scraper bots.

Identity-aware tunneled reverse proxy with dashboard UI, access control, and WireGuard-based tunnels (alternative to Cloudflare Tunnel, Tailscale).

Database diagrams editor that allows you to visualize and design your DB with a single query.

Advanced todo list app with integrated timeboxing and time tracking capabilities. Integrates with Jira, GitHub, GitLab, Redmine and OpenProject.

Web application firewall / reverse proxy to protect your web apps from attacks and exploits.

Evaluate, test, and ship LLM applications with a suite of observability tools to calibrate language model outputs across your dev and production lifecycle.

IoT Platform - Device management, data collection, processing and visualization.

Virtual browser that runs in docker and uses WebRTC.

Collaborative wiki and documentation software (alternative to Confluence, Notion).

Web analytics that protects your data and your customers' privacy (alternative to Google Analytics).

World's most-used blogging and CMS engine.

Multimedia/Entertainment center, formerly known as XBMC. Runs on Android, BSD, Linux, macOS, iOS and Windows.

Trello-like kanban.

Real-time web log analyzer and interactive viewer that runs in a terminal.

Certificate authority and access plane for SSH, Kubernetes, web applications, and databases.

Django content management system focused on flexibility and user experience.

Ready-to-use, zero-dependency real-time media server and proxy to publish, read, record, playback and route video/audio streams over SRT, WebRTC, RTSP, RTMP, HLS, MPEG-TS, RTP.

Password manager with a webapp, browser extension, and mobile app.

Bookmark and archive manager to store your useful links.

The most private and secure chat and applications platform - now with double ratchet E2E encryption.

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. Only configuration files, no SQL database.

Automatically track how you spend time on your devices.

Online file converter which supports over a thousand different formats.

Ad-less chess server powering lichess.org, with official iOS and Android client apps.

Create, fill, and sign digital documents (alternative to DocuSign).

Highly customizable online editor providing collaborative editing in real-time.

Browse, read and download eBooks using an existing Calibre database.

Web-based collaborative LaTeX editor.

Apprise allows you to send a notification to almost all of the most popular notification services available to us today such as: Telegram, Discord, Slack, Amazon SNS, Gotify, etc.

Personal assistant who can live on your server.

Personal music streaming server that works.

Machine Translation API.

Automatic TV Shows downloader and manager for Usenet and BitTorrent. It can grab, sort and rename new episodes and automatically upgrade the quality of files already downloaded when a better quality format becomes available.

Remote development machines on your own infrastructure.

Collaborative note taking, wiki and documentation platform that scales.

Complete and fully featured mail server for use by websites & web servers.

Scalable MQTT broker. Connect 100M+ IoT devices in one single cluster, move and process real-time IoT data with 1M msg/s throughput at 1ms latency.

Delightfully simple forums. Flarum is the next-generation forum software that makes online discussion fun again.

Manage your projects, tasks and goals. Collaborate via work packages and link them to your pull requests on Github.

Self-hostable RSS feed aggregator.

Notification server with Android and CLI clients (alternative to PushBullet).

Powerful, privacy-first, client-side PDF toolkit that allows you to manipulate, edit, merge, and process PDF files directly in your browser.

Easy file sharing from the command line.

Music library manager and MusicBrainz tagger (command-line and Web interface).

Spree is a complete, modular & API-driven open source e-commerce solution for Ruby on Rails.

Knowledge-based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user communication, and more.

Turns any Ubuntu server into a fully functional mail server with one command.

Clientless web-based server management platform with SSH terminal, tunneling, and file editing capabilities.

Digital document signing platform (alternative to DocuSign).

WhatsApp API gateway exposing messaging as REST endpoints, with a web dashboard, multi-account sessions, and webhook events (alternative to WhatsApp Business API providers).

Decentralized video streaming platform using P2P (BitTorrent) directly in the web browser.

Web-based environment for interactive and reproducible computing.

File hosting and sharing solution primary for teams and organizations.

All-In-One DevOps Platform. With Git Management, Issue Tracking, and CI/CD. Simple yet Powerful.

Fast, easy, free Bittorrent client.

Forum software built for the modern web.

Proofread more than 20 languages. It finds many errors that a simple spell checker cannot detect.

All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features.

Web GUI for youtube-dl, with playlist support. Allows downloading videos from dozens of websites.

Web file manager that lets you manage your data anywhere it is located: FTP, SFTP, WebDAV, Git, S3, Minio, Dropbox, or Google Drive.

Audiobook and podcast server. It streams all audio formats, keeps and syncs progress across devices. Comes with apps for Android and iOS.

Link aggregator for the fediverse (alternative to Reddit).

Automatically download movies via Usenet and BitTorrent (fork of Sonarr).

Safe database schema change and version control for DevOps teams, supports MySQL, PostgreSQL, TiDB, ClickHouse, and Snowflake.

Customizable and intuitive web-based hotel reservation system and a booking engine.

Habit tracker app which treats your goals like a Role Playing Game.

Distributed, column-oriented, real-time analytics data store.

Business automation tool that lets you connect different services like Twitter, Slack, and more to automate your business processes (alternative to Zapier).

Distributed and RESTful search engine.

Voxel game engine (formerly Minetest). Play one of our many games, mod a game to your liking, make your own game, or play on a multiplayer server.

Distributed social networking server.

Mail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for administration.

Fully-featured Matrix client for Web, iOS & Android.

ROM manager for organizing, enriching, and playing retro games, with support for 400+ platforms.

Material design inspired recipe manager with category and tag management, shopping-lists, meal-planner, and site customizations. Mealie is focused on simple user interactions to keep the whole family using the app.

Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots.

Developer-friendly API to interact with powerful tools like Chromium and LibreOffice for converting numerous document formats (HTML, Markdown, Word, Excel, etc.) into PDF files, and more.

Web and products analytics that is easy to setup and more intuitive (alternative to Google Analytics).

A web-based library organizer and player for your adult media stash, with auto-tagging and metadata scraping support.

Experience Management Suite built on the largest open source survey stack worldwide. Gracefully gather feedback at every step of the customer journey to know what your customers need.

Hassle-Free Way to Self-Host Google Fonts. Get eot, ttf, svg, woff and woff2 files + CSS snippets.

Wallabag, formerly Poche, is a web application allowing you to save articles to read them later with improved readability.

Manage requests for your media library, supports Plex, Jellyfin and Emby media servers (fork of Overseerr).

Flexible, fully featured and highly configurable SFTP server with optional FTP/S and WebDAV support.

Realtime kanban board for workgroups (alternative to Trello).

A beautiful personal server OS for self-hosting. Install on a Raspberry Pi 4 or Ubuntu/Debian.

YOURLS is a set of PHP scripts that will allow you to run Your Own URL Shortener. Features include password protection, URL customization, bookmarklets, statistics, API, plugins, jsonp.

Leading provider of open omnichannel innovation.

All in one IP Toolbox. Easy to check what's your IPs, IP geolocation, check for DNS leaks, examine WebRTC connections, speed test, ping test, MTR test, check website availability and more.

Full-text search and data analytics, with fast response time for small, medium and big data (alternative to Elasticsearch).

Next-generation spreadsheet with relational structure, formula-based access control, and a portable, self-contained format (alternative to Airtable).

Cross-platform e-book/manga/comic/pdf server and web reader with user management, ratings and reviews, and metadata support.

Lean project management system for small teams and startups helping to manage projects from ideation through delivery.

Simple bookmark manager built with Go.

Dead simple static homepage to expose your server services, with an easy yaml configuration and connectivity check.

Decentralized single-user live video streaming and chat server for running your own live streams similar in style to the large mainstream options.

Explore and publish data with easy import and export and database management.

Decentralized app-like microblogging server/SNS for the Fediverse, using the ActivityPub protocol like GNU social and Mastodon.

Minimal bookmark management with a fast and clean UI. Simple installation through Docker and can run on your Raspberry Pi.

Modern URL shortener with support for custom domains and custom URLs.

CMS platform based on the Laravel PHP Framework.

Fast and secure standalone server for resizing and converting remote images.

A personal note tool with AI features.

Next-gen Web Application Firewall (WAF) that will protect your web services.

Language-agnostic real-time messaging (Websocket or SockJS) server.

Fast and scalable open source API Gateway. Out of the box, Tyk offers an API Management Platform with an API Gateway, API Analytics, Developer Portal and API Management Dashboard.

Marketing automation software (email, social and more).

Screego is a simple tool to quickly share your screen to one or multiple people via web browser.

Metering and usage-based billing.

Visualize your location history, track your movements, and analyze your travel patterns with complete privacy and control (alternative to Google Timeline a.k.a. Google Location History).

Instant messaging and VoIP platform built for friends, groups, and communities (alternative to Discord).

WordPress based e-commerce solution.

Conversational app builder (alternative to Typeform and Landbot).

A smart imaging service and enables on-demand cropping, resizing, applying filters and optimizing images.

E-commerce platform with essential commerce features. Modular architecture and fully customizable.

Personal finance application for everyone (fork of Maybe).

Listen for pings and sends alerts when pings are late.

Collection of powerful web-based tools for everyday tasks (coding, manipulating images/videos, PDFs or crunching numbers...).

Powerful tool to invoice clients online.

Accounting software designed for small businesses and freelancers.

Authoritative/recursive DNS server with ad blocking functionality.

CMS and web application platform.

Simple visual task board.

Minimalist news reader.

Homeserver manager. One command setup, one click installs for your favorites self-hosted apps.

ERP beyond your fridge. Groceries & household management solution for your home.

Project management platform focused on simplicity and efficiency.

Wealth management software to keep track of stocks, ETFs and cryptocurrencies.

Git platform powered with easy installation, high extensibility & GitHub API compatibility (alternative to GitHub).

Elegant solution to organise all your web applications.

Management panel for game servers, with an intuitive UI for end users.

Generate RSS/ATOM feeds for websites which don't have one.

Supports real-time sharing of audio, video, slides (with whiteboard controls), chat, and the screen. Instructors can engage remote students with polling, emojis, and breakout rooms.

Fully scalable e-commerce solution.

AI-powered deep research tool with multi-source search (arXiv, PubMed, web), PDF text extraction, and encrypted local storage.

General-purpose, lightweight, minimalist WebRTC Server.

Snappy web interface for controlling consumer 3D printers.

Secure remote access gateway that supports the WireGuard protocol. It offers a Web GUI, 1-line install script, multi-factor auth (MFA), and SSO.

A powerful data logger for Tesla vehicles.

Form builder that allows anyone to create engaging conversational forms for surveys, questionnaires, quizzes, and polls.

Modern time tracking application for freelancers and agencies.

Complete HRMS solution with over 13 different modules right from employee management, onboarding, leaves, to payroll, taxation, and more.

All-in-one solution for saving, synchronizing, viewing, editing and sharing files, calendars, address books and more.

Diagram software for making flowcharts, process diagrams, org charts, UML, ER and network diagrams.

Reusable non-linear personal web notebook.

Lightweight personal subscription tracker with statistics and optional notifications.

Django application to manage, tag and search recipes using either built-in models or external storage providers hosting PDFs, Images or other files.

Minimalist pastebin/discussion board where the server has zero knowledge of hosted data.

Extensible music server. Offers a superset of the mpd API, as well as integration with 3rd party services like Spotify, SoundCloud etc.

Symfony2 powered open source full-stack platform for eCommerce.

Organize, search, and enjoy your YouTube collection. Subscribe, download, and track viewed content with metadata indexing and a user-friendly interface.

A headless commerce framework.

Transport tycoon simulation game.

Open business management platform for collaborative, on-demand and sharing economies (ERP/CRM/HRM/ATS/PM).

Low-latency, high quality voice/text chat software.

Minimalist text adventure game for your browser.

Shopping cart solution.

High performance routing engine designed to run on OpenStreetMap data and offering an HTTP API, C++ library interface, and Nodejs wrapper.

Photo management service with a slight focus on cool graphs (alternative to Google Photos).

Fully transparent SSH, HTTPS, Kubernetes, MySQL and Postgres bastion/PAM that doesn't need additional client-side software.

Collaboration suite built to enable collaboration, synchronizing changes to documents in real time.

Database management in a single PHP file. Available for MySQL, MariaDB, PostgreSQL, SQLite, MS SQL, Oracle, Elasticsearch, MongoDB and others.

Synchronous multiroom audio server.

CLI tool to serve files and dirs over HTTP.

Bitcoin and other cryptocurrencies payment processor.

Modern CRM software package to manage your company or foundation activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...).

Inventory management system which provides intuitive parts management and stock control.

Personal news reader that brings people together to talk about the world. A new sound of an old instrument.

Complete backend that fits into 1 YAML file.

Simple yet full-featured mail server as a set of Docker images.

Inventory and organization system built for the home user.

Realtime collaborative markdown notes on all platforms, formerly known as CodiMD and HackMD CE.

Run your own web server to remotely manage and control computers on a local network or anywhere on the internet.

Extensible Electric Vehicle Charge Controller and home energy management system.

Network intruder and presence detector. Scans for devices connected to your network and alerts you if new and unknown devices are found.

Powerful bookmark manager and a personal textual mini-web.

Browser-based IMAP client with an application-like user interface.

Self Hosted Git repository management, code reviews, issue tracking, activity feeds and wikis.

Open source workspace server and cloud IDE.