Completely free open source software

Browse free and open source software that is completely free to use. Every tool listed here offers a free plan or is free of charge — no cost barriers to get started.

Joplin

Joplin - the secure note taking and to-do app with synchronisation capabilities for Windows, macOS, Linux, Android and iOS.

FreemacOSAndroidiOS

Zeplin

Bring harmony to design delivery. Version control, user flows, design systems, sign-offs, and more. Zeplin unites your product team to accelerate design delivery at scale.

FreemiumWindowsmacOS

Lemon Cleaner

Tencent produced a new Mac cleaning tool official download address: professional deep cleaning, keep Mac fresh and clean; Browser privacy cleaning to avoid sensitive information disclosure; Five deep cleaning gadgets, all-round clean up excess files free up space, help you better understand your Mac.

FreemacOS

Gitea

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

FreemiumWindowsmacOSLinux

Notion

A new tool that blends your everyday work apps into one. It's the all-in-one workspace for you and your team.

FreemiumWindowsmacOS

SafeLine

The Best Free WAF For Webmaster. SafeLine is a simple, lightweight, locally deployable WAF that protects your website from network attacks that including OWASP attacks, zero-day attacks, web crawlers, vulnerability scanning, vulnerability exploit, http flood and so on.

FreemiumWindowsmacOSLinux

Nezha Monitoring

Nezha Monitoring V1 Open-source, lightweight, and easy-to-use server monitoring and operation tool Nezha Monitoring is a lightweight server monitoring and maintenance tool that offers real-time performance monitoring and alert notifications. As an open-source project, it supports enterprise self-hosting to protect data privacy and supports multiple languages. Nezha server monitoring is easy to deploy, supports customizable monitoring projects, and meets various server maintenance needs.

FreeWindowsmacOSLinux

Google Analytics

Google Analytics Solutions offers free tools to help you understand customer behavior, improve marketing ROI, and measure activity with privacy and efficiency.

FreeWindowsmacOSLinuxAndroidiOS

FeiShu Video

FeiShu Video easily share any content, powerful interaction capabilities, intelligent meeting minutes and a multi-end friendly and smooth meeting experience, so that meeting communication more fully, significantly improve organizational cooperation and productivity.

FreemiumWindowsmacOSLinuxAndroidiOS

VirtualBox

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 3.

FreeWindowsmacOSLinux

Playwright

Playwright enables reliable end-to-end testing for modern web apps.

FreeWindowsmacOSLinuxAndroidiOS

Bitwarden

The #1 most trusted password manager. Bitwarden is the best password manager for securely storing, managing, and sharing sensitive online data such as passwords, passkeys, credit cards, and more. As the most trusted password manager, Bitwarden makes it easy for teams and individuals to securely generate, store, and share passwords from any location, browser, or device. Create your free Bitwarden account today.

FreemiumWindowsmacOSLinuxAndroidiOS

Uptime Kuma

Uptime Kuma is an easy-to-use self-hosted monitoring tool. 🥔 Live Demo Try it! Demo Server (Location: Frankfurt - Germany): https://demo.kuma.pet/start-demo It is a temporary live demo, all data will be deleted after 10 minutes. Sponsored by Uptime Kuma Sponsors . ⭐ Features Monitoring uptime for HTTP(s) / TCP / HTTP(s) Keyword / HTTP(s) Json Query / Ping / DNS Record / Push / Steam Game Server / Docker Containers Fancy, Reactive, Fast UI/UX Notifications via Telegram, Discord, Gotify, Slack, Pushover, Email (SMTP), and 90+ notification services, click here for the full list 20-second intervals Multi Languages Multiple status pages Map status pages to specific domains Ping chart Certificate info Proxy support 2FA support 🔧 How to Install 🐳 Docker docker run -d --restart=always -p 3001:3001 -v uptime-kuma:/app/data --name uptime-kuma louislam/uptime-kuma:1 Uptime Kuma is now running on http://0.0.0.0:3001 . Warning File Systems like NFS (Network File System) are NOT supported. Please map to a local directory or volume. Note If you want to limit exposure to localhost (without exposing port for other users or to use a reverse proxy ), you can expose the port like this: docker run -d --restart=always -p 127.0.0.1:3001:3001 -v uptime-kuma:/app/data --name uptime-kuma louislam/uptime-kuma:1 💪🏻 Non-Docker Requirements: Platform ✅ Major Linux distros such as Debian, Ubuntu, CentOS, Fedora and ArchLinux etc. ✅ Windows 10 (x64), Windows Server 2012 R2 (x64) or higher ❌ FreeBSD / OpenBSD / NetBSD ❌ Replit / Heroku Node.js 18 / 20.4 npm 9 Git pm2 - For running Uptime Kuma in the background git clone https://github.com/louislam/uptime-kuma.git cd uptime-kuma npm run setup # Option 1. Try it node server/server.js # (Recommended) Option 2. Run in the background using PM2 # Install PM2 if you don't have it: npm install pm2 -g && pm2 install pm2-logrotate # Start Server pm2 start server/server.js --name uptime-kuma Uptime Kuma is now running on http://localhost:3001 More useful PM2 Commands # If you want to see the current console output pm2 monit # If you want to add it to startup pm2 save && pm2 startup Advanced Installation If you need more options or need to browse via a reverse proxy, please read: https://github.com/louislam/uptime-kuma/wiki/%F0%9F%94%A7-How-to-Install 🆙 How to Update Please read: https://github.com/louislam/uptime-kuma/wiki/%F0%9F%86%99-How-to-Update 🆕 What's Next? I will assign requests/issues to the next milestone. https://github.com/louislam/uptime-kuma/milestones

FreeWindowsmacOSLinux

KeePassDX

Open source Password Manager for Android.

FreeAndroid

GitHub Desktop

Focus on what matters instead of fighting with Git. Whether you're new to Git or a seasoned user, GitHub Desktop simplifies your development workflow.

FreeWindowsmacOS

Node.js Performance Platform

The Node.js Performance Platform is a holistic solution that provides performance monitoring, security alerts, troubleshooting, and performance optimization services for medium - and large-sized Node.js applications. With a deep understanding of the Node.js kernel, we provide a comprehensive tool chain and services to help customers proactively and quickly find and locate online issues.

FreeWindowsmacOSLinux

WPS Office

All-in-one Office Suite for Everyone, Free, Compatible, Shareable.

FreemiumWindowsmacOSLinuxAndroidiOS

1Panel

1Panel is a modern, open source Linux server operations management panel.

FreemiumLinux

Algolia

Enterprises and developers use Algolia’s AI search infrastructure to understand users and show them what they’re looking for.

FreemiumWindowsmacOSLinux

Prometheus

An open-source monitoring system with a dimensional data model, flexible query language, efficient time series database and modern alerting approach.

FreeWindowsmacOSLinux

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AI Agent Development

AI Agent Development is a platform for building, testing, and deploying autonomous AI agents.

Adobe Premiere Pro

Adobe Premiere Pro is a professional video editing software for film, TV, and web.

AdGuard

AdGuard is a cross-platform ad blocker that filters web content and protects privacy.

Ad Blocker

Ad Blocker is a browser tool that removes intrusive ads and pop-ups from web pages.

AI Agent Builder

AI Agent Builder is a platform for creating, deploying, and managing AI agents.

Acorn 7

Acorn 7 is a Mac image editor for editing photos and creating graphics.