Open Source Alternatives to Popular Software
Over 1 million users replaced their proprietary tools with open source software. Discover the best alternatives and join the movement.
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Transform team email into efficient collaborative workflows
Stars
1,759Last commit
7 months agoLicense
AGPL-3.0
Streamline team communication with shared inboxes, unlimited email addresses, and customizable workflows. Perfect for modern businesses seeking organized email management.
Open Source Alternative to:
Transform your source code into stunning visuals
Stars
1,846Last commit
8 months agoLicense
MIT
Create beautiful, customizable images of your source code with ease, perfect for presentations, documentation, and social media sharing.
Unify APIs, databases, and services effortlessly
Stars
1,263Last commit
18 hours agoLicense
Apache-2.0
A powerful backend framework that simplifies API integration, enhances security, and boosts developer productivity for modern web applications.
Open Source Alternative to:
Powerful open-source business intelligence for data-driven decisions
Stars
1,011Last commit
23 hours agoLicense
AGPL-3.0
Connect multiple data sources, build complex queries, create insightful visualizations, and organize powerful dashboards to make informed business decisions.
Open Source Alternative to:
Handcrafted minimal bookmark manager with advanced tagging system
Stars
1,290Last commit
1 month agoLicense
MIT
A private, open-source bookmark manager for power users and large libraries, with a powerful, clutter-free UI.
Open Source Alternative to:
Open-source webhooks for seamless integrations
Stars
1,484Last commit
22 hours agoLicense
SSPL-1.0
Self-hosted webhook solution for effortless event-driven communication between applications, enhancing system interoperability and automation.
Open Source Alternative to:
Local-first notes app with no cloud, no AI, no tracking
Stars
1,339Last commit
4 days agoLicense
MIT
A privacy-focused, offline-first note-taking app that stores everything on your device, with Markdown, note linking, file attachments, LaTeX math, and bring-your-own sync.
Open Source Alternative to:
Open-source testing agent for UI, API, security, accessibility & visual QA
Stars
1,149Last commit
1 month agoLicense
AGPL-3.0
Hercules is the first open-source testing agent, enabling zero-code, zero-maintenance UI, API, security, accessibility, and visual validations.
Open Source Alternative to:
Self-hosted SERP API for Google, Bing, Yandex, and more
Stars
1,355Last commit
2 months agoLicense
MIT
Query Google, Bing, Yandex, Baidu, DuckDuckGo, and Ecosia through one REST API. Self-host free under MIT, or use the managed cloud option.
Open Source Alternative to:
Firefox fork hardened for privacy, security, and freedom
Stars
1,315Last commit
20 hours agoLicense
Unknown
A Firefox-based browser that strips telemetry, blocks trackers, disables DRM, and ships with a content blocker out of the box.
Open Source Alternative to:
Clean, distraction-free note-taking with local storage
Stars
1,170Last commit
2 days agoLicense
AGPL-3.0
Minimal note-taking app storing Markdown notes in local SQLite database. Features instant search, flexible tagging, keyboard shortcuts, and offline access.
Open Source Alternative to:
AI agent workflows built natively into GitHub
Stars
1,148Last commit
20 hours agoLicense
MIT
An open-source GitHub bot that runs AI agents to review PRs, triage issues, fix CI failures, and ship code using any LLM provider.
Open Source Alternative to:
AI-powered automation that lives in your Slack workspace
Stars
1,093Last commit
4 months agoLicense
Apache-2.0
Connect all your apps through Pearl, an AI assistant that automates workflows directly in Slack. No coding required - save 10+ hours weekly with intelligent task automation.
Open Source Alternative to:
Flexible billing infrastructure for modern SaaS
Stars
1,228Last commit
8 days agoLicense
AGPL-3.0
Open-source pricing and billing platform that helps SaaS companies launch, test, and scale complex billing models with ease. Features metering, invoicing, and real-time data.
Open Source Alternative to:
Self-hosted uptime monitoring you own and control
Stars
1,188Last commit
4 months agoLicense
MIT
Open-source uptime monitoring solution with real-time alerts, status pages, and comprehensive checks for websites, APIs, databases, and services.
Open Source Alternative to:
Track TV shows and movies, synced with Trakt.tv
Stars
1,459Last commit
3 months agoLicense
GPL-3.0
Android and iOS app for tracking TV shows and movies, managing watchlists, and syncing viewing history with Trakt.tv across devices.
Open Source Alternative to:
Create, sell, and manage online courses with ease
Stars
1,263Last commit
2 months agoLicense
AGPL-3.0
An open-source platform for building and selling online courses, featuring customizable themes, integrated payments, and user management.
Open Source Alternative to:
Lightning-fast React data grid for enterprise scale
Stars
1,023Last commit
24 days agoLicense
Unknown
High-performance React data table with server-side loading, tree data, pivoting, and advanced features. Handles billions of rows with minimal bundle size.
Open-source feedback management for product teams
Stars
1,124Last commit
22 hours agoLicense
Apache-2.0
Collect, organize, and prioritize user feedback to build better products. Self-hosted solution for seamless feature request management.
Open Source Alternative to:
Own your SES email analytics, from send to inbox
Stars
923Last commit
7 days agoLicense
Unknown
Track SES deliveries, bounces, opens and clicks in a self-hosted dashboard with real-time search, analytics and reputation monitoring.
Open Source Alternative to:
Cookieless, privacy-first web analytics without the complexity
Stars
1,192Last commit
16 hours agoLicense
AGPL-3.0
Privacy-first web analytics with real-time dashboards, session replays, error tracking, A/B testing, and GDPR compliance out of the box. No cookies, no consent banners.
Open Source Alternative to:
Your secure French personal cloud for complete data control
Stars
1,270Last commit
18 hours agoLicense
AGPL-3.0
Open-source personal cloud that automatically gathers all your data from third-party services. French-hosted with privacy-first design, no ads, and seamless device sync.
Open Source Alternative to:
Fast, secure browsing with powerful organization features
Stars
1,072Last commit
3 months agoLicense
GPL-3.0
A modern browser combining minimalist design with smart features like profiles, spaces, and command palette. Full Chrome extension support and privacy-focused browsing.
Open Source Alternative to:
Open source CMS with powerful drag-and-drop builder
Stars
1,182Last commit
1 month agoLicense
AGPL-3.0
Vvveb is a feature-rich open source CMS for building websites, blogs, and ecommerce stores with an intuitive drag-and-drop interface.
Open Source Alternative to:
Flexible CMS for developers, powerful for clients
Stars
1,149Last commit
23 hours agoLicense
Unknown
A versatile, open-source content management system with a powerful API, modular architecture, and intuitive interface for seamless web development.
Open Source Alternative to:
Fast, local-first Git GUI built in Rust
Stars
814Last commit
1 day agoLicense
AGPL-3.0
Open source Git GUI for Linux, macOS, and Windows, built in Rust for speed on large repositories with full diff, merge, and history tooling.
Open Source Alternative to:
Save, organize and revisit web content effortlessly
Stars
1,103Last commit
23 hours agoLicense
Unknown
Personal content hub for saving articles, videos, and images. Features highlighting, transcripts, e-book export, and smart organization tools.
Open Source Alternative to:
Build AI agents and automate complex workflows seamlessly
Stars
1,000Last commit
8 hours agoLicense
Apache-2.0
Create intelligent automation workflows combining AI agents with your favorite apps and services. Connect, automate, and scale your operations without complex coding.
Open Source Alternative to:
Agile project management for cross-functional teams
Stars
849Last commit
1 day agoLicense
MPL-2.0
Self-hostable agile project management tool with Kanban and Scrum boards, sprint planning, issue tracking, and reporting for teams of any size.
Open Source Alternative to:
Open-source email API with enterprise deliverability
Stars
888Last commit
13 days agoLicense
AGPL-3.0
Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
Open Source Alternative to:
Transform your time tracking into actionable insights
Stars
894Last commit
3 months agoLicense
GPL-3.0
Advanced time tracking and productivity analytics tool that captures detailed work patterns, generates comprehensive reports, and helps optimize workflow efficiency.
Open Source Alternative to:
Your personal workspace organizer for maximum productivity
Stars
1,022Last commit
3 months agoLicense
GPL-3.0
Organize projects, tasks, and resources in customizable workspaces. Boost productivity with a unified interface for all your work.
Open Source Alternative to:
One self-hosted binary replaces Vercel, Sentry, and analytics tools
Stars
727Last commit
7 hours agoLicense
Apache-2.0
Self-hosted platform for small dev teams combining deployments, error tracking, analytics, session replay, uptime monitoring, and managed databases in one dashboard.
Open Source Alternative to:
Self-hosted encrypted backups with 70+ cloud storage options
Stars
764Last commit
9 days agoLicense
Apache-2.0
Free, open-source backup solution with end-to-end encryption. Self-hosted control, supports 70+ cloud providers, automated incremental backups, and zero vendor lock-in.
Open Source Alternative to:
Privacy-focused translation with offline capabilities
Stars
1,060Last commit
4 days agoLicense
BSD-3-Clause
Full-featured browser extension for translating web pages, text, and subtitles with offline mode, personal dictionary, and custom translator support.
Open Source Alternative to:
Secure secret management with public key encryption
Stars
767Last commit
5 months agoLicense
MPL-2.0
Secure secret management platform with public key encryption, automated rotation, versioning, and real-time collaboration tools for development teams.
Open Source Alternative to:
Secure, deploy, and manage application secrets effortlessly
Stars
915Last commit
1 day agoLicense
MIT
Open source platform for engineering teams to manage secrets and environment variables from development to production, with powerful integrations.
Open Source Alternative to:
Schedule posts to every major social network, self-hosted
Stars
597Last commit
12 hours agoLicense
AGPL-3.0
Plan, schedule, and auto-publish social media content across 10+ networks with a visual calendar, AI captions, team approvals, and self-hosting support.
Open Source Alternative to:
Self-hosted email infrastructure for developers
Stars
1,250Last commit
2 years agoLicense
AGPL-3.0
00 is an open-source email API and infrastructure solution that allows developers to own and control their email stack.
Open Source Alternative to:
A delightfully rich and dynamic link-in-bio.
Stars
795Last commit
19 hours agoLicense
MIT
Build a dynamic link-in-bio page with a drag-and-drop editor. Integrate platforms to showcase live content and connect with your audience.
Open Source Alternative to:
Secure open source file storage with end-to-end encryption
Stars
981Last commit
7 hours agoLicense
AGPL-3.0
Open source encrypted data storage solution offering secure file sharing, collaboration tools, and on-premises deployment for professional teams.
Open Source Alternative to:
Offline voice dictation that types into any app
Stars
710Last commit
2 days agoLicense
AGPL-3.0
Dictate into any app on Mac or Windows using on-device AI models. One-time purchase, 99+ languages, no subscription required.
Open Source Alternative to:
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Trending categories
View all categoriesAI Coding Agent Orchestrators
Tools that run and coordinate multiple AI coding agents in parallel across isolated git worktrees, also known as agent harnesses or agentic dev environments.
Voice Dictation Tools
Applications that convert spoken words into text for faster writing across any application.
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Platforms and SDKs for building web scraping solutions.
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Docmost – Open-source wiki software with real-time collaboration, diagrams, AI, SSO, RBAC permissions and more.
Docmost
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Stellar Hosted