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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Create, edit and share documents with real-time collaboration
Stars
16,780Last commit
1 day agoLicense
MIT
Transform document collaboration with real-time editing, version control, and secure sharing features that enhance team productivity and communication.
Open Source Alternative to:
Secure, open-source document signing for everyone
Stars
14,897Last commit
21 hours agoLicense
AGPL-3.0
Streamline your document workflows with a powerful, privacy-focused e-signature platform that puts you in control of your data.
Open Source Alternative to:
Open-source workflow automation for developers
Stars
17,781Last commit
19 hours agoLicense
Unknown
Powerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.
Open Source Alternative to:
Secure password management for individuals and businesses
Stars
20,014Last commit
1 day agoLicense
Unknown
Bitwarden is an open source password manager that securely stores, shares, and autofills passwords across unlimited devices.
Open Source Alternative to:
Open-source mail server with unlimited sending & AI tools
Stars
15,529Last commit
3 months agoLicense
AGPL-3.0
Self-hosted email marketing platform with unlimited sending, AI-powered email creation, real-time analytics, and no monthly fees. Complete SMTP solution.
Open Source Alternative to:
Run long-running AI tasks without timeouts or servers
Stars
16,215Last commit
21 hours agoLicense
Apache-2.0
Open source TypeScript platform for building and deploying AI agents and background workflows with retries, queues, observability, and elastic scaling.
Open Source Alternative to:
High-performance API gateway with built-in LLM support
Stars
17,084Last commit
2 days agoLicense
Apache-2.0
Apache APISIX is an open-source API gateway built on NGINX and etcd, offering dynamic routing, 100+ plugins, load balancing, authentication, and traffic management for APIs and LLM workloads.
Open Source Alternative to:
SQLite-compatible database for scalable multi-tenant applications
Stars
17,190Last commit
10 days agoLicense
MIT
Turso provides a simple developer experience with SQLite compatibility, allowing you to build and scale multi-tenant applications with unlimited databases.
Open Source Alternative to:
Ad-free music player that streams from multiple sources
Stars
18,393Last commit
2 days agoLicense
AGPL-3.0
Open-source desktop music player for Windows, macOS, and Linux. Search artists and tracks across multiple sources, build playlists, and listen without ads or tracking.
Open Source Alternative to:
High-performance time series database for metrics and logs
Stars
17,659Last commit
1 day agoLicense
Apache-2.0
Time series database and monitoring platform compatible with Prometheus, handling billions of metrics with lower resource usage than most alternatives.
Open Source Alternative to:
Open-source API documentation and testing platform
Stars
16,060Last commit
1 day agoLicense
MIT
Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.
Open Source Alternative to:
Professional audio editing made simple and free
Stars
18,218Last commit
2 days agoLicense
Unknown
Free, open-source audio editor and recorder for all platforms. Record, edit, mix and enhance audio with professional tools. Perfect for music, podcasts, and more.
Open Source Alternative to:
Open-source Q&A platform for knowledge sharing
Stars
15,665Last commit
9 days agoLicense
Apache-2.0
A versatile, community-driven Q&A platform that fosters collaboration and knowledge exchange within organizations and communities.
Open Source Alternative to:
Free offline machine translation API you can host yourself
Stars
16,295Last commit
2 days agoLicense
AGPL-3.0
Self-hosted machine translation API that works offline. Download, setup, and run your own translation server in minutes with complete privacy control.
Open Source Alternative to:
Open source headless commerce with REST API, no platform fees, built for B2B and marketplaces
Stars
15,667Last commit
20 hours agoLicense
BSD-3-Clause
Headless eCommerce platform with REST API, TypeScript SDK, and Next.js storefront. Handle B2B, multi-vendor marketplaces, and cross-border commerce. Self-hosted, open source, zero fees.
Open Source Alternative to:
Your open-source personal assistant for server automation
Stars
17,487Last commit
2 days agoLicense
MIT
Leon is an AI-powered virtual assistant that lives on your server, automating tasks and managing your digital life with privacy and customization.
Open Source Alternative to:
Fast grammar checking that respects your privacy
Stars
14,969Last commit
1 day agoLicense
Apache-2.0
Open source grammar checker that analyzes your writing quickly while keeping your data completely private and secure on your device.
Open Source Alternative to:
Open-source ecommerce platform for WordPress
Stars
10,490Last commit
20 hours agoLicense
GPL-2.0
Build and manage online stores with customizable features, extensions, and themes for businesses of all sizes.
Open Source Alternative to:
Streamline your business finances and operations
Stars
14,952Last commit
3 months agoLicense
AGPL-3.0
All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.
Open Source Alternative to:
Track time automatically with privacy-first design
Stars
18,812Last commit
2 days agoLicense
MPL-2.0
Free open-source time tracker that automatically monitors your device usage. Cross-platform support with local data storage for complete privacy.
Open Source Alternative to:
Understand your audience with privacy-first analytics.
Stars
12,929Last commit
2 days agoLicense
AGPL-3.0
Get next-gen, open-source, and cookieless web analytics. Understand user behavior with session replays, real-time data, and web vitals. GDPR/CCPA compliant.
Open Source Alternative to:
Privacy-first survey and experience management platform
Stars
12,890Last commit
1 day agoLicense
AGPL-3.0
Collect feedback across websites, apps, and emails with targeted surveys, user segmentation, and GDPR-compliant data handling. Self-host or use the cloud.
Open Source Alternative to:
Classic, agile, or hybrid project management, self-hosted
Stars
16,028Last commit
1 day agoLicense
GPL-3.0
Full-featured project management platform with Gantt charts, agile boards, time tracking, and team collaboration. Self-host or use managed cloud hosting.
Open Source Alternative to:
Secure, customizable identity infrastructure for developers
Stars
14,946Last commit
1 day agoLicense
AGPL-3.0
ZITADEL provides a comprehensive identity management solution with easy APIs, customizable workflows, and serverless deployment options.
Open Source Alternative to:
Secure, seamless authentication for modern applications
Stars
14,499Last commit
1 day agoLicense
MPL-2.0
An open-source identity solution offering customizable login experiences, multi-tenant support, and comprehensive user management.
Open Source Alternative to:
Privacy-first offline maps for hiking, cycling & navigation
Stars
15,312Last commit
1 day agoLicense
Apache-2.0
Free, open-source offline maps app with detailed trails, turn-by-turn navigation, and zero tracking. Perfect for hikers, cyclists, and travelers seeking privacy.
Open Source Alternative to:
Fast, secure cloud development environments on your infrastructure
Stars
14,372Last commit
23 hours agoLicense
AGPL-3.0
Self-hosted development platform that enables secure, scalable remote coding with automated provisioning, reduced cloud costs, and enterprise-grade security.
Open Source Alternative to:
High-performance time-series database for massive data scale
Stars
17,302Last commit
23 hours agoLicense
Apache-2.0
Open-source time-series database offering massive ingestion throughput, millisecond queries, and SQL extensions, designed for optimal performance at any hardware scale.
Open Source Alternative to:
Open-source search and analytics at enterprise scale
Stars
13,661Last commit
22 hours agoLicense
Apache-2.0
Community-driven, Apache 2.0-licensed search and analytics suite for ingesting, searching, visualizing, and analyzing data at scale with AI/ML capabilities.
Open Source Alternative to:
Advanced terminal with modern features for Mac developers
Stars
18,013Last commit
1 day agoLicense
GPL-2.0
Feature-rich terminal replacement for macOS with split panes, search, autocomplete, and extensive customization options for enhanced productivity.
Open Source Alternative to:
AI-native vector database for intuitive applications
Stars
16,785Last commit
21 hours agoLicense
BSD-3-Clause
Open-source vector database designed for building powerful, production-ready AI applications with hybrid search capabilities and flexible deployment options.
Open Source Alternative to:
On-device voice dictation for macOS with adaptive AI
Stars
11,256Last commit
1 day agoLicense
GPL-3.0
Free, open-source macOS dictation app that transcribes speech locally, polishes output with an on-device AI model, and adapts tone to whichever app you're typing into.
Open Source Alternative to:
Zero Trust VPN solutions for secure business networking
Stars
14,498Last commit
2 days agoLicense
Unknown
Secure remote access VPN solutions with zero trust network access. Self-hosted and cloud-managed options for businesses of all sizes. Trusted by 20,000+ organizations.
Open Source Alternative to:
Secure cloud environments for enterprise AI agents
Stars
13,677Last commit
1 day agoLicense
Apache-2.0
Provide AI agents with secure, isolated sandboxes featuring real-world tools, code execution, and enterprise-grade security. Trusted by 88% of Fortune 100 companies.
Open Source Alternative to:
Modern forum software for vibrant online communities
Stars
16,390Last commit
9 days agoLicense
MIT
Lightweight, extensible forum platform with a sleek interface, powerful moderation tools, and seamless integration capabilities.
Open Source Alternative to:
Remove Mac apps and all their leftover files
Stars
14,537Last commit
3 months agoLicense
Unknown
Mac app uninstaller that finds and removes associated files, orphaned leftovers, and development artifacts across macOS 13 and later.
Open Source Alternative to:
Secure, customizable authentication for your applications
Stars
15,294Last commit
2 days agoLicense
Unknown
Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.
Open Source Alternative to:
Build powerful AI agents with cutting-edge LLM technology
Stars
14,892Last commit
1 day agoLicense
MIT
A comprehensive platform for creating AI agents with intuitive tools, extensive integrations, and enterprise-grade features powered by the latest language models.
Open Source Alternative to:
Minimalistic AI-powered search engine for instant answers
Stars
11,857Last commit
24 days agoLicense
AGPL-3.0
Scira delivers concise, AI-generated responses to queries using a clean interface and powerful search capabilities.
Open Source Alternative to:
AI email assistant that automates, organizes, and declutters
Stars
12,154Last commit
1 day agoLicense
AGPL-3.0
Automates Gmail and Outlook with AI-drafted replies, bulk unsubscribe, cold email blocking, attachment filing, and inbox analytics for individuals and teams.
Open Source Alternative to:
Zero-knowledge encrypted notes that sync across all devices
Stars
14,499Last commit
2 days agoLicense
GPL-3.0
End-to-end encrypted note-taking app with zero-knowledge architecture, cross-device sync, web clipper, and a self-hostable sync server.
Open Source Alternative to:
Secure and streamline database changes with CI/CD automation
Stars
14,465Last commit
19 hours agoLicense
MIT
Comprehensive platform for database schema migrations, security controls, and data masking with built-in review workflows and GitOps integration.
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Openlane – Open-source, developer-first platform for automated compliance, risk management, and built-in Trust Center.
Openlane
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