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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Cut billing costs with open-source subscription management
Stars
234Last commit
9 months agoLicense
AGPL-3.0
Replace expensive billing solutions with open-source software. Automate subscriptions, accept multiple payments including crypto, and gain real-time revenue insights.
Open Source Alternative to:
GDPR-compliant bot protection without user friction
Stars
199Last commit
8 hours agoLicense
Unknown
Privacy-first CAPTCHA service that blocks bots while keeping forms accessible. No puzzles, no tracking, no cookies - just invisible cryptographic protection.
Open Source Alternative to:
Privacy-first, cookieless analytics without consent banners
Stars
180Last commit
9 hours agoLicense
AGPL-3.0
GDPR-compliant web analytics with real-time insights, session replay, and funnel tracking. No cookies, no tracking, no consent banners required.
Open Source Alternative to:
Generate legal policies directly from TypeScript code
Stars
165Last commit
2 days agoLicense
Apache-2.0
Open-source policy-as-code framework that lets developers create privacy policies, terms of service, and legal agreements using TypeScript with built-in GDPR/CCPA compliance.
Open Source Alternative to:
Scale document creation with automated workflows
Stars
167Last commit
1 month agoLicense
AGPL-3.0
Complete document lifecycle management with automated generation, approval workflows, e-signatures, and branded templates. Create professional documents at scale.
Open Source Alternative to:
Secure open source messaging for professional teams
Stars
173Last commit
10 hours agoLicense
AGPL-3.0
Free Matrix-based messenger with end-to-end encryption, multi-platform bridges, and on-premise deployment. Connect across 30+ networks securely.
Open Source Alternative to:
Effortlessly manage tasks, projects, and teams
Stars
246Last commit
1 year agoLicense
AGPL-3.0
A versatile project management platform that combines task organization, team collaboration, and workflow automation in one intuitive interface.
Open Source Alternative to:
Transcribe meetings and voice notes with local AI, no bots required
Stars
129Last commit
11 days agoLicense
MIT
Free, open-source AI note-taker that transcribes meetings and voice notes locally using Whisper and Parakeet. Works on Mac, Windows, and mobile without invasive bots.
Open Source Alternative to:
Fast, secure, and free personal note-taking app
Stars
179Last commit
3 months agoLicense
Unknown
OpenNotas is a multi-platform, end-to-end encrypted note-taking app that offers simplicity, synchronization, and offline functionality.
Open Source Alternative to:
Self-hosted password manager built for business teams
Stars
104Last commit
20 hours agoLicense
Apache-2.0
Team-focused password manager with client-side encryption, SAML, LDAP, audit logs, and compliance policies. Self-host on your own servers or use as SaaS.
Open Source Alternative to:
Secure, scalable server access management for DevOps
Stars
170Last commit
15 hours agoLicense
BUSL-1.1
Centralized platform for managing SSH access, enhancing security, and streamlining server administration for DevOps teams.
Open Source Alternative to:
Run Claude Code, Codex, Grok, and more from one app
Stars
Stars growing quickly over the last 30 days126Last commit
2 days agoLicense
Apache-2.0
A Mac app that brings multiple AI coding agents into a single window, running on your existing subscriptions with parallel agent sessions, PR management, and a built-in browser.
Open Source Alternative to:
Run a full IaaS, PaaS and SaaS cloud on your own servers
Stars
127Last commit
12 hours agoLicense
Apache-2.0
Cloud platform built on Kubernetes that turns your hardware into VMs, storage, networking and managed services, run from a console or through GitOps.
Open Source Alternative to:
Secure, scalable chat server for modern applications
Stars
161Last commit
1 month agoLicense
GPL-3.0
Open source chat server with end-to-end encryption, clustering support, and comprehensive messaging features for building real-time communication apps
Open Source Alternative to:
Create and manage forms with ease
Stars
185Last commit
1 year agoLicense
Apache-2.0
Formizee is an open-source platform for designing, building, and analyzing forms, offering an affordable all-in-one solution
Open Source Alternative to:
Type-safe feature flags and remote config for developers
Stars
167Last commit
1 year agoLicense
AGPL-3.0
Abby offers open-source, fully typed feature flagging and remote configuration for React and Next.js, with multi-environment testing and debugging tools.
Open Source Alternative to:
Launch your personal website in minutes, no coding required
Stars
226Last commit
6 months agoLicense
AGPL-3.0
Free site builder to create a personal website with articles, projects, email capture, and analytics. Open source, fast, and beautifully designed.
Open Source Alternative to:
Organise, share, and control digital assets at scale
Stars
89Last commit
1 day agoLicense
BSD-3-Clause
Self-hostable DAM platform for managing images, video, documents, and audio with metadata search, approval workflows, and open API integrations.
Open Source Alternative to:
Privacy-first analytics you own completely
Stars
105Last commit
2 days agoLicense
MIT
Self-hosted or managed web analytics with zero external dependencies. Cookie-free tracking, full data sovereignty, and single binary deployment for organizations that own their data.
Open Source Alternative to:
Transform documentation with developer-focused simplicity
Stars
115Last commit
8 days agoLicense
MIT
Create powerful, interactive documentation with hot reloading, TypeScript support, custom components, and built-in API docs generation.
Open Source Alternative to:
Lightweight, accessible product tours built for React developers
Stars
72Last commit
1 month agoLicense
MIT
Headless React tour library with WCAG 2.1 AA accessibility, TypeScript support, and pre-styled components. Under 8KB gzipped with full customization control.
Open Source Alternative to:
Transform long URLs into beautiful, trackable short links
Stars
95Last commit
25 days agoLicense
MIT
Open-source URL shortener with analytics, custom domains, QR codes, and link-in-bio pages. Create branded short links with detailed tracking insights.
Open Source Alternative to:
Live stock quotes, charts, and AI-scored news in your terminal
Stars
90Last commit
6 days agoLicense
MIT
Terminal dashboard for stock quotes, candlestick charts, AI-scored news, SEC Form 4 insider activity, and earnings reads. Free tier, no card required.
Open Source Alternative to:
Privacy-friendly web analytics for data-driven decisions
Stars
136Last commit
9 months agoLicense
AGPL-3.0
Prisme offers customizable, GDPR-compliant web analytics with real-time insights, unlimited data retention, and bot filtering.
Open Source Alternative to:
Capture web pages, text, and images. Find them fast.
Stars
88Last commit
17 days agoLicense
MIT
Private macOS app for saving web pages, text, links, and images locally with full-text search, OCR, and a CLI, no account or cloud required.
Open Source Alternative to:
Self-hosted uptime monitoring that runs on your hardware, not their servers
Stars
85Last commit
9 days agoLicense
MIT
Deploy your own uptime and performance monitoring with HTTP/ICMP checks, multi-region probes, and custom status pages. MIT licensed, runs on minimal hardware.
Open Source Alternative to:
Free, self-hosted personal finance app for long-term planning
Stars
Stars growing over the last 30 days113Last commit
2 days agoLicense
MIT
YAFFA is a powerful, open-source budget app for managing expenses, budgets, and investments with secure self-hosting.
Open Source Alternative to:
End-to-end encrypted location sharing for groups
Stars
78Last commit
15 days agoLicense
AGPL-3.0
Share your real-time location with family and friends using end-to-end encryption, geofence alerts, travel history, and multi-device tracking.
Open Source Alternative to:
Code-first email platform that deploys to your AWS
Stars
66Last commit
13 hours agoLicense
AGPL-3.0
Build email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.
Open Source Alternative to:
Organize and access your bookmarks seamlessly in the cloud
Stars
80Last commit
3 months agoLicense
AGPL-3.0
Cloud-based bookmark manager that lets you save, categorize, and access your web favorites from any device with smart organization features
Open Source Alternative to:
Markdown that mounts real applications
Stars
73Last commit
13 days agoLicense
MIT
Markdown Document with Mounted Applications, the open-source format that turns AI responses into interactive documents. Forms, tables, approval gates and charts render straight from the chat, no custom UI per use case.
Open Source Alternative to:
Self-hosted visual bug reporting with screenshot annotation
Stars
50Last commit
9 hours agoLicense
AGPL-3.0
Embeds a lightweight widget into web apps so users can capture screenshots, annotate issues, and submit reports with console logs and browser metadata included.
Open Source Alternative to:
Securely save and access your favorite links across devices
Stars
107Last commit
7 months agoLicense
MIT
A privacy-focused bookmark manager that encrypts your saved links, allowing you to access them anytime, anywhere, on any device with complete control.
Open Source Alternative to:
Monitors websites and APIs, pages on-call, and publishes a status page
Stars
52Last commit
16 hours agoLicense
AGPL-3.0
Hosted uptime monitoring with multi-region checks, eight monitor types, on-call rotations, escalation policies, and public status pages for SaaS teams and agencies.
Open Source Alternative to:
Build complex automations without code, deploy anywhere with full control
Stars
56Last commit
21 days agoLicense
MIT
Open-source no-code automation platform for logistics, chatbots, and AI agents. Deploy on cloud, self-host, or hybrid with complete data sovereignty and modular workflow design.
Open Source Alternative to:
Turn short shortcuts into your everyday words
Stars
53Last commit
3 days agoLicense
AGPL-3.0
Text expander that replaces typed abbreviations with saved replies, signatures, and snippets across macOS, Windows, and Linux.
Open Source Alternative to:
Self-hostable project management for tasks, events and docs
Stars
71Last commit
3 months agoLicense
AGPL-3.0
Project management app with task lists, calendar, files, docs and full-text search. Self-host it on your own infrastructure with team roles and permissions.
Open Source Alternative to:
Record screen and face, cut pauses, export 4K free
Stars
54Last commit
9 days agoLicense
AGPL-3.0
Mac app that records your screen and camera together, auto-detects pauses for one-click cutting, and exports in 4K with no watermark or account required.
Open Source Alternative to:
Self-hosted sticky notes with better organization
Stars
44Last commit
7 days agoLicense
MIT
A self-hosted, open-source note-taking app that keeps the Google Keep sticky-note feel while adding folders, timelines, list views, and import support.
Open Source Alternative to:
Invisible bot protection that respects user privacy
Stars
37Last commit
4 days agoLicense
MPL-2.0
Privacy-compliant CAPTCHA alternative using proof-of-work technology. Protects websites from bots and spam without user interaction or data tracking.
Open Source Alternative to:
Secure, encrypted forms with advanced features
Stars
49Last commit
4 days agoLicense
AGPL-3.0
Build end-to-end encrypted forms with enterprise-grade features, no coding required. Protect sensitive data and enhance user trust.
Open Source Alternative to:
Streamline investor relations and fundraising management
Stars
61Last commit
8 months agoLicense
AGPL-3.0
Open source platform for managing investor updates, KPIs, fundraising pipeline and data rooms. Keep stakeholders informed and organized.
Open Source Alternative to:
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c15t – Open-source cookie banner, built for control and lightening fast modern web apps.
Highseat
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