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.
Built withDirstarterOpenAlternative is supported by these incredible partners and sponsors. Advertise with us
Scale document creation with automated workflows
Stars
167Last commit
27 days 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
Stars growing over the last 30 days173Last commit
7 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:
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:
Transcribe meetings and voice notes with local AI, no bots required
Stars
126Last commit
4 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:
Secure, scalable chat server for modern applications
Stars
161Last commit
25 days 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:
Run Claude Code, Codex, Grok, and more from one app
Stars
Stars growing quickly over the last 30 days122Last commit
7 hours 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:
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:
Self-hosted password manager built for business teams
Stars
104Last commit
1 day 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
169Last commit
3 months agoLicense
BUSL-1.1
Centralized platform for managing SSH access, enhancing security, and streamlining server administration for DevOps teams.
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
88Last commit
14 hours 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
102Last 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
1 day 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
71Last commit
28 days 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
18 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
88Last commit
3 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
134Last 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:
Free, self-hosted personal finance app for long-term planning
Stars
Stars growing over the last 30 days114Last commit
17 hours agoLicense
MIT
YAFFA is a powerful, open-source budget app for managing expenses, budgets, and investments with secure self-hosting.
Open Source Alternative to:
Capture web pages, text, and images. Find them fast.
Stars
86Last commit
11 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
84Last commit
2 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:
Self-hosted CRM for business development teams
Stars
74Last commit
6 days agoLicense
MIT
Pipeline management, deal workspace, contacts, and two-way Gmail for BD teams. Runs on your own infrastructure, MIT licensed, no per-seat fees.
Open Source Alternative to:
End-to-end encrypted location sharing for groups
Stars
78Last commit
9 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
10 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
79Last 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
72Last commit
7 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:
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:
Self-hosted visual bug reporting with screenshot annotation
Stars
47Last commit
6 days 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:
Monitors websites and APIs, pages on-call, and publishes a status page
Stars
50Last commit
10 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:
Turn short shortcuts into your everyday words
Stars
54Last commit
17 hours 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:
Build complex automations without code, deploy anywhere with full control
Stars
56Last commit
15 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:
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:
Invisible bot protection that respects user privacy
Stars
37Last commit
24 hours 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
5 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:
AI-powered root cause analysis for on-call alerts, self-hosted and air-gapped
Stars
42Last commit
1 month agoLicense
Apache-2.0
Receive alerts from Grafana, Datadog, and Prometheus with AI-generated root cause analysis. Self-hosted on Kubernetes, fully air-gapped capable, Apache 2.0 licensed.
Open Source Alternative to:
Self-hosted sticky notes with better organization
Stars
42Last commit
1 month 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:
Privacy-focused note-taking made simple and fast
Stars
67Last commit
9 months agoLicense
GPL-2.0
Justnote is a secure note-taking app that lets you easily create and sync notes across devices while maintaining full control of your data.
Open Source Alternative to:
Turn user feedback into features that matter
Stars
39Last commit
4 days agoLicense
SSPL-1.0
Collect feedback, prioritize with AI-powered voting, and share transparent roadmaps. Build products users love with automated triage and seamless integration.
Open Source Alternative to:
Event ticketing with no per-ticket platform fees
Stars
36Last commit
10 hours agoLicense
AGPL-3.0
Sell tickets for £50/year with payments, QR check-in, refunds, reporting, and a hosted booking site. Self-hostable under AGPL-3.0.
Open Source Alternative to:
Privacy-first newsletter platform without tracking
Stars
34Last commit
4 days agoLicense
AGPL-3.0
Create and send newsletters with complete privacy protection. No tracking, no data collection - just simple, clean email delivery with customizable templates and archive sites.
Open Source Alternative to:
People are looking for alternatives to...
View all alternatives
Spotify
Access millions of songs, podcasts, and playlists instantly with personalized recommendations and offline listening across all your devices.
2 alternatives
Claude Code
An agentic coding tool that runs in your terminal, reads your codebase, and executes tasks like writing features, fixing bugs, and running tests.
18 alternatives
Claude
A next generation AI assistant built for work and trained to be safe, accurate, and secure.
12 alternatives
CapCut
Free video editing app that lets you create professional-quality videos with advanced editing tools, effects, and templates for social media and beyond.
5 alternatives
Notion
An all-in-one workspace for note-taking, project management, knowledge sharing, and collaboration across teams.
22 alternatives
Lovable
Create fully functional applications by describing your idea, with AI-powered code generation and beautiful design
3 alternatives
Trending categories
View all categoriesSEO Tools
Tools that analyze website performance, optimize content visibility, track rankings, and improve search engine results.
AI 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.
Social Media Management Tools
Tools for scheduling and managing posts on social media networks.
Voice Dictation Tools
Applications that convert spoken words into text for faster writing across any application.
Scraping Platforms & SDKs
Platforms and SDKs for building web scraping solutions.
CRM Systems
Customer relationship management systems for tracking contacts, deals, and pipelines, with activity history and sales reporting.
Openlane – Open-source, developer-first platform for automated compliance, risk management, and built-in Trust Center.
Stellar Hosted
Sent
InfluxDB