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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Secure and streamline database changes with CI/CD automation
Stars
14,469Last commit
7 hours agoLicense
MIT
Comprehensive platform for database schema migrations, security controls, and data masking with built-in review workflows and GitOps integration.
Centralize, transform, and stash your data
Stars
14,936Last commit
1 day agoLicense
Unknown
Logstash is a free and open server-side data processing pipeline that ingests data from multiple sources, transforms it, and sends it to your desired destination.
Open Source Alternative to:
Real-time analytics database for sub-second OLAP queries
Stars
14,050Last commit
8 hours agoLicense
Apache-2.0
Columnar, time-indexed analytics database built for streaming and batch data at scale, handling billions to trillions of rows with millisecond query response times.
Open Source Alternative to:
Decentralized video platform for true digital freedom
Stars
15,320Last commit
11 days agoLicense
AGPL-3.0
Create your own video hosting platform with PeerTube - a free, open-source alternative to YouTube. Join 600,000+ videos across 1,000+ interconnected platforms without ads or tracking.
Open Source Alternative to:
Ultra-fast data transformation for AI with lineage
Stars
11,501Last commit
9 hours agoLicense
Apache-2.0
Open-source ETL framework built in Rust for AI workloads. Features incremental processing, data lineage, and observability tools for semantic search and RAG applications.
Open Source Alternative to:
Build full-stack apps with TypeScript and real-time sync
Stars
12,502Last commit
3 days agoLicense
Unknown
Open-source reactive database that keeps your web and mobile apps in sync. Write everything in TypeScript with built-in auth, cron jobs, and AI integration.
Open Source Alternative to:
Common layer for composing and governing AI agents
Stars
9,772Last commit
7 hours agoLicense
Apache-2.0
Meta-harness that sits above Claude Code, Codex, and other AI agents to add policy enforcement, sandboxing, and real-time collaborative sessions.
Open Source Alternative to:
Build beautiful documentation sites with Next.js
Stars
13,095Last commit
8 hours agoLicense
MIT
A flexible Next.js framework for creating stunning documentation sites with MDX support, built-in search, and customizable components.
Open Source Alternative to:
Unify, automate, and elevate your monitoring workflow
Stars
12,292Last commit
1 day agoLicense
MIT
Open-source platform for centralizing alerts, automating responses, and enhancing incident management across your tech stack.
Open Source Alternative to:
Professional status page system for transparent downtime communication
Stars
15,238Last commit
1 day agoLicense
Unknown
Open-source status page platform that helps organizations communicate system status and incidents effectively with customizable components and metrics tracking
Open Source Alternative to:
Create powerful chatbots without coding
Stars
10,314Last commit
21 hours agoLicense
Unknown
Design, build, and deploy interactive chatbots with a visual editor. Integrate easily and collect data effortlessly.
Open Source Alternative to:
Free, open-source framework for cross-platform game development
Stars
14,402Last commit
3 days agoLicense
Unknown
Build games in C# that run on Windows, macOS, Linux, iOS, Android, and major consoles. No royalties, no subscriptions, no runtime fees.
Open Source Alternative to:
Open source messaging with privacy and community focus
Stars
10,230Last commit
1 day agoLicense
AGPL-3.0
Free, open-source instant messaging and VoIP platform with full Markdown support, voice/video calls, moderation tools, and self-hosting options for communities.
Open Source Alternative to:
Complete production stack for AI teams
Stars
12,930Last commit
4 months agoLicense
MIT
Comprehensive AI platform with gateway, observability, guardrails, and prompt management. Access 1,600+ LLMs via unified API with enterprise-grade security.
Open Source Alternative to:
Build your own federated discussion community
Stars
14,586Last commit
21 days agoLicense
AGPL-3.0
Open-source forum and link aggregator that connects communities across the fediverse. Self-hosted, ad-free, with powerful moderation tools and federation.
Open Source Alternative to:
Your all-in-one marketplace for digital creators and products
Stars
9,670Last commit
7 hours agoLicense
MIT
A digital marketplace platform where creators can sell digital products, from courses to software, with built-in payment processing and content delivery.
Open Source Alternative to:
AI-Powered Note Taking App
Stars
10,996Last commit
12 days agoLicense
GPL-3.0
The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.
Open Source Alternative to:
Self-hosted file sync with AI-powered organization
Stars
15,222Last commit
11 days agoLicense
Unknown
Open source file sync and sharing platform with custom properties, AI automation, collaborative editing, and enterprise-grade security for teams.
Open Source Alternative to:
Unified file management for your enterprise storage
Stars
14,633Last commit
8 hours agoLicense
AGPL-3.0
Filestash is an open-source file manager that integrates with multiple storage backends, authentication systems, and offers customization options.
Open Source Alternative to:
A free, open source, cross-platform video editor
Stars
15,104Last commit
20 hours agoLicense
GPL-3.0
Free, open-source video editor supporting 4K resolution, hundreds of formats, and professional features like Blackmagic Design integration across Windows, Mac, and Linux.
Open Source Alternative to:
AI-powered grammar checker for 30+ languages
Stars
14,993Last commit
23 hours agoLicense
LGPL-2.1
Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.
Open Source Alternative to:
Simple, speedy, and secure link shortener with analytics
Stars
7,096Last commit
19 days agoLicense
AGPL-3.0
A serverless link shortener that runs entirely on Cloudflare, offering URL compression, analytics, and customizable slugs.
Open Source Alternative to:
Visual editing for your Git-based content
Stars
13,783Last commit
8 hours agoLicense
Apache-2.0
A headless CMS that simplifies content management with real-time editing, Git-based workflows, and developer-friendly customization.
Open Source Alternative to:
Collect, organize, cite, and share research in one place
Stars
15,187Last commit
4 days agoLicense
Unknown
Reference manager that captures sources from the web, organizes them with tags and collections, and generates citations in 9,000+ styles for Word, LibreOffice, and Google Docs.
Open Source Alternative to:
Beautiful open-source monitoring for modern infrastructure
Stars
10,798Last commit
1 day agoLicense
AGPL-3.0
Monitor servers, websites, Docker containers, and infrastructure with real-time insights, instant alerts, and powerful analytics. Self-hosted solution.
Open Source Alternative to:
Secure, decentralized messaging for teams and individuals
Stars
13,441Last commit
22 hours agoLicense
AGPL-3.0
Open-source platform for encrypted communication, file sharing, and collaboration based on the Matrix protocol.
Open Source Alternative to:
Self-hosted session replay with complete data control
Stars
12,787Last commit
23 hours agoLicense
AGPL-3.0
Open-source session replay and product analytics platform you can self-host for complete control over data security, privacy, and compliance.
Open Source Alternative to:
Open-source LLM tracing & evaluation for AI optimization
Stars
11,370Last commit
12 hours agoLicense
Elastic-2.0
Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.
Open Source Alternative to:
A certified and battle-tested identity solution
Stars
13,870Last commit
1 month agoLicense
Apache-2.0
Ory is a certified and battle-tested identity solution backed by a large open source community and trusted by Fortune 500 companies.
Open Source Alternative to:
AI-powered answer engine with dynamic interface generation
Stars
9,094Last commit
13 hours agoLicense
Apache-2.0
Open-source answer engine that dynamically generates UI components while providing AI-powered responses, combining conversational AI with interactive interfaces.
Open Source Alternative to:
Self-hosted Kanban board with real-time collaboration
Stars
12,520Last commit
6 days agoLicense
Unknown
Self-hosted Kanban board for agile teams. Unlimited boards, real-time sync, GDPR-compliant, and available as a free Community Edition or paid Pro.
Open Source Alternative to:
Accelerate backend development with effortless scalability
Stars
12,347Last commit
20 hours agoLicense
MPL-2.0
A powerful platform for building cloud backends, automating infrastructure, and simplifying development workflows for faster, more efficient coding.
Open Source Alternative to:
Effortless screen recording for macOS
Stars
19,352Last commit
2 years agoLicense
MIT
Capture, edit, and share your screen with ease. Create stunning GIFs and videos for tutorials, demos, and bug reports.
Open Source Alternative to:
Open-source integration platform for seamless workflows
Stars
13,965Last commit
7 months agoLicense
Unknown
Self-hosted automation tool that connects your apps and services, enabling powerful integrations and efficient data flow across your ecosystem.
Open Source Alternative to:
Feature flags for rapid, risk-free software deployment
Stars
13,789Last commit
8 hours agoLicense
AGPL-3.0
A powerful feature management platform enabling gradual rollouts, A/B testing, and seamless integration for continuous delivery.
Open Source Alternative to:
Private meeting notes, no bots, files you own
Stars
9,259Last commit
7 hours agoLicense
MIT
Records system audio without joining your call, then turns rough notes into editable summaries. Audio, transcripts, and notes stay as local files.
Open Source Alternative to:
Build product integrations with 500+ APIs in hours
Stars
11,767Last commit
7 hours agoLicense
Elastic-2.0
Complete integrations platform with 500+ pre-built APIs, code-first approach, unified data models, and enterprise-grade security. Free tier available.
Open Source Alternative to:
AI-powered PIM for managing product catalogs at scale
Stars
10,956Last commit
2 days agoLicense
MIT
Open source Product Information Management system with an AI agent for catalog enrichment, bulk updates, multilingual content, and omnichannel distribution.
Open Source Alternative to:
Flexible spreadsheets with database power
Stars
11,733Last commit
8 hours agoLicense
Apache-2.0
A versatile data management platform combining spreadsheet simplicity with relational database capabilities for efficient data organization and analysis.
Open Source Alternative to:
Simple, secure project management for development teams
Stars
8,993Last commit
8 hours agoLicense
MIT
Self-hosted project management platform with visual task management, data privacy, and complete control over customization - built by developers for developers.
Open Source Alternative to:
The personal finance app for everyone
Stars
9,758Last commit
8 hours agoLicense
AGPL-3.0
An all-in-one personal finance platform. Track, optimize, grow, and manage your money through every stage of life.
Open Source Alternative to:
Realtime client-side database for collaborative apps
Stars
10,509Last commit
3 days agoLicense
Apache-2.0
Instant is a database solution for building real-time and offline-enabled applications, simplifying the development of collaborative products.
Open Source Alternative to:
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Access millions of songs, podcasts, and playlists instantly with personalized recommendations and offline listening across all your devices.
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Tools that run and coordinate multiple AI coding agents in parallel across isolated git worktrees, also known as agent harnesses or agentic dev environments.
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Applications that convert spoken words into text for faster writing across any application.
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c15t – Open-source cookie banner, built for control and lightening fast modern web apps.
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