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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AI-powered answer engine with dynamic interface generation
Stars
9,155Last commit
4 days 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:
Private meeting notes, no bots, files you own
Stars
9,445Last 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:
Voice-to-text that works offline, privately, on any app
Stars
9,103Last commit
11 hours agoLicense
MIT
Dictation app powered by OpenAI Whisper and NVIDIA Parakeet. Runs locally on macOS, Windows, and Linux with zero data retention and 100+ language support.
Open Source Alternative to:
Simple, secure project management for development teams
Stars
9,372Last commit
14 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:
A certified and battle-tested identity solution
Stars
13,910Last commit
2 months 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:
Accelerate backend development with effortless scalability
Stars
12,413Last commit
2 days 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
19,387Last 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:
Design editor that opens Figma files, runs AI, and stays local
Stars
8,778Last commit
21 hours agoLicense
MIT
A Figma-compatible design editor with built-in AI chat, headless CLI, real-time P2P collaboration, and a Vue SDK for building custom editors. No account needed.
Open Source Alternative to:
Feature flags for rapid, risk-free software deployment
Stars
13,860Last commit
5 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:
Flexible spreadsheets with database power
Stars
11,910Last commit
7 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:
AI-powered PIM for managing product catalogs at scale
Stars
11,019Last commit
5 hours 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:
S3-based serverless Kafka reinvented for cost efficiency
Stars
10,909Last commit
6 days agoLicense
Apache-2.0
AutoMQ is a serverless Kafka alternative built on S3 that offers 10x cost savings, easy scalability, and full Kafka compatibility.
Open Source Alternative to:
Professional RAW photo editing and workflow management
Stars
13,213Last commit
6 hours agoLicense
GPL-3.0
Open source photography workflow application for RAW development. Non-destructive editing, professional color management, and GPU acceleration for photographers.
Open Source Alternative to:
Realtime client-side database for collaborative apps
Stars
10,543Last commit
9 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:
Advanced automated status page for real-time monitoring
Stars
12,255Last commit
2 days agoLicense
Apache-2.0
A highly customizable monitoring solution that provides automated status pages, extensive alerting options, and detailed testing capabilities for your services and infrastructure
Open Source Alternative to:
Open-source integration platform for seamless workflows
Stars
13,992Last commit
8 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:
Lightning-fast search for massive datasets
Stars
11,700Last commit
5 hours agoLicense
Apache-2.0
High-performance search engine designed for big data, offering scalability, real-time indexing, and cost-effective operations.
Open Source Alternative to:
Open source marketing automation for everyone
Stars
10,718Last commit
1 day agoLicense
Unknown
Mautic is a free and open source marketing automation platform that helps businesses manage leads, create campaigns, and analyze results.
Open Source Alternative to:
High-performance distributed database for all workloads
Stars
10,298Last commit
6 days agoLicense
Apache-2.0
Scalable, high-availability database system supporting OLTP, OLAP, and hybrid transactional/analytical processing workloads.
Open Source Alternative to:
Ultra-fast AI gateway with enterprise-grade reliability
Stars
8,596Last commit
5 hours agoLicense
Apache-2.0
Open-source AI gateway delivering 50x faster performance than alternatives. Access 1000+ models from 8+ providers with built-in governance, fallback, and observability.
Open Source Alternative to:
Modern payment infrastructure for digital products and SaaS
Stars
10,336Last commit
5 hours agoLicense
Apache-2.0
Comprehensive payment solution with built-in tax handling, automated benefits, and seamless integrations for digital product and SaaS businesses.
Open Source Alternative to:
Free online accounting for small businesses and freelancers
Stars
10,165Last commit
6 hours agoLicense
Unknown
Self-hostable accounting software covering invoicing, expense tracking, cash flow, and client portals. Free to use, available in 50+ languages.
Open Source Alternative to:
Goal-driven project management for all brains
Stars
11,751Last commit
14 hours agoLicense
AGPL-3.0
Open-source software designed to streamline tasks, boost productivity, and enhance collaboration for teams of all types, including those with ADHD and neurodiversity.
Open Source Alternative to:
2FA token manager for Android with encrypted vault
Stars
13,219Last commit
1 month agoLicense
GPL-3.0
Android app for managing two-factor authentication tokens with encrypted storage, biometric unlock, flexible backups, and import/export from major 2FA apps.
Open Source Alternative to:
Save articles for later reading with complete privacy
Stars
12,997Last commit
2 days agoLicense
MIT
Self-hosted web article archiving tool that extracts content for comfortable reading. Import from Pocket, Instapaper. Open source with API access.
Open Source Alternative to:
Transform complex usage data into accurate, real-time billing
Stars
10,662Last commit
16 hours agoLicense
AGPL-3.0
Open-source billing system that handles metering, usage-based pricing, and invoicing at scale. Perfect for AI, cloud, and API companies needing flexible monetization.
Open Source Alternative to:
Open-source document sharing with powerful analytics
Stars
9,242Last commit
1 month agoLicense
AGPL-3.0
Secure, customizable platform for sharing documents and tracking engagement. Perfect for sales teams, marketers, and businesses.
Open Source Alternative to:
Lightning-fast open source search engine for big data
Stars
12,043Last commit
19 hours agoLicense
GPL-3.0
Open source search database delivering 2.83x faster performance than Elasticsearch. Features vector search, SQL interface, and full-text capabilities.
Open Source Alternative to:
Full-text & vector search at the edge.
Stars
10,573Last commit
4 days agoLicense
Unknown
Blend full-text and semantic search for unlimited queries across 300 global locations. Get precise answers and matches at a flat rate, no matter your search volume.
Open Source Alternative to:
Effortless time tracking for open source projects
Stars
8,966Last commit
20 hours agoLicense
AGPL-3.0
Seamlessly track time across multiple projects, generate insightful reports, and optimize your open source contributions.
Open Source Alternative to:
Simplify your links with this free, modern URL shortener
Stars
11,140Last commit
1 month agoLicense
MIT
Kutt offers a free and open-source solution for shortening URLs, complete with custom domains and detailed analytics.
Open Source Alternative to:
Send invoices, accept payments, manage your business—all free
Stars
10,235Last commit
11 hours agoLicense
Elastic-2.0
Free invoicing software for freelancers and small businesses. Create professional invoices, track expenses, accept online payments, and manage projects without hidden fees.
Open Source Alternative to:
Instant file sharing across devices without setup
Stars
11,531Last commit
6 months agoLicense
GPL-3.0
Share files instantly between devices using peer-to-peer technology. No registration, installation, or configuration required. Works cross-platform.
Open Source Alternative to:
Full-stack observability without the enterprise price tag
Stars
9,930Last commit
7 hours agoLicense
MIT
Open source observability platform unifying session replays, logs, traces, metrics and errors. Fast search, automatic clustering, $0.40/GB pricing.
Open Source Alternative to:
Secure desktop investment tracker for private wealth management
Stars
9,123Last commit
10 hours agoLicense
AGPL-3.0
Wealthfolio is a simple, secure desktop app for tracking investments and managing your wealth without compromising data privacy.
Open Source Alternative to:
Self-hosted bookmark manager built for speed and simplicity
Stars
11,279Last commit
6 days agoLicense
MIT
Minimal, fast bookmark manager with automatic metadata fetching, archiving, multi-user support, and browser extensions. Easy Docker setup with SQLite.
Open Source Alternative to:
Terminal-native AI coding agent built on ZSH
Stars
7,641Last commit
8 hours agoLicense
Apache-2.0
AI coding harness that runs inside your terminal, mixes LLMs per task, and uses multi-agent architecture to handle large codebases without bloating context.
Open Source Alternative to:
Visual web development with code-level control
Stars
9,036Last commit
2 days agoLicense
AGPL-3.0
Powerful no-code platform for building responsive websites. Combines visual editing with full HTML/CSS customization.
Open Source Alternative to:
Passwordless OIDC provider built for self-hosters
Stars
9,420Last commit
17 hours agoLicense
BSD-2-Clause
Self-hostable OpenID Connect and OAuth 2.0 provider that lets users sign in to any OIDC-compatible app using passkeys instead of passwords.
Open Source Alternative to:
Track, analyze, and optimize your investments effortlessly
Stars
9,411Last commit
6 hours agoLicense
AGPL-3.0
Open-source wealth management software for tracking stocks, ETFs, and cryptocurrencies across multiple portfolios
Open Source Alternative to:
On-the-fly image resizing and conversion for your own server
Stars
11,110Last commit
22 hours agoLicense
Apache-2.0
Self-hosted image processing server that resizes, converts, and optimizes images on demand via URL parameters, with built-in security against common attack vectors.
Open Source Alternative to:
Status page and uptime monitoring for growing teams
Stars
9,172Last commit
6 hours agoLicense
AGPL-3.0
Open-source status page and uptime monitor that tracks endpoints from 28 global regions, communicates incidents, and helps satisfy SOC 2 audit requirements.
Open Source Alternative to:
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Stellar Hosted – Managed Open Source software hosting in the EU: secure, compliant, fast.
InfluxDB
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