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Browse Open Source Alternatives
Explore the complete first batch of open-source alternatives with repository metrics and direct learning previews.
Browse Open Source Alternatives
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775 of 775 tools
Flipt
GPL-3.0
A feature flag platform that integrates with Git workflows, enabling developers to manage features directly in their codebase.
Friendly Captcha
MPL-2.0
Privacy-compliant CAPTCHA alternative using proof-of-work technology. Protects websites from bots and spam without user interaction or data tracking.
mCaptcha
AGPL-3.0
Privacy-focused proof-of-work CAPTCHA system that silently protects websites without tracking users or requiring image solving. Drop-in replacement for reCAPTCHA.
Private Captcha
Unknown
Privacy-first CAPTCHA service that blocks bots while keeping forms accessible. No puzzles, no tracking, no cookies - just invisible cryptographic protection.
Procaptcha
Apache-2.0
A blockchain-based CAPTCHA solution offering improved security, user experience, and resistance to bot attacks for web applications.
Marble
Unknown
An open-source platform that enables fintech companies to monitor transactions and user activity, detect suspicious behaviors, and automate fraud prevention in real-time.
FauxPilot
MIT
FauxPilot - an open-source alternative to GitHub Copilot server
YouCompleteMe
GPL-3.0
A code-completion & code-comprehension server
doccano
MIT
Open source annotation tool for machine learning practitioners.
ChatRWKV
Apache-2.0
ChatRWKV is like ChatGPT but powered by RWKV (100% RNN) language model, and open source.
OpenAssistant
Apache-2.0
OpenAssistant is a chat-based assistant that understands tasks, can interact with third-party systems, and retrieve information dynamically to do so.
btw
GPL-3.0
Open source Medium alternative- set up your personal blog in minutes.
WriteFreely
AGPL-3.0
A clean, Markdown-based publishing platform made for writers. Write together and build a community.
Bugzilla
MPL-2.0
Official repository for the Bugzilla bug tracking system. Report bugs to https://bugzilla.mozilla.org/enter_bug.cgi?product=Bugzilla&format=__default__ . Main website:
crowd.dev
Apache-2.0
LFX Community Data Platform (CDP)
Flagr
Apache-2.0
Flagr is a feature flagging, A/B testing and dynamic configuration microservice
JanusGraph
NOASSERTION
JanusGraph: an open-source, distributed graph database
Revert
AGPL-3.0
Revert makes it incredibly easy to build integrations with any third party API
DashPress
AGPL-3.0
Generate powerful admin apps without writing a single line of code - Run `npx dashpress` to see some magic!
ILLA
Apache-2.0
Low-code platform allows you to build business apps, enables you to quickly create internal tools such as dashboard, crud app, admin panel, crm, cms, etc. Supports PostgreSQL, MySQL, Supabase, GraphQL, MongoDB, MSSQL, Rest API, Hugging Face, Redis, etc. Automate workflows with schedule or webhook. Open source Retool.
Openblocks
AGPL-3.0
🔥 🔥 🔥 The Open Source Retool Alternative
SolidInvoice
MIT
Simple and elegant invoicing solution.
Kanboard
MIT
Kanban project management software
Dub
NOASSERTION
The modern link attribution platform. Loved by world-class marketing teams like Framer, Perplexity, Superhuman, Twilio, Buffer and more.