Open source tools
1048 tools in our directory are listed as open source, from 30 sections: Frameworks (89), Open Source (82), UI & Components (80), Dev Utilities (55) and 26 more sections.
Tools
Leantime
Open source project management for teams and personal planning
Learn Git Branching
Interactive browser lessons that teach Git with a visual graph
Lefthook
Fast Git hooks manager that runs linters in parallel on commit
Lenis
Smooth scroll library for JavaScript websites and React apps
Leonardo
Open source colour tool for accessible contrast-based scales
Leptos
Full-stack Rust web framework with fine-grained reactive signals
Lerna
Manages and publishes several JavaScript packages in one repository
Lexical
Extensible text editor framework from Meta with modular plugins
LibreChat
Open source chat interface for many AI model providers
Lighthouse
Audits a web page for speed, accessibility, SEO and more
LimeSurvey
Open source online survey tool that can be self-hosted
linkding
Minimal self-hosted bookmark manager with browser extensions
Linkerd
Lightweight service mesh that adds mTLS and metrics to Kubernetes
Linkwarden
Open source bookmark manager that archives full pages
lint-staged
Runs linters and formatters only on files staged in Git
listmonk
Self-hosted newsletter and mailing list manager in one binary
Litestar
Typed Python ASGI framework with automatic OpenAPI docs
Litestream
Streams SQLite changes to cloud storage for backup and recovery
LitmusChaos
Open source chaos engineering platform for cloud native systems
LiveKit
Open source framework for voice, video and realtime AI agents
Livewire
Full-stack framework for building dynamic Laravel interfaces
lnav
Terminal log viewer that merges, filters and queries log files
LocalAI
Self-hosted server with an OpenAI-style API for local models
localtunnel
Free tool that gives a local web server a public URL
Logseq
Open source outliner for linked notes, journals and tasks
Logstash
Open source server-side pipeline that collects and transforms logs
Logto
Open source auth platform for sign-in, SSO and roles
Lorem Picsum
Placeholder photo API with random, seeded and grayscale images
Lottie
Render After Effects animations natively on web and mobile
Maestro
Simple, open source UI testing for mobile and web apps
Magic UI
Free animated React components and effects that pair with shadcn/ui
mailcow
Self-hosted mail server suite with webmail, spam filtering and Docker
Looking for something else? Browse the full directory.















































