7 open source tools under LGPL-2.1
All 7 projects licensed under LGPL-2.1, ranked by GitHub stars. Activity and language shown per project; data refreshed nightly.
AI-powered grammar checker for 30+ languages
Mapnik is an open source toolkit for developing mapping applications
Infrared remote library for ESP8266/ESP32: send and receive infrared signals with multiple protocols. Based on: https://github.com/shirriff/Arduino-IRremote/
Open-source code security engine for developers
NIST Certified SCAP 1.2 toolkit
Comprehensive open-source HR management solution
Open-source knowledge management and collaboration platform
Frequently asked questions
What can I do with LGPL-2.1-licensed code?
You can link it into proprietary software.
What does the LGPL-2.1 licence require?
You must publish changes to the LGPL-covered library and allow substitution.
What does LGPL-2.1 prohibit?
You cannot close the library itself. LGPL-2.1 is not the only option — LGPL-3.0, which adds patent protections is the nearest licence in common use.
Which open source projects use the LGPL-2.1 licence?
7 projects in this registry use LGPL-2.1, with 30,238 GitHub stars between them across 5 languages. The most-adopted is LanguageTool with 15,042 stars, and 7 of the 7 received a commit in the last 90 days.