VLC media player - plays everything, runs anywhere. Code here: https://code.videolan.org/videolan/vlc
OpenPDF is an open-source Java library for creating, editing, rendering, and encrypting PDF documents, as well as generating PDFs from HTML. It is licensed under the LGPL and MPL.
ObsPy: A Python Toolbox for seismology/seismological observatories.
MiniMax-H3超级缓存加速插件
OpenShot Video Library (libopenshot) is a free, open-source project dedicated to delivering high quality video editing, animation, and playback solutions to the world. API currently supports C++, Python, and Ruby.
iTextSharp.LGPLv2.Core is an unofficial port of the last LGPL version of the iTextSharp (V4.1.6) to .NET Core