The modern Java bytecode editor
A simple and easy-to-use library to enjoy videogames programming
VisualVM is an All-in-One Java Troubleshooting Tool
Open-source JavaScript library for mobile-friendly interactive maps
Interactive JavaScript Charts built on SVG
C++ CSV parser library
UI library by WeChat design team
A Python visual Flow Based Programming library
Free Open Source Reporting tool for .NET
TX Library is a tiny graphics library for Win32 written in C++.
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
C++ cryptographic library (modern hash functions, ciphers, KDFs)
Paged Lists & Iterators GXS for C++ Sources by Vincent Radio {Adrix.NT
Coroutines for Delphi and Free Pascal
Various libraries for Freepascal, Lazarus, PHP and .NET
Portable Graphics Primitives
A .NET6 WPF Pdfium-based viewer control and printer object.
The C++11 library, msvc2015u3/gcc5.4 + cmake,python,bash,vbs modules
Nesting SDK, Library
A C# Control use to edit RTF can replace RichTextBox.