Framework for quickly creating connected applications in Kotlin
Arianne is an engine to develop multiplayer online games like Stendhal
A modern C++ GUI library
Turbo is a framework built for LuaJIT 2
one server framework
A free Java KNX network library
A Task Processing Framework for Java
3D .NET engine for Windows, Linux, Mac
Rapid web development tool for business applications
A powerful PHP framework for web applications
Modular Gaming Open Source Persistent Browser Based Game Framework
Cross-platform C++ libraries with a network/internet focus.
Open source Extract Transform Load engine written in Java
Open Source Content Management System for teams.