Apache NetBeans
Arianne is an engine to develop multiplayer online games like Stendhal
A complete 3-D game development suite written in Java
Parser generator to read, process, or translate structured text
Gephi the open graph Viz platform
The SpotBugs plugin for security audits of Java web applications
Cross-platform framework for building truly native mobile apps
Java/JavaFX/Kotlin Game Library (Engine)
Cooperative multiplayer graphical RPG and adventure game
VR Adrix Java Works - Paged Lists - Action-Entity Model ...
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Unicode-XML-TEI text/corpus analysis platform
An in-progress 2D tactical RPG
XRocket Email Tool for Sending Emails to Multiple Users
Arranges alignments in a rotating cylinder
Individualizes Rolemaster creatures.
Helpful tools to extend the NWN Toolset