EnlightKS LightWeight Candidate is a free Chrome extension.
SourceTec Software Co., Ltd.
The Apache Software Foundation
Develop Java desktop, mobile, and web applications.
ActiveState Software Inc.
Create applications in any programming language, with syntax highlighting.
Klika and TripTracker.net
DrJava Development Team
DrJava is a lightweight development environment for writing Java programs.
Enrico Tröger, Matthew Brush, Colomban Wendling, Frank Lanitz, Nick Treleaven and Dominic Hopf
Small and lightweight Integrated Development Environment.
A lightweight .NET development environment for Component Pascal.
Lubuntu is a flavor of Ubuntu based on the Lightweight X11 Desktop Environment.