Compile and run Java programs without using command mode!
HATE's an ASN.1 Text Editor.
Lightweight, quick reference tool for Java developers.
DocBook Editing and Processing for Eclipse
yEdGen can open a flow chart and generate ANSI C code from it.
Light-weight Scintilla-based text editor with syntax highlighting
A PlantUML editor written in Qt4
Cress is a comprehensive toolset for graphical service/workflow design
Pure Trait-based Programming on the Java Platform
An assembler and disassembler for the JVM (Java Virtual Machine)
SQL front end for data administration and quick query hacks
LEGO EV3 Utilities and Assembler
Clean, powerful templates for Java
Semantic researcher networking
Generator's generator (JSON templates plus automatic DSL generation)
Node.js & Java development in Eclipse-based IDE
Open source tools for control flow analysis of java programs