Graphics
DrawSWF, Java Image Studio, JChemPaint, jPicEdt for LaTeX, Meson Platform, Nonosee, Raja
Network
HTTP, Shell and Terminal Access, Ad Dispenser Server, DAV Explorer, Duncan Gough - Code, Extracta, FTP Client, Gnutmeg, Java URL, jCVS, JDistro, jFTP
Utilities
App Managers, Copying and Downloading, Image Utilities, BigAl, BZip for Java, Diff, DynamicPDF Merger for Java, Follow, Freewares - Java Tools and Utilities with Source C, Fsgrep, GNU JTar, IzPress, Jacksum
AntiChess
An anti chess game written in Java. It supports 2 player and 4 player games on the same board. [MIT License]
Double Choco Latte
Project to create a solution for managing some IT departments including software development and call center activity. It has a web interface and will also have a stand-alone Java client. [Open Source, GPL]
Free Referenda & Elections Electronically
Java system for providing secure, private and reliable ballots via the Internet. [Open Source, GPL]
HALLoGRAM
Catalogue commercial Java programs and training tools.
JabaDex
Cross-platform Personal Information Manager. [Open Source, BSD-like]
JabaMud Game Engine
A MUD engine with a 3D twist. [Open Source, MIT License]
JChessBoard
Chess game, user against computer or user against other human via the Internet; Java 1.2 required. [Freeware, GPL]
JCye
Cye robot controller software. [Freeware]
Jeppers
A full featured web-based spreadsheet editor written in Java. It also provides an grid component that can be used in Swing applications. [Open source, GPL]
Jesktop
A desktop system written in Java that can have GUI applications installed into it.
Jess
A Java Expert System Shell and scripting environment. [Commercial]
JHDL
A set of FPGA CAD tools developed at Brigham Young University's Configurable Computing Laboratory that allows the user to design the structure and layout of a circuit, debug the circuit in simulation, netlist and interface for bit-stream synthesis. [Open source]
jTedley software
Free and open-source Java desktop tools games and other applications, including mAS (mp3AutoSlideshow), jTFlashManager, jTSweep minesweeper game, jTConcentrate game.
Linux-Kontor
Free business management software. Despite the name, this is written in Java and will run on any Java virtual machine. [Open Source, LGPL]
m-e-c eagle
JAVA XML B2B integration software. Features a Swing-based GUI, converters for EDI to XML, XML to XML and XML to EDI, client-server architecture. All EDI standards are supported: EDIFACT, ANSI X.12, SAP IDOC, XCBL, RosettaNet, Biztalk. Supported protocols: SMTP, FTP, HTTP(S), PGP/MIME. [Open Source, Mozilla Public License]
MindRaider
A Semantic Web outliner/cognition organizer/mind mapper and RDF browser/editor. [Open source, GPL]
Online organizer and workplace web application
Java-based workplace and intranet application with WebDAV support. Source code open to licensees. [Commercial].
PacDasher
Pac-Man clone. Includes original mazes and lets create custom mazes with XML. Requires Java 1.4.
Pokermi
Free Java game to play Poker and Big2 against your computer or others over the Internet.
PowerTier 6 for J2EE
Persistence Software's J2EE compliant EJB development toolset and application server [Commercial].
Saffron Document Server
An all-Java, high concurrency Postscript interpreter and family of output modules. It generates PDF, HTML, RTF, TIFF and other file formats.
Sharp Tools Software's Spreadsheet
100% Java and Excel compatible.
ThinkFree Office
Java-based word processor, spreadsheet, presentation package that offers Microsoft Office compatibility.
TransJ
A desktop translator which uses AltaVista Babel Fish service. [Open source, GPL]
Vermin ExTerminator
A free multiplayer first-person shooter. It is a mix of liero and a real-time worms. The game is written in Java with LWJGL as OpenGL and OpenAL interface. [Open source]
VisualVersion
BusyTime time management application, and BackupSW practical file backup solution. [Commercial]