SmartPOS (Includes->SmartERP distro of Idempiere ERP) is 100% Web
JEE based Accounting web-application.
An open source search engine with RESTFul API and crawlers
Civilizer - Tool to efficiently manage your data/knowledge/idea
Parallel Optimization Library for Java
REHUNT (Restriction Enzymes HUNTing)
A free alternative to MS Money
Piggydb helps you have more fun with knowledge creation.
WebCollector is an open source web crawler framework based on Java.
dotCMS helps enterprises create, manage and deliver content anywhere.
Spaced Repetition System to study Japanese
Reverse image search your photos. Find duplicates. Find similars
General purpose matrix utilities for Java in Parallel Computing
AddressBook is used to store important information for contact purpose
BioDare is Biological Data Repository focused on timeseries data
Search for torrent in private trackers. Works in all platforms.
Utility classes from maps to search engine to random samplers
PyPaPi Java Desktop Application Framework