Blocking map is a Map that additionally supports operations that wait for a key to be available when retrieving an element. Blocking map acts as a synchronizer between producers and consumers in concurrent environment.
Note: The project is now hosted on GitHub (https://github.com/sarveswaran-m/blockingMap/wiki)
JFtpSync is for uploading web content to a server via FTP. It is designed to do FTP uploading only, and do it well, offering recursive uploading of content filtered by file type. It is primarily a command-line tool but there is a Java GUI as well.
JammedUp (short for: JAM and JAD Update) is an automated MIDP and DoJa descriptor file synchronizer.
MIDlets are separated into a JAR executable file and the descriptor file, a brief but accurate description of the JAR file's contents prior to download.