Route64 Eclipse Plugin is a plug-in for the Eclipse Workbench. It supports manipulation off image files and can be extended by other plugins. The programms can be executed on an emulator. The project is targeted on the the Commodore 64 emulator Route64.
J2MEFS is an API for the J2ME that extends the RMS. It lets you save persistent data in your MIDlets without even knowing what a RecordStore is. You can create a structure of directories and access files through names and paths (MIDP 1.0 and above).