ToutDoux is a project manager for GNOME. The approach of data manipulation is abstract (database free). It's extensible with plugins. Most tasks are and will be subcontracted with commandline frontends. The file format is XML (including a schema, plugins parameters, and datatables).
SyncEvolution synchronizes personal information management (PIM) data like contacts, calenders, tasks, and memos via the SyncML information synchronization standard. SyncEvolution compiled for GNOME's Evolution supports all of these data items. Compiled for Nokia 770/N800/N810 Internet Tablets, Mac OS X, and the iPhone, it supports synchronizing the system address book. The command line tool 'syncevolution' (compiled separately for each of these platforms) executes the synchronization.
Admelix is a live CD distribution based on Ubuntu Linux with tools for business administration. Its main objective is to guide managers of small and medium-size businesses towards GNU/Linux and open source software. In addition to the live CD, the project's Web site provides information about open and free tools for business administration.