Anjuta is a versatile Integrated Development Environment (IDE) for the GNOME desktop. It features a number of advanced programming facilities that include project management, application wizards, an on-board interactive debugger, an integrated glade UI designer, integrated devhelp API help, an integrated valgrind memory profiler, an integrated gprof performance profiler, a class generator, a powerful source editor, source browsing, and more.
DiaCanvas is a generalized version of the drawing canvas used by DIA. It extends some features used by DIA and adds new ones, while preserving as many of the original features as possible. This project is no longer actively maintained. It is suggested that you try DiaCanvas2 instead.
fam++ is a C++ wrapper for fam, which uses imon or DNotify (Linux 2.4.x) to inform it when inodes change (the net effect being that applications can register interest in a file, and have events send to the application when the file changes). Fam++ also integrates with gdk and Loki to make creation of C++ GTK+/GNOME apps simpler.
GNOME Basic is an attempt to provide a 100% compatible replacement for Visual Basic, VBA, VBScript, and other associated languages. It was originaly focused at making VBA macros work inside gnumeric, but due to scope slippage it executes some forms, parses most VB, and executes simple ASPs. With better Bonobo integration, a fully compatible MS environment will become feasible.
GNOME is the GNU Network Object Model Environment. This project is building a complete, user-friendly desktop based entirely on free software. This desktop consists of small utilities and larger applications that share a consistent look and feel. It uses the GTK as the GUI toolkit for all GNOME-compliant applications.
Libgda is a (relatively small) database access library. It provides a wrapper like ODBC but with more features for accessing several database engines, a general data model for use with CSV or XML files, a metadata extractor that retrieves information about database objects in a common way, and a SQL console application (like mysql, psql or sqlite3 consoles).