fbsql aims to ease the use of Firebird and Interbase databases by providing clean client libraries for different languages. The raw Firebird/Interbase API is very awkward and hard to work with, while fbsql is easy and straightforward, like the sqlite and MySQL APIs. Currently C and Lisp are supported. fbsql uses IBPP, a C++ Interbase/Firebird API for its implementation. It's basically just a thin wrapper around IBPP to make it accessible in C.
ssqlfs uses a defined file/directory structure to generate an SQL database which corresponds to that file/directory structure. Along with support for one-to-many tables, ssqlfs includes support for representing many-to-many tables. Ideally, the filesystem would be interconvertible with an SQL database, but at this point the functions for generating a file/directory structure from the SQL database remain to be thoroughly tested.
The Objex Project (like the GNU Project) aims to develop a complete operating system composed of free and open source software. In contrast to the GNU Project, it aims to build a modern system that brings together all the recent advances in computer science, instead of a Unix-like system. "A complete system" means that it will include the kernel, a full suite of developers tools, user utilities, and a graphical user interface. It is based on OSKit, a framework and a set of utilities, drivers, and program code intended for operating system creation.