Felix is a programming language with a fully featured purely functional subsystem embedded in a a traditional Algol-like imperative programming system. The system features garbage collection, static typing, parametric polymorphism, overloading, regular expression matching, and a lot more. A scripting harness is used to invoke source files, but fully compiled binary shared libraries are generated, yielding both rapid prototyping and high performance. Seamless binding of C/C++ code makes interfacing existing libraries easy. Control inversion provides language-level cooperative multi-tasking.
Fetchgals is a Web spider that locates and optionally downloads free pictures and movies from the internet. It comes with an extensive list of Web sites that are visited to locate thumbnail galleries, and the pictures or movies from these galleries can then be downloaded or linked to from local HTML pages. The list of downloaded galleries is kept so that downloads can be resumed after interruption and so that nothing is ever downloaded twice. Disk space is monitored to avoid overruns.
This program runs stat(2) or lstat(2) on each input file and displays the results. By default, stat displays all the attributes returned by stat(2) or lstat(2). Specific attributes can be requested by specifying one of the command-line options. For better integration with scripting languages, the normally human-readable output can be forced to simple, numeric output with a command line option. This utility is inteded to be both command line and output compatible with the utility of the same name on SGI's Irix operating system.
Finite State Machine C++ Template provides a flexible and a type-safe implementation of finite state machine engine. The main features are type safety, user-provided types for states and events, an explicit description of all the transitions concentrated in one place, the ability to form machine behaviour on-the-fly, and the ability to provide user-defined actions for exceptional situations.
FlashBack is a flashcard scheduler based on a card review method described by Sebastian Leitner. It allows one to create and review simple (text only) flash cards. It supports Unicode and complex scripts (via Pango). A simple, tab-separated cardfile format is used allowing for editing the cards with a text editor (e.g., if you can't enter certain script in GTK+).
Flora is a minimalistic but very powerful NoSQL database. It is easy to understand with data readable by both humans and machines, schemaless, Lua-scriptable, remotely accessible through TCP, and portable. It is especially suited for A. I. tasks, and a longer-term goal is support for "natural language" queries.
Foremost is a console program that recovers files based on their headers, footers, and internal data structures. This process is commonly referred to as data carving. Foremost can work on image files, such as those generated by dd, Safeback, Encase, etc., or directly on a drive. The headers and footers can be specified by a configuration file, or you can use command line switches to specify built-in file types. These built-in types look at the data structures of a given file format, allowing for a more reliable and faster recovery. It was originally developed by the United States Air Force Office of Special Investigations and The Center for Information Systems Security Studies and Research.