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S-Lang is a multi-platform programmer's library designed to allow a developer to create robust multi-platform software. It provides facilities required by interactive applications such as display/screen management, keyboard input, keymaps, and so on. The most exciting feature of the library is the slang interpreter that may be easily embedded into a program to make it extensible.

libtar is a C library for manipulating tar archives. It supports both the strict POSIX tar format and many of the commonly-used GNU extensions.

You can use tpl to store and reload your C data quickly and easily. Tpl works with files, memory buffers and file descriptors so it's suitable for use as a file format, IPC message format or any scenario where you need to store and retrieve your data.

The primary goal of this project is to define a portable and efficient C programming interface (API) to determine the call-chain of a program. The API additionally provides the means to manipulate the preserved (callee-saved) state of each call-frame and to resume execution at any point in the call-chain (non-local goto). The API supports both local (same-process) and remote (across-process) operation. As such, the API is useful in a number of applications. Some examples include: o exception handling The libunwind API makes it trivial to implement the stack-manipulation aspects of exception handling. o debuggers The libunwind API makes it trivial for debuggers to generate the call-chain (backtrace) of the threads in a running program. o introspection It is often useful for a running thread to determine its call-chain. For example, this is useful to display error messages (to show how the error came about) and for performance monitoring/analysis. o efficient setjmp() With libunwind, it is possible to implement an extremely efficient version of setjmp(). Effectively, the only context that needs to be saved consists of the stack-pointer(s).

The GNU Binutils are a collection of binary tools. The main ones are: * ld - the GNU linker. * as - the GNU assembler. Most of these programs use BFD, the Binary File Descriptor library, to do low-level manipulation. Many of them also use the opcodes library to assemble and disassemble machine instructions. This port may be used as a replacement for the system binutils and support features from the latest versions of GCC. For cross-compilation, see the devel/cross-binutils port.

libvanessa_adt is a library that provides Abstract Data Types (ADTs). It includes queues, dynamic arrays and key values.

Handy library for manipulating strings, string arrays, buffers, CGI forms, configuration files, textual templates, regular expressions, date and time conversions, et cetera. Handles base64, quoted-printable, url_encode, mime-words and other encoded data. Please have a look at strfunc(3) and other manual pages.

LibStroke is a stroke translation library. Strokes are motions of the mouse that can be interpreted by a program as a command. Strokes are used extensively in CAD programs. I fell in love with them when I was using the CAD tools that use a stroke interface to select tools or perform actions. I wrote this library so that others can see how useful strokes can be and so that more programs take advantage of this extremely natural human-computer interface.

libvanessa_logger provides a generic logging layer that may be used to log to one or more of syslog, an open file handle or a file name. Though due to limitations in the implementation of syslog opening multiple syslog loggers doesn't makes sense. Includes the ability to limit which messages will be logged based on priorities.

Libvirt-java is a base framework allowing to use libvirt, the virtualization API though the Java programming language.