Free public libraries software for linux

LBC Libraries is a set of easy C libraries that provide classical data types and structures (string, hash, queue, stack, tree).
LBC Libraries package is focused on simplicity and portability. It uses ANSI C (C98 standard not required), and provides the most generic approach possible so that queues can have items of different types, hashes can have keys of different data types, trees can be binary trees or have arbitrary numbers of branches, etc.
Enhancements:
- This release adds minor API changes, enhances the documentation, and fixes major bugs in LBCstring.

DAEMon Raco Libraries (DRLibs) is a collection of useful functions, objects, and routines for C++.
Enhancements:
- This release adds new libraries to manage object lists: doublelist.dr.h, simplelist.dr.h, and sortedlist.dr.h.

PoJoe Component Libraries project is a set of Java POJO components, originally developed for OSMQ. Developers have found these components useful in building robust enterprise applications.
Of note are: a FIFO queue that utilizes memory until a size threshold is reached, paging overflow elements to a disk cache; a dynamic discovery mechanism for locating remote processes by name over an IP network, eliminating the need to identify a remote service with a specific host computer; and a set of peer-to-peer async message components that support n concurrent message publishers for each named subscriber.
Enhancements:
- Minor enhancements and bugfixes, and changing the license from GNU Lesser to Apache 2.0.

The GNU Scientific Library (GSL) is a numerical library for C and C++ programmers. It is free software under the GNU General Public License.
GNU Scientific Library provides a wide range of mathematical routines such as random number generators, special functions and least-squares fitting. There are over 1000 functions in total with an extensive test suite.
Installation Instructions:
GSL follows the standard GNU installation procedure. To compile GSL you will need an ANSI C-compiler. After unpacking the distribution the Makefiles can be prepared using the configure command,
./configure
You can then build the library by typing,
make
Both static and shared versions of the libraries will be compiled by default. Compilation of shared libraries can be turned off by specifying the `--disable-shared option to `configure, e.g.
./configure --disable-shared
If you encounter problems building the library try using the above option, because some platforms do not support shared libraries.
For notes about problems with specific platforms and compilers see the next section of this file (below).
An extensive test suite is available. After compiling the library with "make", it can be invoked with "make check" at the top level. The test output should be directed to a file rather than a terminal, with the command,
make check > log 2>&1
to allow any errors to be examined in detail. By default, only test failures are shown. To see the complete output, set the environment variable GSL_TEST_VERBOSE=1.
If you run the tests and get some failures, please see the notes on platform specific problems below. If you find failures that are not mentioned, please report them to bug-gsl@gnu.org.
The library can be installed using the command,
make install
The default installation directory prefix is /usr/local. Consult the "Further Information" section below for instructions on installing the library in another location or changing other default compilation options.
Enhancements:
- This release adds new support for non-symmetric eigensystems, basis splines, and Mathieu functions.
- It has fixes for all bugs reported since the last release.

Ham Radio Control Libraries is a development effort to provide a consistent interface for programmers wanting to incorporate radio control in their programs.

Hamlib is not a complete user application, rather, it is a software layer intended to make controlling various radios and other shack hardware much easier.

Hamlib will allow authors of such software as logging programs, digital communications programs, or those wanting to develop the ultimate radio control software to concentrate on the user interface and the basic function of the program rather than radio control.

Most recent amateur radio transceivers allow external control of their functions through a serial interface. Unfortunately, control commands are not always consistent across a manufacturers product line and each manufacturers product line differs greatly from its competitors.

Hamlib attempts to solve this problem by presenting a "virtual radio" to the programmer by providing an API to actions such as setting a given VFOs frequency, setting the operating mode, querying the radio of its current status and settings, and giving the application a list of a given radios capabilities. Unfortunately, what can be accomplished by hamlib is limited by the radios themselves and some offer very limited capability.

The Audio File Library provides a uniform and elegant API for accessing a variety of audio file formats, such as AIFF/AIFF-C, WAVE, NeXT/Sun .snd/.au, Berkeley/IRCAM/CARL Sound File, Audio Visual Research, Amiga IFF/8SVX, and NIST SPHERE. Supported compression formats are currently G.711 mu-law and A-law and IMA and MS ADPCM.

Key goals of the Audio File Library are file format transparency and data format transparency. The same calls for opening a file, accessing and manipulating audio metadata (e.g. sample rate, sample format, textual information, MIDI parameters), and reading/writing sample data will work with any supported audio file format. Likewise, the format of the audio data presented to the application need not be tied to the format of the data contained in the file.

The Audio File Library distributed under the GNU Library General Public License.

STUN Protocol Library provides the Simple Traversal of UDP through NATs Library.
STUN Protocol Library, Client and Server implements a simple STUN (Simple Traversal of UDP through NATs) server and client, using the included library.
The STUN protocol is described in the IETF RFC 3489, available from the IETF.
STUN is a lightweight protocol that allows applications to discover the presence and types of Network Address Translators (NATs) and firewalls between them and the public Internet.
It also provides the ability for applications to determine the public IP addresses allocated to them by the NAT.
STUN works with nearly all existing NATs, and does not require any special behavior from them.
As a result, it allows a wide variety of applications to work through existing NAT infrastructure.
The STUN protocol is very simple, being almost identical to echo.
Enhancements:
- Changed to new terminology.

The CentralNic Unicode Library provides some PHP classes for maniuplating Unicode data. These classes are general purpose but are intended for use when working with Internationalised Domain Names (IDNs).

Existing support for Unicode and multi-byte strings in PHP is not great, requiring either an extension that is not compiled into PHP by default, or one of a number of third-party libraries, most of which are not currently maintained (for example, the
I18N_UnicodeString class in PEAR was last updated in August 2004).

There is a Unicode extension under development, but it isnt public yet, and again requires a third party library to do the heavy lifting, so probably wont be enabled in a default PHP build.

Using the CentralNic Unicode Library is as simple as downloading the current release, and including the main Unicode.php file from your scripts. You then get instant access to the two Unicode_String and Unicode_Character classes.

The CentralNic Unicode Library is released under the GNU Library General Public License, version 2.0. This is not the "Lesser" GPL (version 2.1 and higher), which is more restrictive.

The use of the Library GPL means that you can use the code in your own proprietary software. While you are not obliged to pass back any changes you make to the code, we would greatly appreciate it if you did.