Free source library software for linux

The Adobe Source Libraries (ASL) are a collection of C++ libraries building foundation technology to allow the construction of commercial applications by assembling generic algorithms through declarative descriptions.
Enhancements:
- GIL version 2.1 (support for sub-byte aligned pixel values in images).
- An ASL version_0 namespace has been introduced to maintain binary compatibility going forward.
- There are poly< > library improvements. adobe/vector.hpp and adobe/closed_hash.hpp have been added as generic containers.
- There are many other improvements.

LiON Library is a full nonblocking, single thread library with an API that is portable and easy to use.
LiON Library has full network support, files, and pipes (for spawning children, or processes to communicate with). All types can also be rate (KB/s) limited, and full SSL support is included.
Main features:
- Nonblocking Networking.
- Nonblocking File I/O.
- Nonblocking pipe/system and fork commands for spawning helper programs.
- Event driven, event passback for all situations.
- SSL incorporated, with auto-detection.
- Portable (Already confirmed NetBSD, Solaris, Linux, OsX and Win32)
- Single process / thread library.
- Numerous Sample programs included.
- Support both in-library sleep/CPU-release, or in Application.
- Full buffering control, and flow control.
- CPS (KB/s) rate limits on _any_ I/O type. (Socket, File & Pipe)
- Adoptable foreign file-descriptors API.
- Clean API with documentation, although man-page comming.
- Direct, or event driven, failure modes supported.
- Exclusive File I/O locking optional, across all platforms.
- Internal compression optional.
- Very simple to use for line-by-line protocols, or binary chunk data transfers.
- Full UDP support
- Encrypted File IO support (blowfish, dependent on SSL)
- contrib/ sources include Directory listings library for all platforms.
- Python support! Using SWIG there now is an easy way to do async SSL in Python
- Timers! Callback timers in relative or absolute time. One-shot or repeat.
Enhancements:
- SSL connections could stall based on buffer size, so this has been fixed.
- Minor autoconf changes were made.
- Missing Win32 files were added to the dist-gzip file again.

conexus is a generalized C++ I/O library that includes support for BSD sockets, serial/TTY, and packet capture (via pcap).

conexus library utilizes sigc++ for object communication. A companion library, conexusgtk, provides a set of gtkmm widgets.

btnSMS Library is a C library that provides an easy interface for sending SMS messages through the Beyond The Net SMS service provider.

Messages can be sent to nearly every country in the world with many different options.

IFF Format Library provides header structures and utility functions for reading and writing data files in the Interchange Files.
The Interchange File Format is a simple structured binary file format consisting of sized and typed chunks of data, selectively readable without having to know the format of each chunk.
This functionality is similar to what XML provides for text documents, and the IFF format can indeed be viewed as a sort of a binary XML. IFFs extensibility is an excellent way of not breaking old applications when the file format changes, making it an excellent choice for your next applications data files.
The IFF is also the simplest and the smallest such data format, ensuring that your files consist of real data rather than overhead and that your code spends more time on real work than on parsing the data file. This library defines the IFF header structures and provides simple algorithms for directly writing many of your objects as chunks and containers.
Installation:
This library can be downloaded from SourceForge, as can its sole prerequisite:
libiff - The library source package.
uSTL - An STL implementation, required.
First, unpack and install uSTL, as described in its documentation. Unpack libiff and run ./configure; make install, which will install the library to /usr/local/lib and headers to /usr/local/include. ./configure --help lists available configuration options, in the usual autoconf fashion. The one thing to be aware of is that by default the library will not be completely conforming to EA85 specification. Why that is so, and why you should take the default options anyway, is discussed in detail in the next section. If you really want to use the original EA85 format, you can to pass --with-bigendian --with-2grain to configure.
Usage:
If you are using C++, chances are you already have an object-oriented design of some kind. You have a collection of objects, related to each other in some way, and you want to write them all to a file in some way. It is, of course, possible to just write them all to the file, one after the other, but that approach makes things difficult if you ever decide to change the structure of those objects, write more or fewer of them, or explain to other people how to read your format. Hence, it is desirable to create some kind of structure in the file, to be able to determine where each objects begins and ends, and what kind of object is where. When using an IFF format, youll make simple objects into chunks, and objects containing other objects into FORMs, LISTs, or CATs.
The first task is to make each of your objects readable and writable through uSTL streams. To do that youll need to define three methods, read, write, and stream_size, and create flow operator overrides with a STD_STREAMABLE macro. Here is a typical example:
#include < iff.h > // iff header includes ustl.h, but doesnt use the namespace.
using namespace ustl; // it is recommended to leave iff:: namespace on.
/// Stores players vital statistics.
class CPlayerStats {
public:
void read (istream& is);
void write (ostream& os) const;
size_t stream_size (void) const;
private:
uint16_t m_HP;
uint16_t m_MaxHP;
uint16_t m_Mana;
uint16_t m_MaxMana;
};
// Since the object is simple, and contains no other objects,
// well make it a simple chunk.
enum { // Define a chunk format for writing this object.
fmt_PlayerStats = IFF_FMT(S,T,A,T)
}; // In a hex editor youll see STAT at the beginning of the object
// making it easy to find when you want to hack something in it.
/// Reads the object from stream p is
void CPlayerStats::read (istream& is)
{
is >> m_HP >> m_MaxHP >> m_Mana >> m_MaxMana;
}
/// Writes the object to stream p os.
void CPlayerStats::write (ostream& os) const
{
os<<less