gsm library

HS X.25 (with RFC1613 XOT) C Source Library for X.25 over IP

LLIB Licensing/Protection Library

Quick PDF Library is a royalty-free PDF SDK with 500+ functions.

HS Sockets C Source Library for Windows Win Mobile and Linux.

A rubyonrails plugin. Offer a easy way to build online media library.

HotPDF is a PDF Creation Library for Delphi and C++ Builder.

Java Class library for creating PDFs with Reader and Digital Signatures

Computational Geometry Algorithms Library (CGAL) offers data structures

XD++ Library for by UCanCode.Net Software, an C++ class framework

OAI Document Library is a document management application.