The Qt XInput Extension is a C library adding support for XInput devices (like tablets or joysticks) to Qt-based X11 applications. QXi supports devices with up to six valuator axes in absolute mode, up to 32 buttons, and any number of keys. It is built using autoconf and libtool, and comes with a simple example application.
deal.II is a C++ library supporting the generation of complex adaptive finite element codes. It features locally-refined grids, various scalar and vector-valued finite elements, linear solvers of low and higher order, arbitrary mappings, and support for 1, 2, and 3D computations. It comes with extensive documentation and example programs showing the use of the library for modern finite element programs.
The IBiz E-Payment Integrator provides a way to add secure and reliable Internet payment processing to your applications. The product contains libraries and PHP extensions for credit card and electronic check (ACH) processing via major Internet payment gateways (more than 50 gateways supported including Authorize.net, IBill, LinkPoint, etc.). It includes source code for compilation on various Unix platforms, a framework for Objective-C (Cocoa) Mac OS X development, native PHP extensions, and more.
IBiz QuickBooks Integrator is a suite of class libraries and PHP extensions for Internet-enabled QuickBooks (QBXML) integration. It provides components for facilitating tasks like adding/updating/retrieving customer info, vendor/employee info, transactions, and more. It includes source code for compilation on various Unix platforms, a framework for Objective-C (Cocoa) Mac OS X development, native PHP extensions, and more.