Cairo is a 2D graphics library with support for multiple output devices. Currently supported output targets include the X Window System (via both Xlib and XCB), Quartz, Win32, image buffers, PostScript, PDF, and SVG file output. Experimental backends include OpenGL, BeOS, OS/2, and DirectFB.
OCILIB is an open source and cross platform Oracle Driver that delivers efficient access to Oracle databases. It offers a full featured, easy and productive API. Written in ISO C on top of OCI, OCILIB runs on all Oracle platforms.