PDF transformation/manipulation program + library
QPDF is a C++ library and set of programs that inspect and manipulate the structure of PDF files. It can encrypt and linearize files, expose the internals of a PDF file, and do many other operations useful to end users and PDF developers.
The PDL module gives standard perl the ability to COMPACTLY store and SPEEDILY manipulate the large N-dimensional data sets that are the bread and butter of scientific computing.
iROS is a meta-operating system for technology-rich "interactive rooms". The core components (Event Heap, DataHeap, iCrafter) provide communication, data storage, and service management for an iRoom.
Perl bindings for the Allegro Low Level Game Routines library
Hubub is a simple TCP data reflector for quickly building distributed applications. It can broadcast data from one client to many (or many to many) with little system overhead. Written in heavily commented 'c', with example clients in TCL.
Inline::Java lets you write Perl classes in Java and wrap/use existing Java classes. It is an ILSM (Inline Language Support Module) for Java 2, and is part of the Inline family of modules.
Embedded Perl module/interpreter to interface with the Pro/Engineer CAD API (Pro/Toolkit).
A Netscape plugin for Unix's and Win32 enabling browsing and execution of Perl/Tk scripts in a reasonably safe environment.
A Makefile skeleton that includes configuring. Fed up with the autoconf tools? The pConf system is a small, clean make file skeleton that can do configuring tasks and works for different OS environments. Supports C, C++. Documentation (s)POD.