ZK is Ajax framework enriching Web apps with little programming. With event-driven components and XUL/XHTML markup languages, developing is as simple as programming desktops and authoring HTML pages. Scripting support Java, JavaScript, Ruby, Groovy...

Different code generators for creating nice looking flashlets.

w3af is a complete environment for auditing and attacking web applications. This environment provides a solid platform for auditing and penetration-testing. *nix only!

Common Lisp development system. Includes command-line and IDE Lisp interpreters. Possibility of creating EXE-files.

A 100% Open Source CPAN-capable Perl for your Windows computer that works exactly the same as Perl everywhere else.

SDCC is an open source retargettable, optimizing ANSI - C compiler. The current version targets the Intel 8051, Zilog Z80, Dallas 80C390, Motorola HC08 and Microchip PIC MCUs.

Scapy for Windows, ported by our staff member Maboroshi!

Python is a programming language that lets you work more quickly and integrate your systems more effectively. You can learn to use Python and see almost immediate gains in productivity and lower maintenance costs.

Macao is a framework based on JavaScript and DHTML for building animated interactive homepages and applications.

PaiMei, is a reverse engineering framework consisting of multiple extensible components. The framework can essentially be thought of as a reverse engineer's swiss army knife and has already been proven effective for a wide range of both static and dynamic tasks such as fuzzer assistance, code coverage tracking, data flow tracking and more.