| Squeak | Open source full-featured implementation of the Smalltalk programming language |
| Help for HTML | Reference to create Web sites with tutorial, tools and design elements. |
| D Programming Language | Systems programming language combining high performance of C and C++ with productivity of languages as Ruby and Python |
| Delphi-Praxis | Forum und Code-Library für Delphiprogrammierer |
| D Source | Open source community for the D Programming Language |
| Perl | The Perl homepage with download and information. |
| Java | Free download of the Java Development Kit and other tools to program in the computer language Java. |
| php classes | Download of php classes with help forum
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| OpenMP | The OpenMP Application Program Interface supports multi-platform shared-memory parallel programming in C/C++ and Fortran |
| Ruby on rails | full-stack, open-source web framework in Ruby for writing real-world applications |
| Eclipse | extensible development platform and application frameworks for building software in almost every language. |
| pear | The PHP Extension and Application Repository provides useful packages for developers for free download. |
| Builder portal | News portal for (Web-) Developers with information sorted by programming languages |
| Ruby | free interpreted scripting language for quick and easy object-oriented programming |
| Netbeans | open-source javabased Integrated Development Environment (IDE) you can download and use for free |
| Javascript.com | Javascript Tutorials and free scripts. |
| swfmill | XML to swf and swf to XML processor with import functionalities |
| JBoss | Server for developing and deploying enterprise Java applications |
| OSFlash | a community-run resource site for open source Flash projects and tools. |
| HTML Validation | Program to validate HTML sourcecode. Lite version for free download. |
| Hotscripts | Very large directory of scripts and tutorials for ASP, C, C++, CFML, Perl, Flash, Java, JavaScript, PHP, XML and Python |
| Natural Docs | Open-source documentation generator which scans your code and builds a HTML documentation from it.
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| Python blog | Articles and Libraries for Python |
| Truevision3D | 3D software development kits with support for Visual Basic 6, Visual Basic.Net, C#, Delphi, Python, and C++.
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| Javabuch | Handbuch zur Java-Programmierung. Die HTML-Ausgabe steht zum freien Download zur Verfügung. |
