Factor

Factor (http://factorcode.org) is an expressive, fast and full-featured Concatenative language invented by Slava Pestov. The Factor implementation is released under a BSD license and runs on most common platforms.

Factor has been in development since September 2003, with a strong focus on practical programming all the way through; it began as a scripting language for a game. Factor has a small but friendly and vibrant community, and it is easy to learn.

• Binary packages are available from http://factorcode.org
• Why Factor?
• History
• Features
• Development
• Bug reports
• Community

Documentation:

• Learning Factor
• Examples
• FAQ
• Reference documentation
• Coding Style
• Talks
• Screencasts
• Publications
• Changes