Question2Answer has deep support for developers.

This section explains the ways in which Q2A can be integrated and extended:

• Integrate with your user database using single sign-on (requires PHP programming).
• Translate Q2A into another language using a text editor or customize selected URLs or phrases.
• Create your own visual themes using CSS. You may also make changes to the HTML using advanced themes.
• Access Q2A from external PHP code. See also a list of useful functions in Q2A.
• Develop a plugin for Q2A (also see tutorial). Plugins can include modules, layers and/or overrides.