FlexWiki uses .NET technology and has an integrated scripting language called WikiTalk. WikiTalk is based on the Smalltalk programming language (hence its name). It is a simple object oriented language that allows users to add dynamic behaviors to their topics.
While most wiki software systems use a DBMS to store their content, FlexWiki started out with a textual storage system. Content was stored in text files, reducing some of the administrative overhead of maintaining a wiki site. With the release of v1.8.01653, it became possible to store FlexWiki's content in an SQL Server database, but the original textual storage system is still available and is the default storage type. It is generally not necessary to scale FlexWiki due to the advanced caching, but scaling is possible using SQL Server, providing that caching is turned off.
One of the primary developers of FlexWiki, Craig Andera, left the project in 2008. Sometime in early 2009, all development stopped, and the main website for the software, at flexwiki.com, went offline.
The internal Microsoft discussion forum Channel 9 used FlexWiki for a period of time, but no longer does.