ScewTurn Wiki
ScrewTurn Wiki allows you to create, manage and share wikis. The application is based on ASP.NET 3.5 and it can be extended and customized with many plugins and themes. It can store data using a simple, built-in file-system provider or, if you need performance and scalability, it can use SQL Server too. ScrewTurn Wiki supports page revisions and rollbacks, drafts, attachments, simplified file sharing as well as advanced permissions configuration.