Is there any open source user-guide type creation software available? Or is it best to use wiki type systems? We want to be able to create user guides on the fly through a web front end and accessible on the net. Or is this best achieved using Wikis? Thanks
I'd strongly recommend using Wikis. As long as your chosen one's markup covers your needs, it's ideal for user guides.
This post is not 100% on topic - it's about creating user manual for the workplace (as opposed to the software) - but many ideas are still worth reading.
This is a good guide for using Wiki in knowledge sharing.