Wiki Engine and Wiki Farm

What are Wiki Engine and Wiki Farm?

• Wiki engine or wiki software runs a wiki, i.e. you can integrate it to your own website with your own domain name.
• Wiki farm is wiki hosting service. Many but not all of them live by advertisement.

Which Wiki Engine to use?

• Comparison from Wikipedia
• WikiMatrix: compare wiki engine side by side

Which Wiki Farm to use?

• Comparison from Wikipedia ad Wikiversity
• MediaWiki web hosting

Personal choice

I use MediaWiki, which is a Wiki Engine with a preference close to Wikipedia. It is based on PHP and database software (e.g. MySQL and SQLite3). The database allows as many pages as you want (I heard another wiki engine MoinMoin uses text file and is okey for < 10K pages). It is full featured and has many extensions.