A hard working blogger has recently compiled a list of top 50 wikis as ranked by Alexa and Google’s PageRank system.  Unsurprisingly, Wikipedia is at the top. A good part of the list includes wikis dedicated to collaboration around software and technology. More mainstream wikis are built around travel, Q&A, books and other encyclopedias. 

The rankings may be affected by the fact that some of the wikis, such as second ranked Adobe Labs, are part of a larger site which receives non-wiki related traffic. Despite that, the list is a useful demonstration of the growing use and popularity of the collaborative publishing tool.  The top five wikis made it into the list of 1000 most visited websites.

Here are the top 10:

1. Wikipedia
2. Adobe Labs
3. WikiAnswers
4. TripAdvisor Wiki
5. Apache Wiki
6. WikiMapia
7. Second Life Wiki
8. Wikia
9. AboutUs
10. Debian