DokuWiki is free and Open Source software. You can download, use and modify it without any charge.
Creating and maintaining DokuWiki takes a lot of time and resources. If you use DokuWiki in your company, please consider donating a few bucks through Paypal using the following link:
Many thanks to all donors!
If you need a receipt for your donation contact me via email.
Individual users might be interested in buying DokuWiki Merchandising like t-shirts or mugs.