Can't find what you're looking for? Why not have a look at the support portal?
Arachni news straight from the project’s blog.
Check-out the ways that you can install Arachni and pick the one that suits you best based on your platform and your needs.
Take a look in the user’s guide to learn how to best utilize Arachni to scan your websites and create useful reports.
Interested in integrating your systems with Arachni? Check out this section.
If you want to take a look at Arachni’s inner workings you can browse through the Yardoc generated documentation.