Any recommendations for referral marketing management tools for SaaS?

This is the first tool that comes to mind. We tested it several years ago and it was easy to set up / use. It looks as though they've come a long way since then, too :)

I used Maitre. Super simple to install as it's a widget that can be embedded on any webpage. People are rewarded when signing up their friends by getting ahead in the queue. Design is adapted from the block you put the code into, however, you can customise most of the stuff from your Maitre dashboard. It also integrates natively with MailChimp and supports webhooks & callbacks, so that you can really customise it they way you want. Manuel @mnlfrgr (Founder of Maitre) is super helpful whenever in need of a hand. ** New tracking pixel is in private ** - With Tracking Pixel you can basically reward people who refer friends which complete a certain action (eg: a purchase, a download, etc). Instance - give 50% discount to a person who refers 3 friends who sign up to the PRO plan

Kick referral program suites both B2B & B2C hunters. The last one can become a social marketing entrepreneur just in a few clicks and without much effort to grow and monetized community.