When Sumac was privately owned, the price was substantially better than more CMS systems. Customer service also felt very 'personal' too. We always enjoyed working with their support staff and even the CEO! Website support was very limited (PHP built) and required heavy customization for our use. This always got 'clobbered' when new versions came out (expected) so eventually we abandoned it and used a third party. They provided payment gateways connected directly to the software, so it was one thing we didn't need to worry about (compliance etc).

We started to use Sumac to keep track of our members and their membership. We can easily access all the information about a member or a volunteer, which activites they have attended, their donations and their membership renewal. Sumac also emables to export information for acconting such as the number of domations ans membership renewal, the amount and the source.

Sumac is a powerful tool for very specific use-cases eg. membership renewals or ticketing.