Here's a link to find the latest and last version of Act! Pro v22
The Act! company only has subscription versions of their product. Even self-hosted (aka on-premise) is charged subscription.
If you're single user or just a small team of a few people, for the next few months we can get the PRO edition of Act!.
You buy it and you own it. There is NO recurring subscription costs.
There's no free tech support however you will always have US TO HELP 24/7.