These are the tools I actually use to run my business and build my clients' programs. Everything in my templates is built on them, so they're what I'd tell you to start with.
It's what runs every checkout I sell through. Bumps, one-click upsells, payment plans and affiliate payouts are built in, and it's a one-time price instead of another monthly bill.
Every template in my programs lives in Notion, because clients can duplicate a whole kit in one click and make it theirs. The free plan is plenty to start.
A spreadsheet that thinks. My Clients for Life Tracker runs on it, so you can see who needs a check-in, who's ready to renew, and who's gone quiet, all in one view.
My pick for hosting a paid community. Your group, courses, live events and member chat all live in one branded space, so clients aren't scattered across Facebook groups and email threads.
Heads up: some of these are affiliate links. If you sign up through them I may earn a commission, at no extra cost to you. I only recommend tools I use in my own business.