What do you actually use to manage your freelancing workflow?

I’m curious how other freelancers keep everything organized — clients, tasks, invoices, follow-ups, all that chaos.

I’ve been building Ativium Freelancing, a tool that tries to bring all of this into one clean dashboard, but I’d love to understand what you rely on today.

-What’s working for you?
-What’s still messy?
-And what do you wish existed?

( If it helps for context, here’s the project: https://ativium-freelancing.com )