Freelancers, which tools / systems do you use on a daily basis?

Hey 👋 I'm working on a Notion based product, a Freelance Hub that includes among other things: - Proposal, Contract, invoice, DNA generators - Invoice tracking - Finance & project profitability and Cash Flow - CRM and sales report - GTD project Management - Collaboration Area (to work with other freelancers) - A Client Hub/Portal to facilitate the relationship between client & freelance - And a Grow Are (Learn, Mood journal, Ideas Notes, Bookmarks, and more) I guess most of you use several apps / places to keep all this, right? I'd love to come up with a solution to simplify all this. Do you find it interesting? What would you be missing? Please let me know your thoughts. Thanks!