I’m looking for a bookkeeping solution for freelancers in Germany. The goal is to replace various spreadsheets.
It must be FLOSS.
It must run on GNU/Linux (can be a self-hosted web app or a desktop client with GUI).
It must be actively maintained.
What I need:
- No double-entry bookkeeping! I only need the most simple kind: just let me track expenses and revenues, based on incoming and outgoing invoices.
- For each invoice, let me record data (like the bill number, the date, the net sum, the gross sum, the tax) and let me attach it as PDF.
- Let me track which invoices were paid, and when.
Output the data necessary for filling out all the required forms on ELSTER (bonus points if the solution can submit some forms itself), e.g.: