$ ls -l ~/tools

Free to use. Each one came out of real work. Hosted tools run in your browser; the others you can run on your own server.

• live

  invoice

  Correct invoices for Germany and the EU, with the right VAT note and XRechnung export.

  web · free open
• self-host

  fintrack

  Accounts, transactions, budgets and recurring payments on your own server.

  self-host open
• self-host

  content-studio

  Brief in, script, caption, voice-over, key visual and video out. Bring your own AI keys.

  self-host · BYO keys open
• demo

  skew-map

  A daily put/call skew board with one plain sentence per name. Educational.

  demo · self-host open
• download

  habit-tracker

  A free Excel spreadsheet for tracking your daily habits.

  .xlsx · free Download