I use org-mode for keeping track of invoices. I make them each a task, and give the tasks states such as FUTURE/INVOICED/PAID/LATE/RECEIPT; this makes it quite

I use org-mode for keeping track of invoices. I make them each a task, and give the tasks states such as FUTURE/INVOICED/PAID/LATE/RECEIPT; this makes it quite hard to lose anything. The data for each invoice is kept in an org-mode radio table, and the invoice itself is generated from a org-mode source blocks. I "call" the invoice source block to generate the invoice, which is usually text but is occasionally LaTeX when the client really insists that they need a PDF. This result goes into a collapsible drawer, and I can easily save it out to a separate file. In fact, when the result is LaTeX it's possible for org-mode to process it into a pdf directly, although there are some quirks to be aware of there. On the other hand, I don't use org-mode for keeping track of normal tasks much.