[Slump]

This my first time seeing Hledger let alone the Emacs integration so thanks for posting this. I've previously used and.co for tracking work, costs and invoicing for some simple contract work but the idea of having a plain text alternative that I can work in Emacs with is worth investigating.

[cup-of-tea]

There is also ledger which already has an emacs mode. I'm not sure what the advantages of hledger are.