Ledger is a powerful, double-entry accounting system that is accessed from the UNIX command-line. This may put off some users, as there is no flashy UI, but for those who want unparalleled reporting access to their data, there really is no alternative.The amount of data required by Ledger is minimal. It figures out from looking at your data what you mean by it and how you want it reported back to you. Accounts are created as they appear; currencies are created as they\'re referenced. Anywhere that a value can be calculated, you can leave it out - such as the balancing $-10.00 in the above entry.Ledger is a double-entry accounting tool, therefore all entries must balance. If an entry will not balance, it will cause an error and the report will not be generated.Ledger is always checking the accuracies of your entries at every run; you won\'t ever run into problems with \"unaccounted\" sums in an account.NOTE: If you want to avoid building Ledge from source you can also easily install it on your Mac using Fink.Here are some key features of \"Ledger\":