deawk is a very simple double-entry bookkeeping system designed for self-employed people. It uses three (text) data files: transactions, a chart of accounts, and an optional vehicle log. Reports are generated by running bash scripts which run awk. deawk currently does not support depreciation of capital assets.
MyBookkeepingManager is a bookkeeping application aimed at contractors, freelancers, and other very small (micro) businesses. MyBookkeepingManager concentrates on the main bookkeeping activities performed by many such businesses, providing a simple, easy-to-use, software application. The software can be either used online, or it can be downloaded and installed on a Web server of your choice. MyBookkeepingManager enables monthly sales, loans, salaries, income tax, national insurance (both employees and employers), pension contributions, bank interest, bank charges, office or desk rental, and plenty of other expense amounts to be entered. The software then automatically calculates the amount of VAT owed (if you are using the VAT Flat Rate Scheme), and estimates the size of dividends that can be distributed to shareholders and the amount of corporation (business) tax due.