Zoho Invoice - 100% free online invoicing software for small businesses.
Grisbi - Accounting for everyone !
Bill.com - Bill.com provides ACH payments processing, automates your accounts payable and accounts receivable processes.
Finice - Finice is a sophisticated Money Tracker that aims to bring together all your finances in a single place.
Wise - Currency exchange Banks and other providers could charge you up to 5% in hidden costs when sending ...
Ledger-cli.org - Ledger is a powerful, double-entry accounting system that is accessed from the UNIX command-line.