Key features of Odoo Accounting include its open-source setup, double-entry accounting, and automated invoice management and payment processing. The software is free for one app, but adding additional Odoo options incurs additional costs. Odoo Accounting is praised for its extensive features, user-friendly interface, and time-saving value. However, it lacks specialization in certain areas, such as full-service tax filing and legal compliance. The software requires some coding experience to fully utilize its potential. It is not truly free, as additional functions are split into multiple apps. Development can be unstable, as add-ons may not receive updates frequently. Alternatives to Odoo Accounting include QuickBooks Online and Sage 100.