Record double-entry accounts in plain-text files and generate financial reports.
Everything (plain-text double-entry)

Business & marketing
Manage invoices, customers, orders and business accounts.
Manage invoices, customers, orders and business accounts.
Bookkeeping and accounting beyond a limited free baseline; not a substitute for every bank-feed, payroll or tax-filing service. Manage invoices, customers, orders and business accounts.
Requires server maintenance and module setup. Commercial hosting and some extensions cost money; tax filing and bank integrations vary.
Each comparison covers the workflow described above, rather than every paid feature.