Invoicing

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.

It records how much each customer used, applies a price plan, and produces invoices.

A billing and payment service that becomes the legal seller, so sales tax is its responsibility.

Self-hosted time tracking for billable work, with clients, projects, rates and reports.

A subscription billing and payments system that you install and run yourself.

Time tracking that turns into an invoice at the end of the month.

Double-entry business accounting you host yourself, with invoices and financial reports.

It counts usage events as they arrive and enforces per-customer allowances in real time.

A self-installed shop, invoicing and renewal system for selling a service people pay for every month.

Payments for Ruby on Rails apps

Self-hosted recurring billing, invoicing and customer accounts for a small service business, and the only maintained open-source option of its kind.

Self-hosted double-entry accounting with ordering, invoicing, stock and timecards.