A full open-source ERP with nothing held back for a paid edition, if you can carry the setup burden.
From $5/mo · $25/mo useful
- Shops that want to own their system outright and never pay a per-seat bill again
- Manufacturers who need accounting, purchasing and production in one place rather than three subscriptions
- Teams with someone technical who can run a server or manage a hosting partner
Both are fully open with nothing held back; ERPNext publishes more English documentation for a small shop to learn from.