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InvoiceShelfBillance
Free

Free and open source under the AGPL-3.0 licence, with no per-seat fees.

 Freemium

Free to start; details of paid plans are not given in the research.

Web, Self-hosted Linux
  • Invoices, estimates, payments and expenses in one place
  • Recurring invoices and a customer portal
  • Creates XRechnung and ZUGFeRD to EN 16931
  • Converts existing PDF invoices into e-invoices
  • You maintain the server and backups yourself
  • The 3.x branch is an alpha preview not meant for production data
  • Interface and website are in German
  • Proprietary software
Self-hosted Downloadable app
Open source Closed source
License: AGPL-3.0 License: Proprietary
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.