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Billance vs InvoicePlane: catalog facts
Billance	InvoicePlane
Freemium Free to start; details of paid plans are not given in the research.	Free Free and open source, with no paid tier.
Linux	Web, Self-hosted
Creates XRechnung and ZUGFeRD to EN 16931 Converts existing PDF invoices into e-invoices	Covers quotes, invoices, payments and client records in one place EU-compliant eInvoice support
Interface and website are in German Proprietary software	Requires running and securing your own server Project and task management is basic
Downloadable app	Self-hosted
Closed source	Open source
License: Proprietary	License: MIT
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
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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