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FOSSBilling vs ITFlow: catalog facts
FOSSBilling	ITFlow
Free Free and open source under the Apache 2.0 licence, funded by donations.	Free Free and open source.
Web, Self-hosted	Web, Self-hosted
Automatic provisioning on common hosting control panels Domain management and built-in ticketing	Documentation, ticketing and billing in one self-hosted app Tracks assets, licences, domains and client documents
Still in beta with limited support Aimed mainly at hosting businesses	You host and maintain the server yourself Built around MSP workflows rather than a single company's IT
Self-hosted	Self-hosted
Open source	Open source
License: Apache-2.0	License not stated
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 2, 2026	Official website Full listing and sources Checked September 24, 2026

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