Technologies / Security and identity / FusionAuth
Companies using FusionAuth
FusionAuth is a customer identity and access management (CIAM) platform that authenticates users, services, and AI agents and controls what they can access. It is used to handle identity, login, and authorization for applications, and it can be self-hosted, deployed dedicated, or run on-premises.
Summarized from fusionauth.io on 8 Nov 2026.
Seen in12 subprocessor lists
Companies using FusionAuth
Subprocessor listPrivacy policyWebsiteJob postings
A company can count under more than one kind of evidence. Our coverage is partial, so this is not everyone using FusionAuth.
Questions
How many companies use FusionAuth?
12 companies in StrataDB's data have public evidence for FusionAuth, and 12 of them name it in their own subprocessor list. Our coverage is partial, so the real number is higher.
Which companies use FusionAuth?
Apptegy, Databox, Ellii (formerly ESL Library), Level All and Lumi Education, and 7 more companies. Each one links to the evidence behind it.
How does StrataDB know a company uses FusionAuth?
From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.
Build your list of FusionAuth customers
See every company we hold evidence for, with its source, and get an alert when a company adds or drops FusionAuth.
- Every company and vendor, with its public source
- 100 API calls a month, plus MCP and the Chrome extension
- Work email only. No card, no sales call