Sentry

Error tracking and performance monitoring for applications, with a self-hosted option.

LicenseRef-FSL-1.1Source-available (not OSI)

Building on it: what may you do?

Short answers based on the licence, for the version in the catalog.

  • B1 Change the code for internal use in your company Yes, with conditions Usually, for internal use. Check the terms.
  • B2 Build your own product or service on top and offer it to customers as SaaS No Usually no for a service that competes with the vendor, without an agreement.
  • B3 Make a closed-source derivative and sell or distribute it No No, not without an agreement with the vendor.
  • B4 Use the project's name and trademark No No, not without permission. The licence covers the code, not the name or logo.

This is guidance, not legal advice. Check with a lawyer before deciding.

The licence in brief

Functional Source License 1.1 (FSL) (LicenseRef-FSL-1.1)

Source-available. Any use except a competing use is allowed; each version becomes Apache-2.0 or MIT after two years.

What does LicenseRef-FSL-1.1 mean?

This is guidance, not legal advice (inte juridisk rådgivning). Check with a lawyer before deciding.

Facts

Licence
LicenseRef-FSL-1.1
Licence type
Source-available (not OSI)
Open core
No
GitHub stars
45.1k
Latest activity
Deployment
Docker
Login/SSO
SAML
API
Unknown
Multi-tenant
Unknown
EU vendor
Unknown
Source
GitHub API, fetched 2026-10-03

Licence analysis per use case

Sign in to see what the licence means for eight use cases – from internal self-hosting to offering the tool as a service.

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