LicenseGuard

Open source licenses and what they require

Grouped by how far their obligations reach. Each page shows the result for hosted SaaS, distribution, customer delivery, internal use, and published libraries.

Public domain dedication

CC0-1.0CC0 1.0 UniversalUnlicenseThe Unlicense

Permissive

MITMIT LicenseApache-2.0Apache License 2.0BSD-3-ClauseBSD 3-Clause LicenseBSD-2-ClauseBSD 2-Clause LicenseISCISC LicenseZlibzlib LicenseCC-BY-4.0Creative Commons Attribution 4.0

File-level copyleft

MPL-2.0Mozilla Public License 2.0EPL-2.0Eclipse Public License 2.0

Library-level copyleft

LGPL-2.1-onlyGNU Lesser General Public License v2.1LGPL-3.0-onlyGNU Lesser General Public License v3.0

Strong copyleft

GPL-2.0-onlyGNU General Public License v2.0GPL-3.0-onlyGNU General Public License v3.0

Network copyleft

AGPL-3.0-onlyGNU Affero General Public License v3.0

Source available (not OSI-approved)

SSPL-1.0Server Side Public LicenseBUSL-1.1Business Source License 1.1Elastic-2.0Elastic License 2.0

Non-commercial only

CC-BY-NC-4.0Creative Commons Attribution-NonCommercial 4.0

Rather than look them up one by one, check what your project actually depends on.

Check your whole manifest →

LicenseGuard reports information derived from published license texts and dependency manifests. It is not legal advice and using it does not create an attorney-client relationship. Results reflect license metadata as declared; they do not identify every obligation or violation. Consult qualified counsel for decisions that matter.