License Intel

Check a list of license ids against SPDX: current, deprecated or unknown, with the modern GNU -only / -or-later form.

Compare two open-source licenses side by side: what each permits, requires and disclaims, and which is stricter.

Look up an SPDX license exception id such as Classpath-exception-2.0: its name, links and deprecated status.

Validate an SPDX license expression (AND, OR, WITH, +): syntax, known ids, known exceptions and deprecated identifiers.

Classify up to 30 license ids by strength: public-domain-like, permissive, weak copyleft, strong copyleft or network copyleft.

Look up an SPDX license id: name, OSI and FSF status, deprecated flag, links, and plain-language permissions and duties.

Plain-language checklist for a license: what you may do, what you must do when you distribute, and what is disclaimed.

Search the SPDX license list by name or id fragment, such as gpl or creative commons, with OSI and deprecated flags.

List current OSI-approved SPDX licenses, optionally only FSF-libre ones or those starting with a prefix.