Currently, LLVM releases are distributed under the University of Illinois Open Source License, an OSI-approved license.

However, LLVM version 8 will be the last release under that license as LLVM is moving to a new license structure. You can find more details about this in the developer's policy.

If you are interested in LLVM, we strongly encourage you to sign up for the LLVM announcements mailing list. This list is an extremely low volume list (less than one email per month) that is a good way to keep track of the high-level happenings in the LLVM community.

LLVM provides extensive documentation in HTML form, which is available in the source download and online.

Date	Version	Download	Release Notes	Documentation
Current	Git	via Git	release notes	docs