Blue Oak Council opens the software commons up to those who can’t find or afford specialized legal help by bringing experienced lawyer-technologists together to publish free, practical materials about software licenses.
Permissive License List
Blue Oak maintains a rated list of permissive software licenses
Permissive licenses are the bread and butter of software development: simple, effective, and on just about everyone’s “go” list. But most information about free and open source software focuses on other, more complex licenses. The Council publishes this list to identify permissive licenses, so that everyone can recognize, rely on, and use them without expensive legal help.
I've copied the Gold and Silver sections below.
Gold
These licenses address patents explicitly, use robust language, and require only simple notice of license terms and copyright notices.
-
BSD-2-Clause Plus Patent License (
BSD-2-Clause-Patent
)
Silver
These licenses use robust language but either fail to address patents explicitly or require more than simple notice of license terms and copyright notices.
-
Amazon Digital Services License (
ADSL
) -
Apache License 2.0 (
Apache-2.0
) -
Adobe Postscript AFM License (
APAFML
) -
BSD 1-Clause License (
BSD-1-Clause
) -
BSD 2-Clause "Simplified" License (
BSD-2-Clause
) -
BSD 2-Clause FreeBSD License (
BSD-2-Clause-FreeBSD
) -
BSD 2-Clause NetBSD License (
BSD-2-Clause-NetBSD
) -
BSD 2-Clause with Views Sentence (
BSD-2-Clause-Views
) -
Boost Software License 1.0 (
BSL-1.0
) -
DSDP License (
DSDP
) -
Educational Community License v1.0 (
ECL-1.0
) -
Educational Community License v2.0 (
ECL-2.0
) -
hdparm License (
hdparm
) -
ImageMagick License (
ImageMagick
) -
Intel ACPI Software License Agreement (
Intel-ACPI
) -
ISC License (
ISC
) -
Linux Kernel Variant of OpenIB.org license (
Linux-OpenIB
) -
MIT License (
MIT
) -
MIT License Modern Variant (
MIT-Modern-Variant
) -
MIT testregex Variant (
MIT-testregex
) -
MIT Tom Wu Variant (
MIT-Wu
) -
Microsoft Public License (
MS-PL
) -
Mulan Permissive Software License, Version 1 (
MulanPSL-1.0
) -
Mup License (
Mup
) -
PostgreSQL License (
PostgreSQL
) -
Solderpad Hardware License v0.5 (
SHL-0.5
) -
Spencer License 99 (
Spencer-99
) -
Universal Permissive License v1.0 (
UPL-1.0
) -
Xerox License (
Xerox
) -
Xfig License (
Xfig
)