Unlicense Generator

The Unlicense explained

The Unlicense was authored by Arto Bendiken in 2010 and published at unlicense.org. Strictly speaking it is not a traditional license — it is a public-domain dedication combined with a fallback license that grants every conceivable right when public-domain dedication is not legally possible. It became OSI-approved in 2020 and is recognized by the FSF as a free, GPL-compatible license.

The grant is total: anyone may use, modify, distribute, sublicense, sell, and even claim authorship of derivatives. There are no conditions at all — no attribution, no notice preservation, no copyleft. A standard WARRANTY DISCLAIMER is preserved to prevent liability against the original author.

Public domain and the legal fallback

In some jurisdictions — notably Germany, France and other civil-law countries — there is no formal way for an author to dedicate work to the public domain while still alive. The Unlicense addresses this by including a fallback license: if public-domain dedication is legally invalid, the text falls back to granting the broadest possible permissions allowed under copyright law. This makes it more robust than a bare "this is public domain" statement.

Unlicense vs CC0 vs WTFPL

• Unlicense vs CC0 — CC0 (Creative Commons Zero) was drafted by Creative Commons lawyers and is generally considered the safer corporate choice for public-domain dedication. Both have similar effects, but CC0's text has been reviewed in more jurisdictions.
• Unlicense vs WTFPL — both are extremely permissive; WTFPL uses humorous, profane wording while the Unlicense reads as a serious legal document, making it preferable in corporate or academic contexts.
• Unlicense vs MIT — MIT requires attribution; the Unlicense requires nothing at all.

Adoption and corporate caveats

Notable users include youtube-dl, various small Python utility packages and many devops one-off tools. However, Google and Red Hat have historically blacklisted the Unlicense in their internal policies due to perceived legal uncertainty around its fallback clause. For new corporate or open-source projects, the FSF and many lawyers recommend CC0 instead because its text has been more thoroughly vetted.

SPDX and use cases

The SPDX identifier is Unlicense. Add // SPDX-License-Identifier: Unlicense at the top of source files. Typical use cases are hobby projects, demos, small utilities and example code where the author truly does not care about attribution or downstream control — the "I really don't care what you do with this" license.

FAQ

Can someone patent a derivative of my Unlicensed code? Yes — releasing to the public domain forfeits all rights, including patent protection. If patents are a concern, prefer Apache 2.0.

Is the Unlicense accepted in corporate environments? Sometimes — but some large companies (Google, Red Hat) restrict it. For corporate-friendly public domain, prefer CC0.

Do users have to attribute me? No — attribution is not required. They may credit you, but they are not obligated.

Does it preserve the warranty disclaimer? Yes — even though all rights are released, the standard AS-IS warranty disclaimer is kept to limit author liability.

Disclaimer. This generator produces a license template — it is not legal advice. Public-domain dedication has different effects in different jurisdictions; consult an attorney for serious projects.