[License-discuss] Adding the curl license

Christoph Röth Christoph.Roeth at web.de
Sat Jan 3 11:38:54 UTC 2026


Dear OSI License Discussion Forum,


I would like the curl license to be added. Th|e license has been around 
for quite some time, so it can be classified as a legacy license. The 
license is available at SPDX. Please find the required information 
attached.|


**• Submit a copy of the license as an attachment in simple text format.**

COPYRIGHT AND PERMISSION NOTICE

Copyright (c) 1996 - 2015, Daniel Stenberg, <daniel at haxx.se>.
All rights reserved.

Permission to use, copy, modify, and distribute this software for any 
purpose with or without fee is hereby granted, provided that the above 
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF 
THIRD PARTY RIGHTS. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of a copyright holder shall 
not be used in advertising or otherwise to promote the sale, use or 
other dealings in this Software without prior written authorization of 
the copyright holder.


**• Affirmatively *state that the license complies*with the Open Source 
Definition, including specifically affirming it meets OSD 3, 5, 6 and 9.**

I can confirm that the license complies with the Open Source Definition.

3. Derived Works: Yes

5. No Discrimination Against Persons or Groups: Yes

6. No Discrimination Against Fields of Endeavor: Yes

9. License Must Not Restrict Other Software: Yes


**• Identify what projects are *already using*the license.**

The curl project itself.


**• Provide the identity and contact details of the *license steward*, 
if known, and of the submitter. The OSI will try to get in touch with 
the license steward if the license submitter is not the steward.**

Daniel Stenberg, <daniel at haxx.se>


**• Provide any additional information that the submitter believes would 
be helpful for license review. For example, approval of the license by 
Debian, the FSF or the Fedora Project would be relevant to the review 
process.**


The website contains this text with detailed information about the 
license, https://curl.se/docs/faq.html#license


What license does curl use exactly?

curl is released under an MIT derivative license. It is similar but not 
identical to the MIT license.

The difference is considered big enough to make SPDX list it under its 
own identifier: curl.

The changes done to the license that make it uniquely curl were tiny and 
well-intended, but the reasons for them have been forgotten and we 
strongly discourage others from doing the same thing.


**• Provide a *unique name*for the license, preferably including the 
version number.**

Full name: |curl License ||(according to SPDX)|

Short identifier: |curl ||(according to SPDX)|


**• If any exist, provide the unique identifier by other projects, like 
SPDX or ScanCode.**

https://spdx.org/licenses/curl.html <https://spdx.org/licenses/curl.html>


Best regards

Christoph

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensource.org/pipermail/license-discuss_lists.opensource.org/attachments/20260103/4c158db9/attachment.htm>


More information about the License-discuss mailing list