License Change

Switching from MIT to Apache 2.0

We are huge fans of the MIT license, especially the simplicity makes it a perfect license for small software projects.

Yet due to the grow of PSONO we have taken the time to look up other open source licenses that are compatible to MIT, but protect contributors better. Thats why we will switch to Apache with the next release.

The official documentation already reflects this change. All Contributions to Psono will be licensed under:

Copyright 2017 Sascha Pfeiffer

Licensed under the Apache License, Version 2.0 (the “License”);
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an “AS IS” BASIS,
See the License for the specific language governing permissions and
limitations under the License.

Further we have added the “Developer Certificate of Origin”, which people around the Linux Kernel might be familiar with, as rquirement for contributions.

Developer Certificate of Origin
Version 1.1

Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
1 Letterman Drive
Suite D4700
San Francisco, CA, 94129

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.

Developer’s Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or

(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or

(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified

(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.

Each commit must include a DCO which looks like this

Signed-off-by: Joe Smith

The project requires that the name used is your real name. Neither anonymous contributors nor those utilizing pseudonyms will be accepted.

Set your and in your git config and then always user the -s or ––signoff flag to add the “Signed-off-by line” to the end of the commit message.