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Licensing the Free 2sxc

The most important things you need to know are

  1. everything in 2sxc is open source and free
  2. 2sxc itself is licensed under the extremely permissive MIT license
  3. 2sxc contains many, many other third party components which are also open source.
    1. The licenses used range from AGPL (very copyleft) to X11 (aka MIT, very free).
    2. Most of the components use very permissive licenses (like MIT or Apache 2.0)
    3. A few components contain copyleft requirements - this is especially relevant for the Image Resizer

So in summary: if you want to create open-source work, you can stop reading now - or just donate something for a good cause. If you don't want to share your work with others, please read on...

MIT license used by 2sxc

The MIT License (MIT)

Copyright (c) 2012 - 2016 2sic Internet Solutions GmbH Switzerland/Liechtenstein

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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. 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.

Copyleft Requirements for the Pro-ImageResizer

When you use open-source with copyleft requirements, then the license requires you to also share your work in return. 

2sxc includes a very powerful image-resizing called ImageResizer.net, created by Imazen. The developer Nathanael Jones created an amazing tool which can do a lot more than just resize images, and exists in two versions:

  1. The core-version, which is Apache 2.0 licensed. It has no copyleft requirements, but the caching is limited to about 30MB caching data. It works, it's fast, but for obvious reasons receives less love than the other version.
  2. The same core versions with awesome advanced plugins, which are AGPL licensed. These have a copyleft requirement, but are faster and way better. 

2sxc version 8.2 includes the power-edition with the better features and more performance, and the copyleft requirement. 

If you love this image resizer as much as we do, you can support Nathanael by buying a license, which frees you from the copyleft requirement. If you prefer to reep all the benefits without giving back (money / code), then you can easily replace the included image-resizer with the light edition - just download the DNN package here on Codeplex.

2serve . 2invent . 2create is 2be.