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There's thread on stackoverflow about this https://stackoverflow.com/questions/5524046/is-telerik-extensions-for-asp-net-mvc-free

It says that it is ok for internal site, but I think it is still not clear (also in faq notice about internal site usage is gone I think).

They say, as long as website is internal, you should be ok with open source license, but

1) Can I use it for site, that has closed community, I mean only logged in people will use telerik components?

2) Can I use only for site's administration part, that means that only internal staff will access it?

UPDATE: It looks like same question (same license type) - Using GPL libraries without modification on a commercial website, do I need to make my source code available?, but answers are completely different?

UPDATE2: I don't wish to in any way distribute site's code.

Community
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Giedrius
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3 Answers3

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For most situations, AGPL is the only GPL license that requires releasing the source code of hosted web applications. Under vanilla GPLv2, if you're not distributing the modified and compiled binaries to end users you do not need to release the source code. You're not distributing the software, you're allowing remote access to it.

pdubs
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If you are developing open-sourced software you may use the free version. If you don't want to (or can't) then you will need a paid license.

Matthew Whited
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From the telerik website

To support the Open Source community, we are providing the Telerik Extensions for ASP.NET MVC with the widely adopted GNU GPLv2 license. This option is appropriate for developers creating Open Source applications under a license compatible with GPLv2.

This means you can use it for free if and only if you are developing Opensource application. Or else you should always buy the commercial license.

For example NopCommerce uses the telerik controls for free since its an opensource application

Pankaj Upadhyay
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