Redis Labs and the “Common Clause”

So, the short version is that with the recent licensing changes to
several Redis Labs modules making them no longer free and open
source, GNU/Linux distributions, such as Debian and Fedora, are no
longer able to ship Redis Labs’ versions of the affected modules to
their users.

As a result, we have begun working together to create a set of module
forked from prior to the license change. We will
maintain changes to these modules under their original open source
licenses, applying only free and open fixes and updates.

We are committed to making these available under an open source license
permanently, and welcome community involvement.

You can find more background info here:

Source: Linux Journal