Many FOSS projects require Contributor License Agreements (CLA) for all contributors. Even though we have many common FOSS software licenses, it seems that these projects have to create their own CLAs.
Are there any standard/generic/reusable CLAs?
Open Source Stack Exchange is a question and answer site for people organizing, marketing or licensing open source development projects. It only takes a minute to sign up.Sign up to join this community
From Opensource FAQ:-
For more about contributor agreements in general, and some examples, see civiccommons.org/Contributor_Agreements. See also the Project Harmony, "...a community-centered group focused on contributor agreements for free and open source software (FOSS)."
At How to Accept Code and Documentation Contributions Legally you can find CLA examples
And of course the Linux http://developercertificate.org/ the simplest and best of all IMHO