Most open source software can be used in your work at Google, but we have to be careful to comply with the licenses. Besides, it's the right thing to do out of respect for our fellow coders.
Software licensed under the AGPL is NOT allowed at Google. See go/agpl for more details.
Third party code must always be kept in a separate directory from Google-owned code. This helps us comply with licenses, avoid code duplication, and patch security issues that may arise. Please see go/thirdparty for details.
If you would like to use the logos or trademarks from an external open source project, or an outside entity is asking to use our logos or trademarks, please see our trademarks policy.