In June 2015, Pocket integration was added as a default feature to the Mozilla Firefox web browser, via a toolbar button and link to a user's Pocket list in the bookmarks menu. The integration was controversial, as users displayed concerns for the direct integration of a proprietary service into an open source application, and that it could not be completely disabled without editing advanced settings, unlike third-party extensions.[9] A Mozilla spokesperson stated that the feature was meant to leverage the service's popularity among Firefox users and clarified that all code related to the integration was open source.[10][11] The spokesperson added that "[Mozilla had] gotten lots of positive feedback about the integration from users".[10]