Open Source Show and Tell, an event hosted in partnership with Keen IO, invites individuals to share and learn about open source projects at the Google Launchpad in San Francisco on Friday, June 9th. This annual gathering, now in its fourth year, offers an afternoon of talks from members of the open source community, providing an opportunity for both newcomers and experienced contributors to engage in discussions and presentations. The event runs from 1-5 p.m. and includes complimentary food and drinks, with free tickets available for those interested. Attendees are encouraged to submit talks on any open source-related topic, making it a platform for diverse ideas and collaboration.