Material Gallery was a collaboration tool for UI designers, optimized for Google's Material Design, with mobile preview apps and a Sketch plugin. Launched May 8, 2018; shut down December 16, 2021 — it lived 3 years. One of 32 Google products killed in 2021. https://web.archive.org/web/20230706151910/https://support.google.com/materialgallery/answer/11044972 Data: Killed by Google (killedbygoogle.com, MIT).