AnnoTate is Tate and Zooniverse’s online crowdsourced transcription tool. Since 2015, the public have been using it to help decipher the writing found in over 17,000 items from artists’ archives. In exploring these letters, diaries and sketchbooks through transcription, participants gain rich insights into the personal lives of artists, discover untold stories, explore social histories, and encounter artwork situated in practice. In turn, AnnoTate users help to produce full transcripts that will appear on the Tate website. Other organisations can get involved too: the code for AnnoTate is produced with an Apache software license, and freely available on github.