Read the LOD : Read the LOD is a grassroots Linked Open Data initiative that organizes reading-and-discussion clubs around relevant contemporary Linked Data and Semantic Web documents. Reading clubs are organized once every few months and, in the past, have covered topics such as 'Linked data notifications' and 'Aren't we better off with just one ontology?'. Meeting notes of every clubs and more information on how to join can be found on the website!
RO-Crate community : The RO-Crate community is maintaining the RO-Crate spec via github and regular gatherings. These include keeping each other up to data of new ways of application, new surrounding development, or answering open questions. Meetings are organised on a monthly basis and are open for everyone to join.