This reminds me a lot of https://github.com/tpatel/OpenSequenceDiagrams.js https://github.com/tpatel/OpenSequenceDiagrams.js, which was designed to be collabora

This reminds me a lot of https://github.com/tpatel/OpenSequenceDiagrams.js https://github.com/tpatel/OpenSequenceDiagrams.js, which was designed to be collaborative (eg, https://thefiletree.com/demo/diagram.sequence https://thefiletree.com/demo/diagram.sequence). It seems way more streamlined, produces more beautiful results, and probably could be made collaborative as well. Edit: I made a realtime collaborative plug, here is an example: https://thefiletree.com/espadrine/sequence.sequence https://thefiletree.com/espadrine/sequence.sequence However, the syntax is not as extended, it seems.