Mac Sequence Diagram makes it incredibly easy to create UML 2.0 style sequence diagrams, using nothing more than plain text (and a sprinkling of emoji). It supports :- ? Participants ? Signals ? Nested Interaction Frames ? Nested Activation Boxes ? Found signals ? Lost signals ? Multiple signal arrow line styles ? Multiple signal arrow head styles ? Export PDF ? Export PNG ? Export SVG ? Syntax Highlighting in Diagram Text Editor ? Error highlighting ? Canvas zoom up to 14x ? Collapsable Diagram Editor ? Light & Dark modes ? Keyword Auto-Completion ? Participant name Auto-Completion ? Version Control Friendly File Format And so much more. Feedback, issues and suggestions are welcomed. e: MacSequenceDiagram@MikeOsoft.co.uk