
Think: Markdown for diagrams.īut while it’s fairly easy (and rewarding!) to create sequence diagrams using text files, it still takes effort. But accordance with the “everything as code” movement, tools like PlantUML and Mermaid have kept sequence diagrams relevant by providing a fairly basic text language that can be used to generate sequence diagrams. Historically, creating a sequence diagram required specialized software. And they are one of the best tools for developers and technical non-developers (like engineering managers and product managers) to use when discussing code design. Their inherent structure - objects flowing across the page, time flowing down the page - is intuitive and easy to learn.

Sequence diagrams are frequently described as "the best part of UML".
