PlantUML is a component that allows you to quickly write:

• Sequence diagram

  @startuml
  Alice -> Bob: Authentication Request
  Bob --> Alice: Authentication Response
  Alice -> Bob: Another authentication Request
  Alice <-- Bob: Another authentication Response
  @enduml

  

• Usecase diagram

• Class diagram

• Object diagram

• Activity diagram (here is the legacy syntax)

• Component diagram

• Deployment diagram

• State diagram

• Timing diagram

GitHub - plantuml/plantuml: Generate diagrams from textual description
Official Javadoc Documentation: Overview (plantuml 1.2024.7beta2 API)

A fast text processor & publishing toolchain for converting AsciiDoc to HTML5, DocBook & more.

AsciiDoc is a plain text markup language for writing technical content. It’s packed with semantic elements and equipped with features to modularize and reuse content. AsciiDoc content can be composed using a text editor, managed in a version control system, and published to multiple output formats.

If you need to convert files from one markup format into another, pandoc is your swiss-army knife. Pandoc can convert documents in markdown, reStructuredText, textile, HTML, DocBook, LaTeX, MediaWiki markup, TWiki markup, OPML, Emacs Org-Mode, Txt2Tags, Microsoft Word docx, EPUB, or Haddock markup to

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Ebooks: EPUB version 2 or 3, FictionBook2
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Page layout formats: InDesign ICML
Outline formats: OPML
TeX formats: LaTeX, ConTeXt, LaTeX Beamer slides
PDF via LaTeX
Lightweight markup formats: Markdown, reStructuredText, AsciiDoc, MediaWiki markup, DokuWiki markup, Emacs Org-Mode, Textile
Custom formats: custom writers can be written in lua.

Create awesome docs the easy way!

docToolchain is a collection of scripts that makes it easy to create and maintain powerful technical documentation. Built on best-of-breed open source technologies, we deliver the best docs toolchain so you don’t have to.