Alternatives to Gaphor
Modelling tool for UML, SysML, C4 and RAAML diagrams. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Gaphor
Modelling tool for UML, SysML, C4 and RAAML diagrams.
Replacements
Listings that take over the same core job as Gaphor.
PlantUML
Generates UML and architecture diagrams from text descriptions.
PlantUML generates UML and architecture diagrams from text instead of a graphical model, and requires Java plus Graphviz for some diagram types.
Mermaid
Generates diagrams from Markdown-like text.
Mermaid draws diagrams from Markdown-like text that GitHub and GitLab render natively, but it keeps no shared model and gives limited layout control.
Similar software
Related functionality, not a direct replacement.
Docusaurus
React-based static site generator built for documentation sites.
MkDocs
Static site generator that builds documentation sites from Markdown.