nomnoml Alternatives

Mermaid

Since 2014

Diagrams as text: flowcharts, sequences, ER.

Switch for Web, Markdown.

More about Mermaid · 8 alternatives · Medium to switch

PlantUML

Since 2009

Text diagrams, especially UML.

Switch for Local, Web.

More about PlantUML · 8 alternatives · Medium to switch

Excalidraw

Since 2020

Hand-drawn style whiteboard.

Same price, platforms, and license as nomnoml.

More about Excalidraw · 8 alternatives · Low to switch

diagrams.net

Since 2005

Draw.io: free general diagram editor.

Switch for Web, Desktop.

More about diagrams.net · 8 alternatives · High to switch

D2

Since 2022

Modern text-to-diagram language.

Switch for Local.

More about D2 · 8 alternatives · Medium to switch

Graphviz

Since 1991

Classic graph layout from DOT files.

Switch for Local.

More about Graphviz · 8 alternatives · Medium to switch

Lucidchart

Since 2010

Collaborative diagram suite for teams.

Switch for Freemium instead of Open source · Proprietary.

More about Lucidchart · 8 alternatives · High to switch

Structurizr

Since 2014

C4 architecture diagrams as code.

Switch for Freemium instead of Open source · Proprietary.

More about Structurizr · 8 alternatives · High to switch