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D2 Alternatives
Similar projects and alternatives to d2
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mermaid
Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner as markdown
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C4-PlantUML
C4-PlantUML combines the benefits of PlantUML and the C4 model for providing a simple way of describing and communicate software architectures
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text-to-diagram-site
Compare syntax, layouts, outputs between languages for generating diagrams with text.
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d2-playground
An online runner to play, learn, and create with D2, the modern diagram scripting language that turns text to diagrams.
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Ferrite
A fast, lightweight text editor for Markdown, JSON, YAML, and TOML files. Built with Rust and egui for a native, responsive experience.
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NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better d2 alternative or higher similarity.
d2 discussion
d2 reviews and mentions
Posts with mentions or reviews of d2.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2026-04-15.
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Pretty Fish: A better mermaid diagram editor
I think the founder/lead developer, Alexander Wang, works at OpenAI now.
Plus, according to this comment on an issue, folks in their discord say it's not being actively maintained.
https://github.com/terrastruct/d2/issues/2735#issuecomment-4...
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Pikchr: A markup language for diagrams in technical documentation
I wonder how this does compare with D2 ( https://d2lang.com/ ) which also produces svgs
My first feeling is I find the syntax too verbose compared to D2. Plus I wonder if it solves the main problem of D2, which is the orientation of diagrams.
I'm a little biased
- Iconify: Library of Open Source Icons
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Show HN: Ferrite – Markdown editor in Rust with native Mermaid diagram rendering
Yeah, an example would be good. Tbh the examples on https://d2lang.com/ don't seem to fit the bill of a typical AWS Architecture diagrams! https://aws.amazon.com/architecture/reference-architecture-d...
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D2: Diagram Scripting Language
Coauthor of D2 here. Lately I've been noodling on the idea of expanding the animation capabilities. I think out loud a bit here, and if you have thoughts, would love to hear them:
https://github.com/terrastruct/d2/discussions/2677
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Show HN: Diagram as code tool with draggable customizations
Great project! You chose to base on Mermaid.js and that is indeed the most popular declarative diagramming library right now. A more versatile declarative diagramming approach is provided by the D2 Language [0], which may be interesting to check when it comes to supporting more complex diagram types.
[0] https://d2lang.com/
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Loop: life DWH, logical and physical models. Part 1
I use d2 to visualize the ERD diagram. It's a diagramming language that supports SQL tables and Crow's foot notation.
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D2 (text to diagram tool) now supports ASCII renders
I always liked D2 more than mermaid, except IMO, this makes grid layouts essentially useless: https://github.com/terrastruct/d2/issues/1164
Having to figure out the exact pixel widths defeats the point of these tools, at least for me.
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Mermaid: Generation of diagrams like flowcharts or sequence diagrams from text
They were working on a wasm version some time ago I believe [0]. Not sure how usable this is insofar, but it may be of interest.
[0]: https://github.com/terrastruct/d2/pull/436/files
- D2: Modern diagram scripting language that turns text to diagrams
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Stats
Basic d2 repo stats
113
24,047
9.7
about 1 month ago
terrastruct/d2 is an open source project licensed under Mozilla Public License 2.0 which is an OSI approved license.
The primary programming language of d2 is Go.
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