Graphviz
Ranked 6 of 11 diagram tools by recommenders
Free graph layout software that people trust for automatic diagram layout; the most common caveat is that the layout engine decides where things go.
Free graph layout software that people trust for automatic diagram layout; the most common caveat is that the layout engine decides where things go.
21 people gave an opinion
- recommend it
- 13
- criticize it
- 8
- approval share
- 62%
Recommended in 6 of 13 months
- November 2025: recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: recommended
- March 2026: not recommended
- April 2026: recommended
- May 2026: recommended
- June 2026: not recommended
- July 2026: recommended
- August 2026: not recommended
- September 2026: recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 13 people recommend itNeeds 10 or more, met.
- 1.6 recommenders for every criticNeeds 2 to 1 or better, not met.
- Recommended in 6 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Produces better layouts than alternatives
“nothing else seems to produce layouts nearly as good as dot”
Comment from 17 Sep 2026 in “Mastering Layout Engines in Graphviz: Dot vs. Neato vs. Twopi vs. Circo” “Graphviz/dot is good for this”
Comment from 18 May 2026 in “Show HN: Files.md – open-source alternative to Obsidian” Text-based diagrams that AI models handle well
“I went with text-based graph description languages and haven't looked back”
Comment from 17 Sep 2026 in “I hate you Microsoft” “claude code is a lot better at graphviz than mermaid”
Comment from 5 Nov 2025 in “Codemaps: Understand Code, Before You Vibe It” “I'd heavily bet that the model's performance, and goals of the developer, would in fact be better served by using a framework like GraphViz built for the job”
Comment from 7 Feb 2026 in “Software Engineering Is Back” Mature tool built for diagrams
“existing, mature ones designed for humans”
Comment from 8 Jul 2026 in “Show HN: Microsoft releases Flint, a visualization language for AI agents” “I'd heavily bet that the model's performance, and goals of the developer, would in fact be better served by using a framework like GraphViz built for the job”
Comment from 7 Feb 2026 in “Software Engineering Is Back”
What people warn about
Each mark is one comment
Hard to control element positions
“ended up always back to something like Draw.io, because I couldn't get things positioned how I wanted”
Comment from 27 Sep 2026 in “Show HN: Reladraw – A diagram language where you decide where to place things” “Always struggle with Graphviz tweaking my carefully planned positions.”
Comment from 27 Sep 2026 in “Show HN: Reladraw – A diagram language where you decide where to place things” “with .dot, the layout engine decides where things go”
Comment from 26 Sep 2026 in “Show HN: Reladraw – A diagram language where you decide where to place things” - Comment from 27 Sep 2026 in “Show HN: Reladraw – A diagram language where you decide where to place things”
Poor layouts for large graphs
“none of the layout engine are very good, they essentially apply the same algorithm to all the things”
Comment from 17 Sep 2026 in “Mastering Layout Engines in Graphviz: Dot vs. Neato vs. Twopi vs. Circo” “The syntax is pedantic and the resulting output is pretty ugly for all but the simplest graphs.”
Comment from 17 Sep 2026 in “Mastering Layout Engines in Graphviz: Dot vs. Neato vs. Twopi vs. Circo” “you're still essentially stuck with graphviz prerendering for large enough graphs”
Comment from 21 Jan 2026 in “Show HN: ChartGPU – WebGPU-powered charting library (1M points at 60fps)” Mainly designed for static diagrams
“those tools are mainly built to render static diagrams”
Comment from 26 Sep 2026 in “Show HN: Whiteboard (YC W26) – An open-source IDE for thoughtful software design” “Both suck at being any good for rendering diagrams from readable structured text.”
Comment from 9 Jul 2026 in “Show HN: Microsoft releases Flint, a visualization language for AI agents”
Other diagram tools people recommend
The four most recommended other diagram tools, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Mermaid | 93 | 46 | 67% | 12 | — | Approved |
| Reladraw | 28 | 7 | 80% | 1 | — | — |
| SQL to ER diagram tool | 27 | 1 | 96% | 2 | — | — |
| D2 diagram language | 21 | 6 | 78% | 6 | — | Approved |
| GraphvizThis page | 13 | 8 | 62% | 6 | — | — |
What people said
23 of the 24 comments that mention it, newest first. Each links to the original comment.
“recent versions of Graphviz give untrusted input to a whole insane rat's nest of code”
“some of those don't give the agent control over what the diagram looks like (Graphviz, Mermaid)”
“ended up always back to something like Draw.io, because I couldn't get things positioned how I wanted”
“Always struggle with Graphviz tweaking my carefully planned positions.”
“with .dot, the layout engine decides where things go”
“those tools are mainly built to render static diagrams”
“I went with text-based graph description languages and haven't looked back”
“This guide should have use browser version (wasm etc) of GraphViz”
“none of the layout engine are very good, they essentially apply the same algorithm to all the things”
“nothing else seems to produce layouts nearly as good as dot”
“graphviz is way more relevant than doing it by hand in drawio”
“The syntax is pedantic and the resulting output is pretty ugly for all but the simplest graphs.”
“Things I missed in original graphviz dot”
“Both suck at being any good for rendering diagrams from readable structured text.”
“existing, mature ones designed for humans”
“Graphviz/dot is good for this”
“that isn't Graphviz, no offense”
“Solves some problems that were hard to work around with GraphViz”
“Visualize graphs using Graphviz – super visual and satisfying”
“You can even use graphviz/Mermaid/PlantUML for visual agentic workflows”
“I'd heavily bet that the model's performance, and goals of the developer, would in fact be better served by using a framework like GraphViz built for the job”
“you're still essentially stuck with graphviz prerendering for large enough graphs”
“claude code is a lot better at graphviz than mermaid”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.