PulseGatePost-LLM software, agents & workflows market (since 2022)
Coverage
168,991

Apps indexed

 

Freshness
12 min ago

Last update

 

Cadence
1,528/day

7-day average

Indexed today: 1,153

PulseGate

Market catalog for public software products, models, infra, and workflow tools.

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Diagon

arthursonzogni.com·Diagramming & whiteboards

Diagon is a web-based tool that allows users to generate and edit ASCII art diagrams interactively. It supports various diagram types, including math formulas and sequence diagrams, making it useful for developers and technical writers needing text-based visuals.

FreeMIT
Web
D
Diagon preview
Visit arthursonzogni.com↗
⭐2.2k
stars
🍴77
forks
✓5
features
📅2018
since

Overview

5 features

In the Diagramming & whiteboards space, Diagon takes a focused approach. It focuses on creating ASCII art diagrams and visualizations easily without manual drawing. It is built as a consumer product for developers and technical writers. Diagon costs nothing to use. It runs on the web.

Behind Diagon is Arthur Sonzogni, and the product first shipped in 2018. Development happens publicly on GitHub with 2.2k stars. PulseGate's similarity index finds few close equivalents — Diagon occupies a relatively distinct niche. Key capabilities include ASCII diagram generation, interactive editor, and math formula support.

  • ✓ASCII diagram generation
  • ✓Interactive editor
  • ✓Math formula support
  • ✓Sequence diagrams
  • ✓Dark mode

Tags

ascii-artdiagram-generatorweb-tool

Built with & integrations

Runs on
Browser

Trust & compliance

LicenseMIT
Verified signals
✓ HTTPS✓ Free tier✓ GitHub · ★ 2.2k

Recent events

Latest indexed changes and source events

  1. IndexedJun 27, 2:31 AM

    arthursonzogni.com discovered by the PulseGate indexer

    Source: PulseGate indexerOpen ↗

Frequently asked questions about Diagon

What does Diagon do?
Diagon focuses on creating ASCII art diagrams and visualizations easily without manual drawing. It is catalogued under Diagramming & whiteboards on PulseGate.
Who is Diagon for?
Diagon is a consumer product built for developers and technical writers.
Is Diagon free?
Yes — Diagon is free to use.
What platforms does Diagon run on?
Diagon runs on the web.
Is Diagon still maintained?
PulseGate's automated liveness checks currently classify Diagon as active.
What are alternatives to Diagon?
Similar tools tracked by PulseGate include ASCII Draw, Diagram-generator, and Diagramly.ai.ASCII DrawDiagram-generatorDiagramly.ai
Who makes Diagon?
Diagon is developed by Arthur Sonzogni.
When did Diagon launch?
Diagon first shipped in 2018.

At a glance

Platforms
Web
Languages
English
Open source
Yes · ★ 2.2k
License
MIT
First seen
Jun 4, 2024
Activity
🟢 Active
Status
🟢 Active
Built for
developers and technical writers
Model
B2C
Solves
Creating ASCII art diagrams and visualizations easily without manual drawing.

Developer

Arthur Sonzogni
Team
↗ GitHub

Open source

View on GitHub →
⭐ Stars
2,210
🍴 Forks
77
Open issues
21
Last commit
1y ago
Commits 90d
0
Contributors
12
Authorship
Team
Default branch
main
Latest release
v1.1.158 · 3y ago

PulseGate index

Confidence
High · 94
Indexed
Jun 27, 2026
Lifecycle
Alive
Activity
Active
First seen
Jun 2024
Last seen
2w ago
Freshness
Unknown
Identity audit (9)
Entity ID
cmqvqwip300x8t9sl75qd2e7l
Slug
diagon-ascii-art-diagram-generator-arthursonzogni-com
Verification state
Indexed for public listing
Claim / listing state
Unclaimed · listed: yes
Index status
Included in index
Latest evidence snapshot
Jun 27, 2026
Timeline basis
Indexed-at chronology (no inferred launch/funding milestones).
Last updated
Jul 11, 2026
Canonical URL
https://diagon.arthursonzogni.com/

Similar apps

Other apps tracked under the same category.

  • ASCII Draw
    flathub.org
  • Diagram-generator
    diagram-generator.com
  • Diagramly.ai
    diagramly.ai
  • Diagram AI
    aidiagram.net
  • grafli
    mistergc.dev
  • DAGraph
    dagraph.com