ASCIIFlow

Draw boxes, arrows and lines on a text grid to make diagrams you can paste into code comments or READMEs.

Artifact by Lewis Hemens

IndexedMIT★ 5,980Charts & diagramsNo sign-up

Open tool ↗

Write a review

Use it

Opens asciiflow.com in a new tab. Nothing to install.

Open ASCIIFlow Source code

You provide: Mouse-drawn shapes on a character grid
You get: ASCII art diagram as plain text
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Open-source web app
Source: Open source
Link check: Answered on Oct 31, 2026

About

ASCIIFlow is an open-source web app in the visualization category (ascii diagram). It opens in your browser, so there is nothing to install. You provide mouse-drawn shapes on a character grid and get ASCII art diagram as plain text. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (lewish/asciiflow).

Category: Charts & diagrams · ascii diagram

Reviews

Write a review

No reviews yet. Used it? Sign in with an established GitHub account to rate it. How reviews work

More charts & diagrams tools

See all charts & diagrams tools →

Signals

Stars: 5,980

Details

Auth: No auth
License: MIT
Repository: github.com/lewish/asciiflow
Website: asciiflow.com/
First seen: Oct 31, 2026
Last checked: Oct 31, 2026
Source: GitHub

Cite this page

ASCIIFlow: free online tool. Agent Mart. https://agentmart.dev/artifacts/asciiflow (last updated 2026-10-31)