# casparwylie/cascii-core

A web-based ASCII and Unicode diagram builder written in vanilla Javascript

Repository: https://github.com/casparwylie/cascii-core
Canonical: https://ross.abutalabs.com/products/cascii-core
Homepage: https://cascii.app
Language: JavaScript
License Family: other
Topics: ascii, javascript, unicode, 2d, diagrams, rendering
Last push: 2026-02-17T21:01:02+00:00

## Health v2 (maintenance only)
Score: 52/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 68, release rhythm 40, longevity 38
- inputs: {"age_days": 543, "days_push": 197, "days_rel": 525, "gap_med": 1.5, "n_releases_24m": 5}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1174, forks 25 (observed 2026-08-28T04:03:52.300020+00:00)

## What it is
Cascii is a web-based ASCII and Unicode diagram builder written in vanilla JavaScript with zero dependencies. It runs entirely in the browser by opening a single HTML file, with an optional hosted version at casci.app.

## Use cases
- draw ascii diagrams in the browser
- create unicode box diagrams for documentation
- build flowcharts using plain text characters
- make ascii art architecture diagrams
- generate text-based diagrams for markdown files
- sketch system diagrams without installing software

## When to choose
- you need dependency-free, offline-capable diagramming in a single HTML file
- you want ASCII/Unicode output that renders in plain text, READMEs, or code comments
- you prefer lightweight tools over heavyweight diagram apps like draw.io

## When to avoid
- you need image exports (PNG/SVG) or polished vector graphics
- you want collaborative real-time editing or cloud storage out of the box
- you need a full-featured diagramming tool with shape libraries and templates

## Facets
- artifact type: application
- maturity: active
- function: graphics, editor, gui
- domain: web-development, developer-tools, documentation
- platform: browser, cross-platform
- tags: ascii-art, unicode-diagrams, diagram-builder, vanilla-javascript, no-dependencies, text-diagrams, flowcharts, diagrams, web-server

## Member repositories
- casparwylie/cascii-core (main) score 52

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:52.300020+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:28:17.209219+00:00, confidence not recorded.
  - readme: https://github.com/casparwylie/cascii-core (fetched 2026-08-28T04:03:52.300020+00:00, sha b076b5c402cf)
  - homepage: https://cascii.app (fetched 2026-08-29T12:33:20.509267+00:00, sha addf07f2df9f)
- Data as of 2026-08-30T08:39:29.467469+00:00.