# klange/nyancat

Nyancat in your terminal, rendered through ANSI escape sequences. This is the source for the Debian package `nyancat`.

Repository: https://github.com/klange/nyancat
Canonical: https://ross.abutalabs.com/products/nyancat
Homepage: http://nyancat.dakko.us/
Language: C
License Family: other
Topics: nyan-cat, poptart-cat, terminal, telnet
Last push: 2024-04-19T00:05:30+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5390, "days_push": 867, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- 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 1584, forks 144 (observed 2026-08-28T04:05:07.351746+00:00)

## What it is
A small C program that renders the Nyan Cat (Poptart Cat) animation in your terminal using ANSI escape sequences. It can run standalone or serve the animation over telnet via inetd, and is packaged in many Linux and BSD distributions.

## Use cases
- render nyan cat animation in my terminal
- fun terminal easter egg to show coworkers
- host a nyan cat telnet server
- test terminal ANSI color and escape sequence support
- novelty command-line toy for a demo

## When to choose
- you want a lightweight, dependency-free terminal animation toy
- you need a simple telnet/inetd demo service
- you want to verify ANSI escape sequence rendering across terminals

## When to avoid
- you need a serious terminal UI framework or TUI library
- you want a maintained project with active development
- you need a license other than NCSA or strict license compliance

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: cli, terminal-ui, animation
- domain: entertainment, developer-tools
- platform: windows, bsd, cli, cross-platform
- tags: nyan-cat, ansi-escape-sequences, telnet-server, novelty, c, command-line, linux, macos

## Member repositories
- klange/nyancat (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:07.351746+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 2026-08-30T03:55:57.754646+00:00, confidence not recorded.
  - readme: https://github.com/klange/nyancat (fetched 2026-08-28T04:05:07.351746+00:00, sha aa2984205a8f)
  - homepage: http://nyancat.dakko.us/ (fetched 2026-08-29T11:26:22.805275+00:00, sha 8ad0e1bf80f7)
- Data as of 2026-08-30T08:39:29.467469+00:00.