# c9/core

Cloud9 Core - Part of the Cloud9 SDK for Plugin Development https://c9.github.io/core/ https://c9.io

Repository: https://github.com/c9/core
Canonical: https://ross.abutalabs.com/products/c9-core
Language: JavaScript
License: NOASSERTION
License Family: other
Archived: true
Last push: 2021-01-15T08:21:50+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4226, "days_push": 2056, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2539, forks 901 (observed 2026-08-28T04:06:59.307687+00:00)

## What it is
Cloud9 v3 SDK core, a Node.js-based web IDE platform that can be self-hosted and extended with custom plugins. It lets developers build a customized browser-based IDE on top of the Cloud9 codebase.

## Use cases
- self-host a browser-based IDE on my own server
- build custom plugins to extend a web IDE
- create a tailored cloud development environment
- run an online code editor for a team workspace

## When to choose
- you want to build a custom web-based IDE on the Cloud9 codebase
- you need a self-hosted browser IDE with plugin extensibility
- you're maintaining legacy Cloud9 v3 deployments

## When to avoid
- you need a maintained, actively developed IDE
- you want a modern editor with current Node.js support
- you just need a code editor without plugin development

## Facets
- artifact type: framework
- maturity: abandoned
- function: editor, plugin-system, web-framework, developer-tools
- domain: developer-tools, text-editors, web-development
- platform: cross-platform
- tags: ide, cloud9, sdk, web-based-ide, extensibility, nodejs, web-server

## Member repositories
- c9/core (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:59.307687+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 2026-08-30T02:25:10.019261+00:00, confidence not recorded.
  - readme: https://github.com/c9/core (fetched 2026-08-28T04:06:59.307687+00:00, sha 88782269719b)
- Data as of 2026-08-30T08:39:29.467469+00:00.