aid: cullinet-software
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cullinet-software.png
name: Cullinet Software
description: Cullinet Software (formerly Cullinane Database Systems) was a database and application
  software company based in Westwood, Massachusetts, best known for the IDMS/IDMS-DB mainframe database
  management system, the IDD data dictionary, and the ADS/Online application development environment
  for IBM mainframes. Backed by Battery Ventures, Greylock, and Morgenthaler Ventures, it was one of the
  first software companies to go public (1978) and was acquired by Computer Associates (CA) on June 30,
  1989. The company is defunct and publishes no developer portal, API, or documentation surface today;
  this record is retained as a historical portfolio-graph node with no enrichable API artifacts.
url: https://raw.githubusercontent.com/api-evangelist/cullinet-software/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- battery-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Database
- Mainframe
- Enterprise Software
- Application Development
- Data Management
- Defunct
- Historical
x-status: defunct
x-acquired-by: computer-associates
x-acquired-date: '1989-06-30'
x-no-api-surface: true
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence