Cullinet Software

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.

Cullinet Software is profiled on the APIs.io network. Tagged areas include Company, Database, Mainframe, Enterprise Software, and Application Development.

📡 Source on GitHub

0 APIs

Company Database Mainframe Enterprise Software Application Development Data Management Defunct Historical

Source (apis.yml)

aid: cullinet-software
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
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: '0.23'
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

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