Blekko

Blekko was a web search engine founded in 2007 by Rich Skrenta, Tom Annau, and Mike Markson and launched publicly in 2010. It was best known for "slashtags" — user-applied /slashtag filters that curated and narrowed search results by category as a spam-resistant alternative to mainstream search engines — and it exposed a developer search API. Blekko was acquired by IBM in March 2015, where its technology and team were folded into the IBM Watson group and its consumer search engine was shut down. This API Evangelist profile is retained as a historical/defunct record; the company no longer operates a live website or public API (blekko.com resolves in DNS but no longer serves HTTPS).

Blekko is profiled on the APIs.io network. Tagged areas include Company, Search, Search Engines, Web Search, and Discovery.

📡 Source on GitHub

0 APIs

Company Search Search Engines Web Search Discovery Defunct Acquired

Source (apis.yml)

aid: blekko
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/blekko.png
name: Blekko
description: Blekko was a web search engine founded in 2007 by Rich Skrenta, Tom Annau, and Mike Markson and launched publicly
  in 2010. It was best known for "slashtags" — user-applied /slashtag filters that curated and narrowed search results by
  category as a spam-resistant alternative to mainstream search engines — and it exposed a developer search API. Blekko was
  acquired by IBM in March 2015, where its technology and team were folded into the IBM Watson group and its consumer search
  engine was shut down. This API Evangelist profile is retained as a historical/defunct record; the company no longer operates
  a live website or public API (blekko.com resolves in DNS but no longer serves HTTPS).
url: https://raw.githubusercontent.com/api-evangelist/blekko/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- uncork-capital
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
x-defunct-reason: acquired by IBM (March 2015); consumer search engine shut down and technology folded into IBM Watson
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Search
- Search Engines
- Web Search
- Discovery
- Defunct
- Acquired
tags_raw:
- Company
- Search
- Search Engine
- Web Search
- Discovery
- Defunct
- Acquired
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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