Dapper

Dapper was an advertising-technology and web-data company founded in 2006 by Jonathan Aizen and Eran Shir, seed-funded by Accel. It ran two surfaces: Dapper Ads, an intent-driven dynamic-ad product that pulled live product and inventory data from an advertiser's own site into targeted creative without IT integration; and open.dapper.net (the "Dapp Factory" / Dapper: The Data Mapper), a hosted tool that turned any web page into structured feeds, web services and widgets — XML, RSS, JSON, YAML, CSV, iCalendar, Google Gadgets, Netvibes modules and image loops — effectively letting anyone "create an API for any site" before providers published their own. Dapper was acquired by Yahoo! in 2010 and both surfaces were shut down; dapper.net now resolves to Yahoo nameservers with no host, and open.dapper.net no longer resolves. There is no live API, developer portal, or documentation to enrich.

Dapper is profiled on the APIs.io network. Tagged areas include Company, Advertising, AdTech, Web Scraping, and Data Extraction.

📡 Source on GitHub

0 APIs

Company Advertising AdTech Web Scraping Data Extraction Mashups Defunct Acquired

Resources

Company 1

The organization behind the API

InvestorProfile

InvestorProfile

Other 2

Properties that don't map to a standard resource type

Archive

Source (apis.yml)

aid: dapper
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/dapper.png
name: Dapper
description: 'Dapper was an advertising-technology and web-data company founded in 2006 by Jonathan Aizen and Eran Shir, seed-funded
  by Accel. It ran two surfaces: Dapper Ads, an intent-driven dynamic-ad product that pulled live product and inventory data
  from an advertiser''s own site into targeted creative without IT integration; and open.dapper.net (the "Dapp Factory" /
  Dapper: The Data Mapper), a hosted tool that turned any web page into structured feeds, web services and widgets — XML,
  RSS, JSON, YAML, CSV, iCalendar, Google Gadgets, Netvibes modules and image loops — effectively letting anyone "create an
  API for any site" before providers published their own. Dapper was acquired by Yahoo! in 2010 and both surfaces were shut
  down; dapper.net now resolves to Yahoo nameservers with no host, and open.dapper.net no longer resolves. There is no live
  API, developer portal, or documentation to enrich.'
url: https://raw.githubusercontent.com/api-evangelist/dapper/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
x-status: defunct
x-acquired-by: Yahoo!
x-acquired-year: 2010
x-tier: stub
x-tier-reason: defunct-no-api-surface
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Advertising
- AdTech
- Web Scraping
- Data Extraction
- Mashups
- Defunct
- Acquired
apis: []
common:
- type: InvestorProfile
  name: Accel portfolio profile
  url: https://www.accel.com/companies/dapper
- type: Archive
  name: dapper.net (archived 2010, site no longer live)
  url: https://web.archive.org/web/20100601000000/http://www.dapper.net/
- type: Archive
  name: open.dapper.net Dapp Factory (archived 2010, no longer live)
  url: https://web.archive.org/web/20100601000000/http://open.dapper.net/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 0
  pass: local-v1

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