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Quantum Link

defunct American technology company

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 9, 2026
Entity authorityQ7268995
Source-derived summary

Quantum Link (or Q-Link) was an American and Canadian online service for the Commodore 64 and 128 personal computers that operated starting November 5, 1985. It was operated by Quantum Computer Services of Vienna, Virginia, which later became America Online.

In October 1989 the service was renamed America Online, and made available to users of PC systems as well. The original Q-link service was terminated on November 1, 1994, in favor of the America Online brand.

The original Q-Link was a modified version of the PlayNET system, which Control Video Corporation licensed. Q-Link featured electronic mail, online chat (in its People Connection department), public domain file sharing libraries, online news, and instant messaging using On Line Messages (OLMs). Other noteworthy features included multiplayer games like checkers, chess, backgammon, hangman, and a clone of the television game show Wheel Of Fortune called Puzzler; and an interactive graphic resort island, called Habitat during beta-testing, then renamed Club Caribe.

In October 1986, QuantumLink expanded their services to include casino games such as bingo, slot machines, blackjack and poker in RabbitJack's Casino; and RockLink, a section about rock music. The software archives were also organized into hierarchical folders and expanded.

In November 1986, the service began offering to digitize users' photos to be included in their profiles, and started an online auction service.

Editorial summary

Begin with the source’s own compact description: “Quantum Link” is defunct American technology company. The dossier treats that line as a proposition to test through Quantum, Link and defunct, not as a finished interpretation.

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current lead gives the account dated anchors—1985, 1989, 1994, 1986—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Quantum, Link and defunct is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “defunct American technology company” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Jun 9, 2026. The linked authority identifier is Q7268995. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1985, 1989, 1994 and 1986.

Critical limits

Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.

Best used for
  • Current terminology
  • Classification context
  • Finding cited technical literature
Verify next

Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Quantum Link”, its source revision and the description used here.
  2. Expand the search: follow Quantum Link primary sources, Quantum Link archive and Quantum research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Quantum Link”?
  2. Is the terminology current, historical or disputed?
  3. Which observation, specimen, dataset or publication supports the account?
Subject index

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Source & attribution

This entry incorporates text from Quantum Link” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.