The QIC-40 and QIC-80 standards are sometimes referred to as floppy tape standards because they are designed to use a personal computer's existing floppy disk drive controller instead of requiring a customized controller.

The newest set of QIC standards are based on the Travan technology developed by 3M.

The various QIC standards are controlled by a consortium of manufacturers called the Quarter-Inch Cartridge Drive Standards, Inc. The term QIC, therefore, is used to refer both to the type of tape and to the standards-producing organization.

QIC and DAT Tape Technology Overview 
Outlines the QIC and DAT (helical-scan) tape technologies and associated standards. Includes graphics, diagrams and an integrated glossary. This page is from "The PC Technology Guide."

Minicartridge Drive Classes
Useful table that shows the various QIC standards along with capacity, data density, tracks per inch, and other specifications related to each standard.

QIC association site
QIC is an international trade association dedicated to promoting use of quarter-inch tape technology and products. Their site provides links to a buying guide, benefits, trends, list of manufacturers, downloadable standards, schedule of meetings, and membership information.

QIC Standards
Complete list of QIC standards, with the specifications for each standard.

Quarter-Inch Cartridge Drive (QIC) home page
QIC is an international trade association dedicated to promoting use of quarter-inch tape technology and products. Their home page provides links to news items, a marketplace, technology issues, industry direction, and standards.