Internet-related prefixes such as e-, i-, cyber-, info-, techno- and net- are added to a wide range of existing words to describe new, Internet- or computer-related flavors of existing concepts, often electronic products and services that already have a non-electronic counterpart. The adjective virtual is often used in a similar manner.

Cyber- is derived from "cybernetic", from the Greek κυβερνητικός 'steersman'. Examples: cyberspace, cyberlaw, cyberbullying, cybercrime, cyberwarfare, cyberterrorism, cybersex, and cyberdelic. It is commonly used for policies and politics regarding computer systems and networks (as in the above cases), but also for information technology products and services. Further examples:

E-, standing for electronic, is used in the terms e-mail, e-commerce, e-business, e-banking, e-sports, e-paper, e-cigarette, e-car, e-girl, e-reservation, and e-book.

The lowercase initial e prefix was used as early as 1994 by eWorld, Apple's online service.

i-, standing for internet, was used as early as 1994 by iVillage, an internet community site by and for women. More recent examples include the BBC's iPlayer, and Google's former iGoogle service. It has even been used by companies not in the IT sector for their websites, such as Coca-Cola's now-defunct icoke.com.

Apple Inc. is especially connected to the i- prefix. They first employed it for the iMac line of computers starting in 1998, and have since used it in many of their other product names, including iCal, iSync, iChat, iBook, iDVD, iLife, iMessage, iPod (and iPod Socks), iSight, iPhone, iWeb, iTunes, iCloud, and others. They have said it stands for "Internet".

Promotional materials for the 2004 film I, Robot, inspired by Isaac Asimov's short-story collection of the same name, utilized a lowercase i as a cultural reference to the rising popularity at that time of the prefix in product names.

The letter "i" was also used in the popular Nickelodeon show iCarly, as that show primarily uses the internet as its main theme, and to parodize the fact that Apple uses "i-" in almost all its products.^{[citation needed]}