Shareware is inexpensive because it is usually produced by a single programmer and is offered directly to customers. Thus, there are practically no packaging or advertising expenses.

Note that shareware differs from public-domain software in that shareware is copyrighted. This means that you cannot sell a shareware product as your own.

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Shareware95.com 
Great site for all Win95 shareware.

Shareware Author Index
Reference site for shareware home pages on the Internet. Provides a search form for locating home pages, reviews, download sites, and registration / order forms for on-line software products by name, keyword, and computer platform.

Shareware FAQ
Collection of questions collected from the alt.comp.shareware newsgroup.

WebAttack
Contains over 1400 downloadable freeware and shareware applications for Windows 95. Each application includes a brief description.

Yahoo!'s Internet shareware page
Yahoo!'s directory of Internet shareware.

Yahoo!'s screen saver shareware page
Yahoo!'s directory of screen saver shareware.

Yahoo!'s shareware for programming languages page
Yahoo!'s directory of shareware for programming languages.

Association of Shareware Professionals
A consumer information site dedicated to the advancement of shareware.

Shareware FAQ
This is a two part FAQ regarding shareware from the alt.comp.shareware newsgroup.