• e-mail

• telephone utilities

Groupware is sometimes called workgroup productivity software.

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Web Conferencing Software Finder - Compare web conferencing software using Capterra's free and comprehensive Web Conferencing Software Finder.

Tom's CSCW and Groupware Index 
Extensive collection of links to sites related to Computer-Supported Cooperative Work (CSCW), groupware and teamware.

DeLiberation product page
The DeLiberation Consultative Framework is a service that supports group discussions via e-mail. This site provides links to a press release, product information, and customer success stories.

Yahoo!'s groupware company page
Yahoo!'s directory of groupware companies.

Yahoo!'s groupware page
Yahoo!'s directory of groupware.

Computer conferencing software references
Offers an overview on choosing web based conferencing software, as well as links to resources for web conferencing software and systems, product reviews, articles, and related resource links.

Groupware research group
Home page of the University of Calgary's GroupLab project, a research group focusing on Computer-Supported Cooperative Work (CSCW), groupware, and HCI. Their site offers information on their projects and research activities, publications, participants, and contact information.

NCSA's Habanero project
Describes the Habanero project at NCSA. Habanero is new version of groupware-based applications whose object-sharing framework enables software developers to easily transform single-user applications into multi-user, shared applications.