Melcrum
- Global research and training for internal communicators.
- http://www.melcrum.com/

Put It In Writing
- Writing company business newsletters.
- http://www.put-it-in-writing.com/

360° Newsletter - Jack Morton Worldwide
- Bimonthly newsletter about branding, marketing, and corporate communications.
- http://www.jackmorton.com/360/frontpage/default.asp

Ivy Sea Online
- A wide range of free articles on communication within and from an organization. Organizational communication articles and tips.
- http://www.ivysea.com/pages/a_and_t.html

The Editorial Eye
- Dozens of articles relevant to corporate editors and writers. Topics include today's usage dilemmas, style sheets, trademark controversies, web editing, estimating editorial jobs, and software.
- http://www.eeicommunications.com/eye/

International Association of Business Communicators.
- A worldwide learning community for professionals committed to improving the effectiveness of organizations through strategic communication. Articles, conferences, career opportunities.
- http://www.iabc.com

The Cluetrain Manifesto
- A strongly reasoned plea for corporate communicators to speak with a human voice.
- http://www.cluetrain.com

CompanyNewsletters.com
- Large collection of articles on how to write and produce company newsletters, whether a traditional printed or online version.
- http://companynewsletters.com/index.html