• Application Servers

• JBOSS
• WebSphere
• GlassFish

• Cellular/Mobile Phones

• IPhone
• Android
• General
• Blackberry

• Database Management Systems

• MySQL
• Firebird
• PostgreSQL
• MS SQL Server
• Oracle
• DB2

• Hardware

• Hard Disks
• Computer Chips
• Monitor
• Keyboard
• Mouse
• RAM
• Processors

• Internet Browsers

• Mozilla Firefox
• Google Chrome
• Safari
• Internet Explorer
• Opera

• IT Vendors/Companies

• Google
• Microsoft
• Apple
• Oracle
• IBM
• Dell
• Sun Microsystems
• Adobe Systems
• Hewlett-Packard Company (HP)
• Intel
• Advanced Micro Devices (AMD)
• Cisco
• Open Source
• Yahoo
• Verizon Communications
• Amazon.com, Inc.

• Libraries

• OpenSSL

• Linux Distros

• Fedora
• Ubuntu
• Gentoo
• Debian
• Suse
• RedHat
• Yellow Dog
• CentOS

• Operating Systems

• Linux
• MS Windows
• MacOS X
• NetBSD
• FreeBSD
• Solaris
• OpenBSD

• Popular Websites

• Twitter.com
• YouTube.com
• Digg.com
• Monster.com

• Search Engines

• Bing
• Google Search
• Yahoo Search
• Ask.com

• Servers

• Apache Web Server
• vsftpd FTP Server

• Social Networks

• Facebook
• MySpace
• Other Social Networks
• Hi5
• Friendster
• Plaxo

• Technology

• Business
• Security
• New Feature/Release
• Software
• Development
• Marketing/Promotion
• General
• Cloud Computing
• VoIP
• Laws/Policies
• Data
• Blogging
• Advertising
• Gaming
• ISPs
• Privacy
• Clustering

• Virtualization

• VirtualBox
• VMware
• Virtual PC

• Web Development

• PHP
• Perl
• Javascript
• Web Design
• Adobe Flash
• Ruby
• Python
• Java
• AJAX
• Graphics Design

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• Big brands use Twitter to push corporate messages