For the Windows and Mac OS X operating systems:

• Google Chrome
• Firefox
• Opera
• Internet Explorer
• Wikipedia List of Browsers
• Dialup Accelerator

For the Windows and Mac OS X operating systems:

• Mibbit
• mIRC (Windows only)
• MSN Messenger
• Yahoo
• AIM
• Trillian (Windows only)
• ICQ (Windows only)

For the Windows operating system:

• Eudora
• Incredimail
• Pegasus
• Thunderbird
• PocoMail
• Windows Live Mail
• Outlook Express
• Wikipedia List of Email Clients

For the Mac OS X operating system:

• Eudora
• Thunderbird