Please add the tools that your company uses.

Tools that Jazkarta uses

• eXtremeManagement
• Poi
  
• Trac
  
• Subversion
  

Hosting

• Server4You - $99/mo for dedicated box

• Google Docs and Spreadsheets

Phone/voice messaging

• uReach - $8/mo for 1-800 #
  
• GrandCentral - (just bought by Google)
  
• Skype -  (skype in)
• Vonage - $30/mo
  
• Asterix (evaluating open source VoIP/PBX system)
  

Customer Relationship Management (CRM)

• ZohoCRM (free for up to 3 users)
• Highrise (free for up to 2 users)

Calendars and scheduling meetings

• Time and Date - timezone calculations
  
• Google Calendar - (Google Apps)
• Darwin Calendar Server (evaluating)
• Zimbra (evaluating)
  

Screen sharing / training

• Yugma -   (Java applet - 1 to many - free)
• Bosco's ScreenShare -  (user friendly cross-platform Windows/Mac app)
• WebHuddle - (evaluating open source java web conferencing app)

Video chat

• XMeeting (formerly ohphonex)
  
• Ekiga (formerly GnomeMeeting)
  
• Microsoft Netmeeting (when you have to video conference with Windows users)
  
• Adobe Connect - (commercial with demo available)
  

Screencasts

• iShowU (35 Euro MacOSX app)
  

Conference calls

• FreeConferenceCall.com -  (record calls and turn into a podcast)
• HighSpeedConferencing.com -  (provides Skype or European call-in #s)
• Skype -  (need to buy SkypeOut credit if calling land-lines)
  

Email

• Google Apps - free for up to 25 users
  
• Zimbra (evaluating) -
  

Discussion lists

• Google Groups - (doesn't integrate with Google Apps yet)

• Quickbooks Pro for Mac - $200
  

• Bank of America Online Payroll - monthly costs if your employees don't have a Bank of America checking account. otherwise the basic service is free.