TeamDirection, Inc.
2
Shareware
Can import all your Basecamp Todo Items into Microsoft Outlook.
99
Veign
71
Freeware
A tool to let you decide which Outlook-blocked attachments are safe to open.
Wang Sweden AB
Simplify the process of meeting invitation in Outlook and resource selection.
Plaxo, Inc.
28
Freeware
It is a nice and easy to manipulate program with many features.
10
Google, Inc.
2,207
Freeware
Use Microsoft Outlook 2003, 2007, 2010, 2013 and 2016 with G Suite.
BPC Software, LLC
4
Shareware
Outlook to Outlook transfers your email, address book etc. to your new PC.
RemoteCalendars
13
Open source
RemoteCalendars is a COM-.NET Add-in for Outlook 2003/2007, written in C#.
87
OutlookCloud
6
Shareware
It is a small add-in program for Microsoft Outlook 2003, 2007 and 2010.
Totalidea Software New Zealand Ltd.
6
Backup your Outlook 2003 and Outlook 2007 data and settings easily.
67
SDMD GmbH
25
Freeware
It is a freeware addin for Microsoft Outlook 2003 and Microsoft Outlook 2007.
1
Google, Inc.
8
Freeware
Google Apps Sync for Microsoft Outlook allows you to use Microsoft Outlook 2003.
Daniele Tiles,Gabriele
1
Freeware
It's a simple COM-.NET plug-in created for Outlook 2003.
2
BitLaboratory
Attractive Outlook 2003 style navigation bar and header.
Nicolas Sivridis
4
Freeware
Jello Dashboard is a Getting Things Done solution for Microsoft Outlook 2003.
Codejock Software
1
Commercial
Provides Windows developers with a sophisticated Outlook 2003 style Report.
43
Google, Inc.
4,237
Freeware
Use Microsoft Outlook 2003, 2007, 2010, 2013, and 2016 effectively with G Suite.