Microsoft just released a preview of the Dynamics CRM 4.0 Mobile Express software. It’s available at Microsoft’s Connect website. This is the web based version that’s supposed to work on most web-enabled mobile phones.

For a Windows Mobile version Microsoft partnered with TenDigits to jointly develop one.

TenDigits also makes a Blackberry mobile version for Microsoft Dynamics CRM

Several other companies make mobile device software for Microsoft Dynamics CRM including:

• CWR Mobility has a Windows Mobile version called Mobile CRM.
• c360 makes a Windows Mobile version for Dynamics CRM 4.0 which appears to be licensed from CWR Mobility
• Logotec has Mobile@Connector which is also Windows-based.