Here are a few options that were suggested to me. Have you used any of them.
ZOHO CRM is a hosted CRM Software for entrepreneurs and start-ups. It has a free edition for 3 users.
Popular CRM offers a free 30 day trial
Siebel by Oracle
Bigger system probably not suited to micro business.
This system looks interesting and has more features than I even wanted. There is a page headed: – Meeting Management with Podio and GoToMeeting. I can’t really understand what it does with GoToMeeting – but I do love GoToAssist so am interested in what it may be able to do. It is free for up to 3 people. There is a discussion about integration with XERO here http://ow.ly/basMH but cannot see any mention about SAASU or ONESAAS integration. I was planning to sign up to ZOHO CRM, but this appears to have more offerings so I signed up to this solution via my Google Apps account.