IT Consulting Software Management Suite

I am looking for a management software that is designed for consultants, rather than IT personnell in enterprise or large companies. What I am seeking is an all-in-one solution that handles service reports, asset management, contact management, etc. For days now I am browsing through the Internet gathering information about what is available, but haven’t been able to find anything suitable. Yes, there is BMC Remedy, or Track-IT, or QuickBase, but these solutions are designed for larger companies, not for managing SMB clients for consulatnts. Any help is very much appreciated.