ERP/CMS for Small Business IT consultants

Serge asks: "In my IT-consultancy-network-engineer job, where I visit several small business customers, I've been looking for some software to extensively manage resources I have on our customers. Currently, the system sucks. We write reports in Microsoft Word, draw network schemes in Visio, export offers to PDF, and so on, and stack it all together on a nice Windows file server in a per customer directory structure. So much for the automation aspect of Information Technology. My ideal app would be accessible online and offline (I travel with my laptop), I would document a log on every network object I work on, I could pull a query on all those logs from one day to give a daily report to the customer, I could input my working hours to bill later on, it would be integrated with our helpdesk software and would manage each customer's to-do list. The sky is the obviously limit. So, what does Slashdot do to fully handle this information ERP issue?"