Like everyone here, i feel like i'm going to build the next billion dollar business.<p>I'm looking to work in the institutional space, so i'll be dealing with global banks, corporates, etc.<p>What do you recommend to help with billing, keep track of expenses, etc...<p>Is there a one stop shop that also does cost accounting, etc... so i can over time really measure my expenditure on projects/clients and so on?It would be great if someone also had the ability to review investment performance of projects to actually revenue.<p>Does such a service exist? Or you guys going to create one for me?