Off the shelf software for accountants

I am looking for an off the shelf accounting software that can help organise accounting records of a varied clientele. Need advice/opinions on the best one around. Looking into offering accounting and book keeping services.

QuickBooks or Sage. First find your way into QuickBooks then you can consider any other software.

Which version of QuickBooks are you referring to? i.e Home or accountant’s edition?

Accountant Edition definitely. But you can choose any during installation.