Dart-Digital Business Accounting and Bookkeeping Systems. Established over 20 years ago, Dart-Digital prides itself on providing high quality, client focused, specialist Business Accounting and Bookkeeping Systems in the UK. We have the skills, products, knowledge and experience to make business accounting and bookkeeping software work for your business. As well as being to advise on other accounting and bookkeeping solutions, Dart-Digital are the official reseller of the Advanced Business Manager (ABM) software suite in the UK.