Cloud accounting platform — strong in UK, Australia, NZ. The QuickBooks-competitor of choice outside the US.
From Wikipedia
Xero Limited is a New Zealand technology company that provides cloud-based accounting software for small businesses. The company has offices in New Zealand, Australia, the United Kingdom, the United States, Canada, South Africa and Singapore. Xero's products are based on the software-as-a-service model and sold by subscription, based on the type and number of entities managed by the subscriber. The products are used in over 180 countries.