Snowdrop Logs Fast Growth Payroll World, January 2005 Payroll and HR software specialist Snowdrop Systems has ranked Number 40 in the 2004 Deloitte Technology Fast 50, a ranking of the 50 fastest growing technology companies in London and South East. This is the second year running that Snowdrop has been listed. Rankings are based on average percentage revenue growth over five years, from 1999-2004. Snowdrop grew 165% during this period, it reported.