Providing secure, web-based rota and volunteer management services to charities (and especially helpline charities) since 2002, Three Rings leverage the power of trusted open source software and volunteer effort to allow helplines to spend less time worrying about administration and more time doing what they do best: helping people! Their software solution is the most widely-used computer solution for rota management by Samaritans and by University Nightlines in the UK and Ireland, and they're now beginning to expand their efforts to help a wider variety of diverse support services.