Sirius Open Source is a company based in Washington, USA which provides a range of open source services to medium and enterprise level organisations to allow them to maximise their productivity whilst minimising their risk. Sirius provide network and infrastructure deployment, application development and technical support. Open Source is a model being utilised by many in place of proprietary (licenced) software. Wikipedia is an example of a project based on the philosophy of open source. Sirius provide a full Enterprise Stack which can include, but is not limited to, products such as Asterisk (VoIP), JBoss (application server), Apache (web server), Squid (proxy), OGo/Scalix (groupware), Sendmail/Cyrus (email), Samba/CUPS (file & print), OpenLDAP (directory server), PostgreSQL (database) and Linux (operating system). Mark Taylor formed Sirius in 1998 and has been the CEO throughout the company's history. Sirius have worked with household brands including Pepsico, BOC, Three, Sony Ericsson, Axa and Specsavers. In 2008, Sirius became the first Becta-accredited supplier of Open Source software and services to schools in the UK.