The Netherlands based company Themis Electronic Systems B.V. and the Themis Foundation on Prison Reform started their initiatives in 2008 in order to improve communications between relatives and prisoners. As part of this undertaking a unique email communication system was launched (prisonmail.eu), which greatly facilitates communication between inmates and their relatives and friends and thus decreases the social isolation of those serving a term of imprisonment. For the same purpose, we searched for ways to help relatives to find relevant information on places of detention, including access to the facility, prison conditions, staffing, etc. The World Prison Directory is providing all this information and at the same time will serve as a social platform for all those concerned. You can help us to improve our service by providing additional information and/or corrections. Please write to us at: firstname.lastname@example.org.