This talk will introduce the secure, scalable and reliable groupware server Kolab that allows you to regain control of your personal information and collaborate with others using fat clients and your mobile phone. This talk will introduce the secure, scalable and reliable groupware server Kolab. It is formed by a number of well-known and proven Free Software components and adds intelligent interaction between them. There's a web administration interface, management of free-busy lists and resources, synchronization for several devices and more. Various clients can access Kolab, among them Kontact (KDE) and Roundcube (Web). Best of all, Kolab is 100% Free Software, so you are free to use, study, share and improve it.