ImpressCMS is an open source content management system for building and running websites. The ImpressCMS Project was formed in 2007 as a result of a division in the XOOPS community. So, in January 2008 ImpressCMS was introduced.
ImpressCMS can be used for many types of webpages as its system is highly scalable. It offers different functionality for each type of website. That fact that ImpressCMS is fully modularized implies that it has a lot of extension opportunities. All you need to do is install the module that has the features you need, for instance: news, forum, photo album and other modules. ImpressCMS has a powerful theming system. You can change the look of the whole webpage in a few mouse clicks. It also has a really good security system which will protect all your data.
As soon as you decide to transfer your platform to ImpressCMS, you may use CMS2CMS to migrate very easily and quickly.