Apps similar to In-Portal include Tiki Wiki CMS Groupware, which is free and open source. Other options are Composr and b2evolution. In total there are three CMS Tools like In-Portal for self-hosting, Mac, Windows, Linux and the web.
Tiki Wiki CMS Groupware is a full-featured, web-based, multilingual (40+ languages), tightly integrated, all-in-one Wiki+CMS+Groupware, Free Source Software (GNU/LGPL), using PHP + Smarty, MySQL, Zend Framework, jQuery and Bootstrap.
Canada
"With Composr, we are committed to using our experience and talents to keep the web open, to empower teams to build sophisticated sites with elegance and efficiency, and to carry the web forward with the highest of standards.
United Kingdom
Free open-source platform supporting multiple blogs, forums, newsletters, photo galleries, structured content, permissions management, multi-language support, analytics, responsive design, WYSIWYG editor, and tools for creating community-driven or documentation sites.
France
EU
