Looking for a pre-built enterprise intranet solution (for 150-200 employees

Hi Creative People,I am looking for a pre-built enterprise intranet solution (for 150-200 employees) to be implemented on webiOSAndroid that you can customize a little bit for me, having following fea Hi Creative People,I am looking for a pre-built enterprise intranet solution (for 150-200 employees) to be implemented on webiOSAndroid that you can customize a little bit for me, having following features:-NEWS: -FORUM: -CHATS:-APPLICATIONS:-DOCUMENTS:-GROUPS -- TEAMS-- USERS-3 LAYERS OF ADMINS (SUPER ADMIN , GROUP ADMINS,...