Employee Intranet Software Resources

Yes there is an app called Jive Daily with notifications capabilities, you can use it to share publish blogs/documents

it is a kind of facebook but for enterprise to enhance collaboration and information sharing within an company. it is not only an intranet but any employee can create his own page groupe space and share idea data document with selected employee or all employee I use it on a daily basis to share information about the ERP i am managing with my users communitiy

Yes, Igloo has tons of useful integrations. Check out their site here: https://www.igloosoftware.com/product/integrations/