installing viochat, file tranfer, and chat peer-to-peer in my web app - open to bidding

hello i am jhonier, i want to install a comunication system in my web app: chat, videochat, messages, notification messages, and file transfers for my user. maybe like this: [login to view URL] it shhould be: not use third party software to be esier for my users. responsive (desktop - tablets - cellphones). cross-browser (crhome-firefox-zafari). i want to know if: are you interested to help me? how much is it? (for all project) do you know someone else in case you can not help me? thanks for your atention.