Connecting 3 Open API's for Joomla Based Site

Need to have integrate all the API's for [login to view URL] into an existing Joomla Site. The API's listed above should match the existing template on existing Joomla Site and should have all possible functionality. Also Need to find a Seamless way for the [login to view URL] Admin to be integrated in site, not sure if an API exists, but would like to have all of the functionality from existing [login to view URL] Admin account to be accessed from inside Joomla Site. Need to Integrate Zendesk API for Joomla Site. Would like to integrate Zendesk API into existing Joomla Site to replace current Support section, as seamless and clean as possible. Need to Integrate [login to view URL] into existing Joomla site, utilizing webforms from podio to be seamless and clean into existing Joomla site. If possible a SSO (Single SIgn On) for all three API's, to be recognized by Joomla and vice versa. Most of the site is finished, and is not yet public and would like to give more details about site once bids are given, bids should be as accurate as possible.