Requirement is as given below

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Available category : Community and Enterprise 

New Category : Premium 

New add-on should be listed  in Premium category  

1. WHMCS
2. ZOHO
3. Salesforce
4. STIR/SHAKEN

Reference of add-on : https://astppbilling.org/astpp-whmcs-integration/

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This add-on not required installation/uninstallation. 

Required More info button (Reference given in Screenshot ) which is redirect to astpp official website. 

WHMCS redirection URL : https://astppbilling.org/astpp-whmcs-integration/

ZOHO redirection URL : https://astppbilling.org/zoho-integration/

Salesforce redirection URL : https://astppbilling.org/salesforce-integration/

STIR/SHAKEN redirection URL:  https://astppbilling.org/stir-shaken-solution/

Zoho : Integrate Zoho CRM with ASTPP platform and avail ASTPP features like CTI features, Call transfer and many more of SIP calling. 

Salesforce : Enhance your customer relationship management by leveraging the CTI features available in Salesforce by integration with ASTPP. 

STIR/SHAKEN : Robocall Mitigation with Caller ID Authentication to Abide by the Law and Delighting Customers with a STIR/SHAKEN .
https://astppbilling.org/stir-shaken-solution/