General solutions category. If you have suggestions feel free to contact at

Freshdesk - Azure DevOps Integration

Zendesk - Azure DevOps Integration

Freshsevice- Azure DevOps Integration

Azure DevOps authentication guide

Syncing of Comments

Freshdesk - Github Integration

Zendesk - Github Integration

Freshservice - Github Integration

Github Authentication Guide

Zendesk - Asana Integration

Asana Authentication Guide

Zendesk - Azure DevOps Connector

Freshdesk - Azure DevOps Connector

Freshservice - Azure DevOps Connector