Hi.
First of all, how do you see this desktop app? Do you have any mockup yet ?
This are the questions I have so far:
1. So, you want the app to be independently on any other software? Does it need to be cross platform?
2. There are options to create app in chrome apps. But this depends on chrome thought, is this option OK for you?
3. Do you have some API to that chat that you are using on the web app, so that we can use in desktop app ?
4. Does the API also supports auth ?
Thx, this are the questions so far. Let me know details and we can discuss more.