Hi @williamson,
Welcome to the Freshworks Developer community! 
Thanks for showing interest in our Freshworks Developer platform to build apps on the Marketplace for Freshworks customers. Sorry for the delay from our end.
To get started, find the guide on our documentation and check out the other resources to explore further.
The step-by-step guide for the app development and guidelines, criteria, and the app review process have been covered in this article. Check it out.
You can find a repository of use cases that are recommended from our platform during a paid-app campaign. It is still public.
For any real-time needs of the customers, you can join the Freshworks refresh customers community, find the trend of topics, and ask them yourself.
For more resources, find the sample apps, tutorials, and guides to help you with the app development, publishing, and maintenance stages.
Let us know if you have any other specific queries that we can discuss here.