Power studio app (previously flow studio) is a great app for Flow makers and administrators. It is offering wide range of options to manage Flows as an administrator. You can use the following functionalities with this app.
- Advanced Discovery
- Sort Everything
- Flexible Tagging
- Migrate and Deploy
- Improved Administration
- Run Sparklines
- Maker Superpowers
- Version Snapshots
- Full Text Search
- Export your data
How to use it?
- Open this link and sign in with your CDS credentials.
- You can see list of Flows with multiple operations like Export Excel, Flow Diagram, Sort, Filter and etc.,
- Click on (…) next to any flow for more operations. You can see all operations that you can perform on each Flow in the below screen shot.

They are offering one month trail version, so I suggest everyone to subscribe for trail version and explore all the options. I like the Flow Diagram and Snapshots options the most.