Due to my profession I always have to work with a lot of environments. Accessing them via the Remote Desktop Client, which comes with Windows, is not very practical. Maybe this is a feasible way to connect if you don't have to work with a lot of different environments.  But above a certain number (e.g. 10+) I recommend to switch to another tool.
In the following I would like to introduce such a tool.
And the best thing is that it is available free of charge.

The Utility:

Remote Connection Management
Centralize, manage and secure access to remote connections. Remote Desktop Manager is your single pane of glass for all your remote connections.
CTO PQR – Microsoft MVP, Citrix CTP and VMware vEXPERTRemote Desktop Manager

Download:

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Remote Desktop Manager

Installation:

Registration:

Activation Mail:

Building a management structure:

First I start to create folders for the different companies I work for....

In this case I will name the company "Test".

I dont want to set credentials for this folder, because there are environments that needs different credentials. To meet this requirement I usually create additonal subfolder where I assign different credentials.

Result:

Next I create a subfolder for the different credentials I use for the specific company (mostly a normal user and an administrative user).

In this case I will name the company "Test".

Again, I do not specify any credentials for this folder.

Result:

To be continued.....