Etdware - What to remove and what to keep on the PC?

Etdware is an unnecessary layer to the proper functioning of the PC often proposed or imposed by third-party software
Manufacturer drivers and firmwares are sufficient

I'm reviving an old post but the reflection is still relevant

No, it doesn't take up much space, but I didn't know what it was for. Thanks anyway.
Another question, I have:
Microsoft .NET Framework 1.1
Microsoft .NET Framework 1.1 Hotfix (KB928366)
Microsoft .NET Framework 1.1 Hotfix (KB929729)
Microsoft .NET Framework 2.0
Microsoft .NET Framework 2.0 Service Pack 2
Microsoft .NET Framework 3.0 Service Pack 2
Microsoft .NET Framework 3.5 SP1

Is all this really useful? Because my computer indicates insufficient space... I don't know what to delete.
Thank you for your help.

Don't delete them.
First, empty the temp folders, temporary internet files, and the recycle bin, if you haven't already. Search for files by size (on C: and D:) and delete, among the largest ones, those that seem non-essential.

You can use Ccleaner to clean up! After clicking on "Analyze," it will show you how much space you can free up:


Or finally, buy yourself an external hard drive of 250GB. It's not expensive and it's even nice looking.

Alright, thank you very much for your help.