I assume this is free to use in the enterprise/corporate level but my company requires a EULA that clearly indicates this. Where can I find proof that it's free to use for enterprise and corporate environments?
For each free tool, when you run the setup wizard (before you actually install the application), the second screen displays the EULA. You can print (also to PDF if your Windows system support that) and copy-and-paste the EULA before agreeing to it.
You can also find a plain-text (but more difficult to read) version of the EULA here.