An optional -Algorithm flag lets you choose between MD5, SHA256, etc. It's nice to have this built-in.
For 3rd party options I really like HashTab [0] which is free for personal use. It places a configurable list of hashes in right-click > Properties, with a bonus of comparing the hashes against one you might already have on your clipboard and giving you a green "OK" if it matches.
yes, I know. I can't fix the Windows GUI, but I can try to offer workarounds. Not everyone knows all of the little things you can do, including myself.
I think you can do "dir | clip" at the command line or in the address bar of an explorer window to get this.
> checksums to verify downloaded files.
there is a PowerShell commandlet that does this out of the box, if I remember correctly.