(Edit: It's now slightly more open source, and while I'm not very familiar with exe building, the entire actual program seems to be missing, this is building a shell. Why not just post the project?)

Requires external program to work, fine. What's less fine is that although it claims it's open source, the source is nowhere to be found on Github. The zip-file he's labeled as "source" in releases only has a config file and the HTML used to explain that "it's totes not a virus and 300kb is too small to fit one in" (you could. Another red flag).

I wouldn't mind closed source, but when it claims to be transparent, and it's not, that raises red flags. The exe is also not signed by MS and flags up as adware in some antivirus software (may be false positives). Point is I don't trust it, and I don't think you should either. Releasing the actual source would probably fix this concern.

This addon does work, I know that it seems sketchy that you need to download a file to make it work but bear with me.

First install the addon and click the thumbnail icon (or the shortcut ctrl+shift+f7) download the extra file. Unpack it and copy the files to your firefox addon folder.

To find your firefox addon folder go to about:support in your firefox browser and there should be an area called profile folder, click the button next to it labelled "open folder". Now copy the install, uninstall and aot files into that folder.

Now run the install file and your good to go. If you press the thumbnail icon (or shortcut keys) the firefox window will stay on top. Press the key again to stop the firefox window from being on top.

This addon is great, it only got 4 stars because of the extra digging I had to do to get it to work (I'm a windows user by the way). If you could find a way to fully automate the process this addon would be a perfect 5.