I hope Cyberscorpio will update Super Start soon! Please do! However:
Firefox 56 is the last release to support legacy APIs for add-ons. You can go back to that version. I’d suggest looking into Firefox ESR if your add-ons are absolutely critical to your work. Using ESR will allow you to receive security updates while still keeping your legacy add-ons for the first few releases of Firefox Quantum. You won’t get new features (ESR is based on an older version of Firefox), but by the time ESR upgrades to Quantum, you should be able to go back to the regular channel with an expanded set of WebExtension APIs.
All older Firefox versions can be found here: https://ftp.mozilla.org/pub/firefox/releases/ The ESR (Extended Support Release) here: https://www.mozilla.org/en-US/firefox/organizations/
However, my choice at the moment: As an alternative you can consider to switch (temporarly) to Pale Moon. They support the latest version of Super Start. Super Start version 184.108.40.206 appears perfectly compatible with Pale Moon. To install Super Start 220.127.116.11, download the Super Start install file from AMO (super_start-7.4.0-fx-windows.xpi). Within this xpi archive, then change the min-version, in install.rdf, from 41.0 to 24.0. Rezip the xpi file, if necessary, then install in Pale Moon. AMO = https://addons.mozilla.org/en-US/firefox/addon/super-start/
(If the download option is not available in FF or Pale Moon, download it with your Internet Explorer. Just a workaround)...
Start using "Hover My StartPage" which can be found at
This little gem has the same lay-out as Super Start. It lacks functionality, but you can even use it in other browsers. For the thumbnails I use Greenshot... give it a try!