Hello,
It may be bit niche, but I would like to suggest my Google Music Hotkeys:
as a replacement for these legacy add-ons:
https://addons.mozilla.org/en-US/firefox/addon/google-music-control/?src=search
https://addons.mozilla.org/en-US/firefox/addon/google-music-hotkeys/?src=search
Today’s v1.2.0 can also replace this as well:
https://addons.mozilla.org/en-US/firefox/addon/google-music-play-button/?src=search
Hope it helps someone 
Users of Tab Groups, which is not for vertical tabs, might be confused and/or misled by the multiple recommendations to replace it with Tab Center Redux, which is for vertical tabs and (if I recall correctly) not for grouping:
More appropriate replacements might be:
Please be prepared to include any/all of them in due course. Firefox 57 will probably be too soon to recommend any one. (I guess that the finder should exclude extensions that are experimental – true?)
Brief, Sage, Sage++ and Bamboo RSS readers can be replaced with
Feedbro Reader: https://addons.mozilla.org/en-US/firefox/addon/feedbroreader/
Thanks @grahamperrin! But yea, to this point I’ve not included any recommendations marked as experimental, so that would preclude Conex. Simplified Tab Groups is almost an ideal replacement, but it currently has compatibility issues so that makes me a bit uneasy to add as a recommended replacement.
I find very useful the following addons for which I have not found a replacement:
https://addons.mozilla.org/it/firefox/addon/tabletools2/
https://addons.mozilla.org/it/firefox/addon/xclear/
Thanks
let’s not be shy about this: the required WebExtensions API is not available.
Does anyone see a significant resemblance between Tab Groups and Tab Center Redux? The clue’s in the name – groups – and from the add-on page:
… Groups are incredibly easy to use! … switch between your groups …
… groups management … drag tabs across groups or out of their current group to create a new one. … only the tabs in the chosen group will be visible. …
… name groups, resize them and rearrange them visually however you like. Create groups …
Not one mention of the word group at the Tab Center Redux page.
Similarly: nothing group-related at the page for … sorry, I began comparing the three other recommendations then realised, results for Tab Groups are very fuzzy.
Later I stumbled across this:
Reality check:
– and consider the possibility that negativity from the finder will have a knock-on effect on perceptions of the much broader changes to AMO.
Simply:
Please, folks, let’s make the new finder a tool of real value. Thanks!
I experimented with https://addons.mozilla.org/firefox/search/?tag=firefox57&tag=tabs but the combination of tags did not have the desired effect. Related:
New tab - Moment is a replacement for Moment.
Full disclosure, I am the developer of New tab - Moment, since Moment was abandoned for 4 years.
In Framasphere, Jason Robinson draws attention to:
– comparable to EFF Technologists HTTPS Everywhere.
EFF Technologists state:
… This extension will be ready for Firefox 57+ compatibility. …
– so it may be respectful to not make an entry in Extension Finder at this time; do not detract from the work of the developers of the original.
To search exclusively for modernized tabs content, try this link:
https://addons.mozilla.org/firefox/search/?tag=firefox57&atype=1&cat=93&page=
We’ve also been pointing folks to this curated collection of modernized tabs content:
https://addons.mozilla.org/firefox/collections/mozilla/tab-organizers/
Thanks,
Information overload – thirty pages. Related to that type of search result, from a few months ago, with added emphasis:
That’s much smarter however, at least two listings seem irrelevant to organisation.
Alpha testing, in Mozilla’s beta channel, began 2017-10-12.
I see developer attention to WebExtensions-related issues. Thorough feedback, now, from end users might allow the developers to cease classifying Greasemonkey for Firefox 57 as experimental before the release date.
For what it’s worth: no problem with the one script that I use (for MacRumors Spy).
Really. HTTPS Everywhere is already WebExtensions in its Development Versions.
Greetings.
Thanks @nova6k0, https://addons.mozilla.org/addon/https-everywhere/reviews/939609/ refers to https://www.eff.org/files/https-everywhere-test/index.html – is that the proper unstable channel?
It seems they just released a WebExtension version yesterday on the main channel: https://addons.mozilla.org/en-US/firefox/addon/https-everywhere/versions/?page=1#version-2017.10.30
Similar to legacy ScrollyFox. AutoScrolling is:
Similar to legacy ScrollyFox. ReScroll is:
Extensions for paging and scrolling with Firefox 56
From https://addons.mozilla.org/addon/stylish/versions/?page=1#version-2.1.1 (2017-10-31):
Last legacy version, getting ready …
@amyt thanks again.
@sdevaney and colleagues: please be prepared to remove Stylish and Stylus from the finder, when Stylish becomes ready (not experimental). Thanks.
I’m suggesting a better replacement for ReloadEvery (https://addons.mozilla.org/en-US/firefox/addon/reloadevery/)
For FF57, migrate to ReloadMatic (https://addons.mozilla.org/en-US/firefox/addon/reloadmatic/).
It seems ReloadEvery already has a recommendation on ExtensionFinder (Tab Auto Refresh), but the latter does not really have anything in common with the original addon as far as the UI goes. ReloadMatic is a much better match as it is very similar to ReloadEvery while at the same time offers additional features.
Nice recommendation! I’ve adjusted the tools.
Thanks, Scrollkey is not a replacement … in retrospect, it’s probably unfair to use this topic for things that might be irreplaceable. Sorry. I removed three of the five extensions from post 101 above.
Instead please see the list at post 35 under Concern about WebExtensions exclusive strategy from add-on authors and users;
I accept that some of these will be irreplaceable. For posterity …
