Some Old FF addons which work in Palemoon
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joshex
- Moongazer

- Posts: 12
- Joined: 2025-12-17, 00:31
Some Old FF addons which work in Palemoon
First off I did not make these addons, I just found versions which would install in palemoon, or modified files to make them install correctly.
first up: DownThemAll a download manager, capable of parsing documents and pulling most images, videos etc. some images which are content protected through modern means wont show. it's better than your browser's downloader because you can pause and continue downloads, and add downloads from url, it downloads faster without any throttling. Unmodified, as is.
file name: {DDC359D1-844A-42a7-9AA1-88A850A938A8}.zip
https://files.catbox.moe/o48k1q.zip
extract and manually install to use.
Next we have: AdblockerUltimate version 2.26, capable of blocking ads including in video ads such as youtube video ads, (but seriously you should be using invidius for pootube). Has an additional feature "Block element" which allows you to select page elements to block and preview their removal to see if it breaks the page. it's great for removing overlay z-indexed content blockers "agree to our terms to continue"> "yeah, no. block" also useful for removing problem elements which make sites unusable. do not update this addon or the adblocker ultimate options page will be non-functional!. unmodified, as is.
file name: adblockultimate@adblockultimate.net.xpi.zip
https://files.catbox.moe/629ior.zip
extract and manually install to use.
Lastly a real treat: Advanced Cookie Manager, this tool allows you to not only see and delete individual cookies and their keys and values, but modify them as well. it's fun to replace google's cookies with a Cease and Desist order against google and their partners collecting data. Trollolololo. this is an addon I have kept installed since the olden days, it was the primary reason for switching from ff51.0 to palemoon as firefox booted it and all my addons and refused to let me reinstall it. I had to create a valid install.rdf for this addon to be accepted by palemoon. don't ask me how I managed to do it, I've forgotten. the addon manufacturer website is extinct, the creator has given up on it, it is abandonware.
filename: cookiemgr@jayapal.com.xpi.zip
https://files.catbox.moe/inxc4w.zip
extract and install manually, you must restart palemoon to complete the addon installation.
these addons are full-source, that is to say everything is supplied, no updates necessary. to view the source open the xpi's in 7-zip.
with that, enjoy. I'll be around to answer questions, if I have the answers. most of these I obtained by pulling the xpis out of my addons and extensions folder from my old firefox install., adblockerultimate however would not install in palemoon in the version I had in firefox, so I had to archive.org and waybackmachine to get an older version of the addon that would actually install in palemoon, 2.26 is the LAST version with an install.rdf that works with palemoon. As for advanced cookie manager I was unable to find anything online and basically looked at other install.rdfs and mimicked the way they were matching the versions etc to the versions specified in the other source files, tbh I was surprised it worked.
first up: DownThemAll a download manager, capable of parsing documents and pulling most images, videos etc. some images which are content protected through modern means wont show. it's better than your browser's downloader because you can pause and continue downloads, and add downloads from url, it downloads faster without any throttling. Unmodified, as is.
file name: {DDC359D1-844A-42a7-9AA1-88A850A938A8}.zip
https://files.catbox.moe/o48k1q.zip
extract and manually install to use.
Next we have: AdblockerUltimate version 2.26, capable of blocking ads including in video ads such as youtube video ads, (but seriously you should be using invidius for pootube). Has an additional feature "Block element" which allows you to select page elements to block and preview their removal to see if it breaks the page. it's great for removing overlay z-indexed content blockers "agree to our terms to continue"> "yeah, no. block" also useful for removing problem elements which make sites unusable. do not update this addon or the adblocker ultimate options page will be non-functional!. unmodified, as is.
file name: adblockultimate@adblockultimate.net.xpi.zip
https://files.catbox.moe/629ior.zip
extract and manually install to use.
Lastly a real treat: Advanced Cookie Manager, this tool allows you to not only see and delete individual cookies and their keys and values, but modify them as well. it's fun to replace google's cookies with a Cease and Desist order against google and their partners collecting data. Trollolololo. this is an addon I have kept installed since the olden days, it was the primary reason for switching from ff51.0 to palemoon as firefox booted it and all my addons and refused to let me reinstall it. I had to create a valid install.rdf for this addon to be accepted by palemoon. don't ask me how I managed to do it, I've forgotten. the addon manufacturer website is extinct, the creator has given up on it, it is abandonware.
filename: cookiemgr@jayapal.com.xpi.zip
https://files.catbox.moe/inxc4w.zip
extract and install manually, you must restart palemoon to complete the addon installation.
these addons are full-source, that is to say everything is supplied, no updates necessary. to view the source open the xpi's in 7-zip.
with that, enjoy. I'll be around to answer questions, if I have the answers. most of these I obtained by pulling the xpis out of my addons and extensions folder from my old firefox install., adblockerultimate however would not install in palemoon in the version I had in firefox, so I had to archive.org and waybackmachine to get an older version of the addon that would actually install in palemoon, 2.26 is the LAST version with an install.rdf that works with palemoon. As for advanced cookie manager I was unable to find anything online and basically looked at other install.rdfs and mimicked the way they were matching the versions etc to the versions specified in the other source files, tbh I was surprised it worked.
Last edited by joshex on 2026-02-03, 18:14, edited 1 time in total.
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vannilla
- Moon Magic practitioner

- Posts: 2519
- Joined: 2018-05-05, 13:29
Re: Some Old FF addons which work in Palemoon
DownThemAll has a maintained alternative available on the official add-ons service: https://addons.palemoon.org/addon/getemall/
Adblockers are kinda made obsolete by uBlock and eMatrix, but I suppose some people might still want one.
I'm not aware of any extension that can change a cookie's contents, so I suppose it'd be useful if Advanced Cookie Manager was forked/maintained properly.
Adblockers are kinda made obsolete by uBlock and eMatrix, but I suppose some people might still want one.
I'm not aware of any extension that can change a cookie's contents, so I suppose it'd be useful if Advanced Cookie Manager was forked/maintained properly.
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joshex
- Moongazer

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Re: Some Old FF addons which work in Palemoon
cool, I did not know downthemall had a palemoon fork. I'll have to try that out.vannilla wrote: ↑2026-02-03, 17:56DownThemAll has a maintained alternative available on the official add-ons service: https://addons.palemoon.org/addon/getemall/
Adblockers are kinda made obsolete by uBlock and eMatrix, but I suppose some people might still want one.
I'm not aware of any extension that can change a cookie's contents, so I suppose it'd be useful if Advanced Cookie Manager was forked/maintained properly.
Adblockerultimate blocks some things e/nmatrix doesn't catch. like as stated for youtube videos to load, you need to enable all the scripts and media from youtube/google, which means in-video ads are also loaded by default, regardless if they have a skip button or not. last I used it, adblocker ultimate removes those addvideos, they don't even show up, the video plays contiguously. but the most important feature is the select element to block feature; in the options page you can even set your own adblocking rules if you learn the syntax.
One note on this adblocker, in attempting to block all ads, it may use significant system resources when loading NeoSpywareVM pages causing the whole browser to become unresponsive til it's purged any nastiscript(tm). that's the only downside. it can be disabled on pages you trust.
I use ematrix along side this.
Yes, Advanced cookie manager is a gem of the old net. I really wish it supported html5 storage (which is actually just a cookie by another name so h5 can avoid US law regarding cookies and do illegal things) as well. forking it is an option, it'd take a bit of work, but would be worth it.
example of the interface of Advanced cookie manager and a modified google cookie:

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moonbat
- Knows the dark side

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- Joined: 2015-12-09, 15:45
Re: Some Old FF addons which work in Palemoon
Dunno if you're trying to farm engagement or what over here when there's enough sources for addons if you had searched the form and the official addon site first
You can find every old unsupported Firefox addon you ever wanted and then some from the classic addons archive, for starters. And your first place to look for addons should be Pale Moon's addon site because the ones there are actually written for Pale Moon and have a better chance of being maintained.
You can find every old unsupported Firefox addon you ever wanted and then some from the classic addons archive, for starters. And your first place to look for addons should be Pale Moon's addon site because the ones there are actually written for Pale Moon and have a better chance of being maintained.
"One hosts to look them up, one DNS to find them and in the darkness BIND them."

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joshex
- Moongazer

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Re: Some Old FF addons which work in Palemoon
not really farming anything, just sharing what I've got. I did try searching through palemoon's addons site, perhaps due to renaming I was unable to find certain addons or comparable replacements. like it was news to me that downthemall had a palemoon fork, because it was renamed 'getemall'.
I just searched through that list, nothing came back for 'cookie'. ugh, all the xpis are compressed in a single xpi? oh it's an addon that has a catalog of addons. Ok after a quick glance through the sourcecode, this xpi contains no other addons, it essentially links to the waybackmachine copies of a variety of addons and presents a page from which you can search or navigate to said addons.moonbat wrote: ↑2026-02-03, 20:47You can find every old unsupported Firefox addon you ever wanted and then some from the classic addons archive, for starters. And your first place to look for addons should be Pale Moon's addon site because the ones there are actually written for Pale Moon and have a better chance of being maintained.
I don't need this addon because I have already used the waybackmachine and searched through old addons, that's where I got the adblocker. however in my attempts to get advanced cookie manager I seem to remember I hit a dead-end in waybackmachine all the resources for it directed to jayapal.com, and every version of jayapal.com over the years had broken downloads in waybackmachine, reason? uncrawled url, would you like crawl the live page now? this page is available for purchase; the file is unavailable on this server. I tried to upload the xpi I have to archive.org and I forget what happened, something prevented it.
In my search for an install.rdf for cookie manager, I did manage to find an old github entry with an instal.rdf for a broken version of the addon(did not have all the components necessary to work), I was able to modify that install.rdf to match the working xpi I already had.
again my only purpose of posting was to share resources directly which are not on palemoon's addons site. I thought everyone was like me, if they want old addons they search for the old mozilla url and wayback it. now I know there's an addon for that lol.
that said cookiemanager seems to be the only thing neither archive has.
Edit: I personally have no interest in developing any of these myself, if someone else wants to maintain it, great. otherwise it's here as is.
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moonbat
- Knows the dark side

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Re: Some Old FF addons which work in Palemoon
What list?
You went all the way into the source code instead of just freaking reading the Github main page for the project I linked to?
Yeah, that's so much easier than having an immediate catalogue with the original AMO navigational interface:
This addon provides a direct interface to browse and search more old FF extensions than you could have dreamt of but ok.About
This catalog contains 93,598 versions of 19,450 Firefox add-ons created by 14,274 developers over the past 15 years using XUL/XPCOM technology before Mozilla decided to ruin the classic extensions ecosystem and go exclusively to WebExtensions.
Who creates these add-ons?
The add-ons listed here have been created by a wide range of developers from individual hobbyists to large corporations and were reviewed by a team of AMO editors before being released. Add-ons marked as Experimental have not been reviewed and should be installed with caution.
The source of data
All the data contained in this catalog was obtained from publicly available sources such as AMO, Wayback Machine and other open Internet directories and collections. Cloud storage is kindly provided by Zetamex Network.
This browser has been around since 2009, you think we don't know how or where to get older addons from? You could just ask what we do first.CAA provides multiple versions of the same addon - you can browse the list and install the one that would be directly installable (not necessarily compatible) with Pale Moon since it would have a green install button rather than a Download button.
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"One hosts to look them up, one DNS to find them and in the darkness BIND them."

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Mæstro
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Re: Some Old FF addons which work in Palemoon
Ah, Self-Destructing Cookies takes me back. I remember using it since sometime in the Firefox days (until 2019), and continued using it in Pale Moon until replacing it with Cookie Masters several years ago. SDC had the slight advantage of making it easier to purge session cookies for sites which did not require user accounts, but it appears that Cookie Masters splits off Seamonkey’s native cookie manager.
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What is being nice online?
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andyprough
- Board Warrior

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Re: Some Old FF addons which work in Palemoon
This does look like an intriguing ad blocker. Since I don't go to youtube it's not something I would use, but it seems like youtube ads are one of the most complained about issues by users on this forum. Maybe some people will make some use of it.joshex wrote: ↑2026-02-03, 18:37Adblockerultimate blocks some things e/nmatrix doesn't catch. like as stated for youtube videos to load, you need to enable all the scripts and media from youtube/google, which means in-video ads are also loaded by default, regardless if they have a skip button or not. last I used it, adblocker ultimate removes those addvideos, they don't even show up, the video plays contiguously. but the most important feature is the select element to block feature; in the options page you can even set your own adblocking rules if you learn the syntax.
One note on this adblocker, in attempting to block all ads, it may use significant system resources when loading NeoSpywareVM pages causing the whole browser to become unresponsive til it's purged any nastiscript(tm). that's the only downside. it can be disabled on pages you trust.
I use ematrix along side this.
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Gemmaugr
- Lunatic

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Re: Some Old FF addons which work in Palemoon
I got to YT, and only using uBO and eMatrix, I don't see any ads at all. It is a tad slow, and I sometimes have to restart the browser on the rare occasion, but it's working quite fine for me. Logged in to YT (It's almost the only google thing I use so).andyprough wrote: ↑2026-02-04, 19:04This does look like an intriguing ad blocker. Since I don't go to youtube it's not something I would use, but it seems like youtube ads are one of the most complained about issues by users on this forum. Maybe some people will make some use of it.
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Mæstro
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Re: Some Old FF addons which work in Palemoon
What else is there for you? I eliminated all personal Google use and deleted my account in 2019, the same time I gave up DRM and smartphones. I never used Gmail or Google Search. (My undergrad academic email address was through Gmail, but I tolerated it, using the JavaScript-free version of the page and then Interlink until I had got my BA in 2021.)
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Gemmaugr
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Re: Some Old FF addons which work in Palemoon
Off-topic:
The other one is Discord using google's Electron when it's a "stand-alone" program.Mæstro wrote: ↑2026-02-04, 22:27What else is there for you? I eliminated all personal Google use and deleted my account in 2019, the same time I gave up DRM and smartphones. I never used Gmail or Google Search. (My undergrad academic email address was through Gmail, but I tolerated it, using the JavaScript-free version of the page and then Interlink until I had got my BA in 2021.)
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andyprough
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Re: Some Old FF addons which work in Palemoon
There's also some Pale Moon developers that have collections of their own extensions and/or some old Firefox extensions. I use @FranklinDM's collection of extensions at https://projectfresco.github.io/addons/ ... ons&page=1, and also some of the extensions developed by @RealityRipple for Pale Moon at https://realityripple.com/
We used to have an extension developer named @JustOff, but he disappeared with the start of the Ukraine war as he was living in Ukraine at the time. I think most of his useful extensions have been added to @FranklinDM's page, or have been taken over by other developers in the years that @JustOff has been missing, but his older stuff is still available on github.
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jarsealer
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Re: Some Old FF addons which work in Palemoon
Off-topic:
Very annoying that you have to make a google account to even watch YT videos, the popup showed on every video I clicked and wouldn't let me play it. Although I think you can watch without logging in if you use the mobile app, which I don't want to install on my phone.
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Night Wing
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Re: Some Old FF addons which work in Palemoon
jarsealer wrote: ↑2026-02-05, 17:31[Very annoying that you have to make a google account to even watch YT videos, the popup showed on every video I clicked and wouldn't let me play it. Although I think you can watch without logging in if you use the mobile app, which I don't want to install on my phone.[/offtopic]
Off-topic:
I have two desktop tower computers and three laptop computers. I do not have a YouTube account which is controlled by Google. I watch YouTube videos all the time specifically for longboard surfing videos and linux computer related videos using any of my five total computers. I do not see pop-up ads. And I do not own a smartphone so no mobile apps.
I watch the videos using 64 bit linux Pale Moon using 64 bit MX Linux or 64 bit Debian distros. I do not see ads because I use uBlock Origin 1.16.6.1 which is enabled for YouTube. I have also done something else, which is legal, which I am not going to divulge since I do not want YouTube (Google) to get wind of it and block it.
As an example. I have a 9 year old great niece that wants to learn how to do a pop-up on a surfing 9' longboard so she can learn how to use a longboard to surf waves. So I sent her the YouTube video link below to watch and copy Haley Otto's surfing and Haley's pop-up technique. It's a short video less than three minutes of time. And I have never seen any ads before the video.
https://www.youtube.com/watch?v=Ie7cbT2rYfs
I have two desktop tower computers and three laptop computers. I do not have a YouTube account which is controlled by Google. I watch YouTube videos all the time specifically for longboard surfing videos and linux computer related videos using any of my five total computers. I do not see pop-up ads. And I do not own a smartphone so no mobile apps.
I watch the videos using 64 bit linux Pale Moon using 64 bit MX Linux or 64 bit Debian distros. I do not see ads because I use uBlock Origin 1.16.6.1 which is enabled for YouTube. I have also done something else, which is legal, which I am not going to divulge since I do not want YouTube (Google) to get wind of it and block it.
As an example. I have a 9 year old great niece that wants to learn how to do a pop-up on a surfing 9' longboard so she can learn how to use a longboard to surf waves. So I sent her the YouTube video link below to watch and copy Haley Otto's surfing and Haley's pop-up technique. It's a short video less than three minutes of time. And I have never seen any ads before the video.
https://www.youtube.com/watch?v=Ie7cbT2rYfs
MX Linux 25.1 (Infinity) Xfce w/Pale Moon, Waterfox, Firefox
Linux Debian 13.3 (Trixie) Xfce w/Pale Moon, Waterfox, Firefox
Linux Debian 13.3 (Trixie) Xfce w/Pale Moon, Waterfox, Firefox
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joshex
- Moongazer

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Re: Some Old FF addons which work in Palemoon
interesting. so I'm not the only one who keeps old addons around lol. Sad to hear about @JustOff.andyprough wrote: ↑2026-02-04, 23:42There's also some Pale Moon developers that have collections of their own extensions and/or some old Firefox extensions. I use @FranklinDM's collection of extensions at https://projectfresco.github.io/addons/ ... ons&page=1, and also some of the extensions developed by @RealityRipple for Pale Moon at https://realityripple.com/
We used to have an extension developer named @JustOff, but he disappeared with the start of the Ukraine war as he was living in Ukraine at the time. I think most of his useful extensions have been added to @FranklinDM's page, or have been taken over by other developers in the years that @JustOff has been missing, but his older stuff is still available on github.
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andyprough
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Re: Some Old FF addons which work in Palemoon
We almost all use various old extensions. As @moonbat said it is a good practice to search the forum if you find a need for an extension as we tend to discuss them in a lot of detail here.
As far as @JustOff, I don't think any of us know what happened. If he somehow got pulled into the war itself, or if just being in Ukraine disrupted his schedule enough that he stopped having the time to develop and communicate? No idea.