Fred Flintstone

About me

Developer Information
Name Fred Flintstone
User since February 23, 2013
Number of add-ons developed 0 add-ons
Average rating of developer's add-ons Not yet rated

My Reviews


Good idea, but ... Rated 2 out of 5 stars

I liked the idea of an add-on that would block unwanted cookies (just like other add-ons such as Cookie Monster do), but would also delete all unprotected cookies when Firefox closes. Unfortunately, I couldn't find any way to keep this add-on from deleting all cookies on exit (whether they're protected or not) by using that option. What's the point of designating some cookies as "protected" if they're just going to be wiped out anyway?

I wrote to the author of the add-on to point out this issue, but never heard back, so I've returned to Cookie Monster.


New version issue Rated 5 out of 5 stars

I have been a BIG fan of this add-on for a long time, even though I too have experienced the periodic loss of saved tabs (hint: use Mozilla Backup and then just restore settings).

As a result, the idea of a new, more stable version seemed intriguing enough until I actually tried updating. After the update, the OneTab page didn't show any of my saved tabs, but instead, displayed an error message which stated something to the effect that it was inaccessible (I don't remember the exact text of the message). So, I've switched back to the old version.

I'm also curious about mentions of "cloud storage". Is the new data file kept in the "cloud"? If so, that might explain why the OneTab page couldn't access the saved tab data. Also, I would be concerned about my browsing data being kept on someone else's server without notification. After updating to the new version, I couldn't find a new database file in the Firefox directory, so the cloud storage explanation seemed at least plausible.
Update: Following up on the developer's response, I tried updating the add-on again, and I found out where I went wrong the first time -- I had tried to use the same tab to access my saved tab data, which resulted in the data being inaccessible. When I opened a NEW OneTab tab, everything was there like it was supposed to be. So the update does work.

In answer to the developer's question, yes, it was MozBackup that I was talking about when I explained how to save and restore the old data for OneTab.

This user has a previous review of this add-on.


Still a few problems Rated 3 out of 5 stars

I like this theme a lot, and am glad that someone decided to resurrect it for the latest version of Thunderbird. However, there's a few problems I found with this update:
- Past-due tasks don't change colors any longer
- Tasks don't show the check mark column any longer
- Tasks don't show the priority icon any longer
- When writing an e-mail, the header input fields are not shown as input capable
- In the calendar, the checkmarks for selecting which calendar(s) to show are missing
There may be other issues, but these are the ones I noticed immediately.

Realtime IP Check

Still love this addon ... Rated 5 out of 5 stars

But one bug did arise in the new version. First of all, I love the smaller button; however, when using a dark theme, the text in the button changes to white. As a result, when the background color of the button is green, you can't read the text (it disappears almost completely). Since the text is surrounded by the button background color itself, there should be no reason to allow text color to change to match the theme -- it should be black all the time.

Also, if I might offer one small suggestion for an improvement, it would be nice to have an option (maybe when right-clicking on the button) to show additional information about the IP address ... maybe something like what the addon "Whats My IP" displays.

Even without any additional changes though, it's still a great addon.

This review is for a previous version of the add-on (1.0.0).  This user has 2 previous reviews of this add-on.

Cookie Controller

Quite a nice addon Rated 4 out of 5 stars

Simple and easy to use. I would, however, like to offer a couple suggestions for new options:

(1) Automatically delete cookies for a site if you switch to "Cookies denied"

(2) Auto refresh the page if you change the setting for the site

Both of these options are included in "Cookie Monster", which is a similar addon. But since I like "Cookie Controller" better overall, I believe adding those two new features would make it almost perfect.

This review is for a previous version of the add-on (5.3). 

Realtime IP Check

I'm revising my previous review Rated 5 out of 5 stars

After posting about a problem I was having with this addon, the developer (very quickly) took my suggestion and modified it. Realtime IP Check now works perfectly for me, so I'm giving it a very enthusiastic 5 stars.

I've tried several different addons that display the user's IP address, but this one is by far the best because it continuously monitors to see if the IP has changed, rather than requiring you to click on a button to display the same information.

Thanks a lot for making the changes.

This review is for a previous version of the add-on (0.9.6).  This user has other reviews of this add-on.

Realtime IP Check

Promising idea, but ... Rated 3 out of 5 stars

At the request of the author, here is an example of what the website he is using reports. I'll open the website and refresh it 4 additional times:
So, five different requests to that website yields five different incorrect IP addresses. All of them are technically valid IP addresses, but none of them are mine.

If I go to other sites that check IP addresses (e.g., or, the results are correct, but "" is not. Also, I am not using a proxy server, so that shouldn't be affecting the results. I tried going to that same site in Google Chrome and it worked perfectly, so it may be a conflict with another addon or with some option in Firefox that I've selected.

Any thoughts? I also realize that since this addon is just extracting what an external website reports (incorrectly in my case), there may not be any easy resolution other than turning off all other addons one-by-one to determine the conflict. If I might make a suggestion, a really nice option would be to offer the ability to select from multiple IP reporting sites.
it doesn't work at all for me. It never shows the correct IP address, and then (about every minute or so), it changes to another incorrect IP address. And it will cycle through more incorrect addresses continuously until I shut it off. Too bad - it could have come in handy.

This review is for a previous version of the add-on (0.6.0). 

NASA Night Launch

Beautiful theme Rated 4 out of 5 stars

I really like this one, even though I would prefer to have the background images be optional rather than included by default. One other small observation: has anyone else noticed that the orange "Firefox" button in the upper, left-hand corner doesn't appear as a solid color?

This review is for a previous version of the add-on (0.6.20160125). 

Random Agent Spoofer

Just a question ... Rated 4 out of 5 stars

I apologize for using this forum to ask a question, but since Github seems to be more geared towards reporting problems, and there's no way to contact the developer directly, I feel I have no other choice.

So here's my question, I made the mistake of installing the Github version of the add-on, but would now like to return to using the AMO version (so I can have the version that's "verified for use in Firefox"). I've tried uninstalling the add-on, restarting Firefox, then installing the AMO version, but then I find that a lot of features, such as the whitelist, are disabled. Is there a way to go back? I like this add-on a lot, and want to keep using it, but since Mozilla will soon stop us from using unverified add-ons, I think it would be beneficial to switch back.

Please advise.

This review is for a previous version of the add-on (  This user has a previous review of this add-on.

Random Agent Spoofer

Rated 5 out of 5 stars

Let me start off by stating that this is a great add-on, and clearly the best one available for changing the user agent information. With that said, I'm apparently going to be only voice of dissent about the virtues of the new version ( Overall, the new version has some nice features and it does work in FF 40, but there are a few issues:

1. This version uses a LOT more memory than the old version (1.63 MB vs. 1.04 MB), which even in the old version, was a bit excessive.

2. You can't move the icon/button out of the main toolbar. If you try to move it to, for example, the sidebar, the icon expands way too large and messes up all the other sidebar icons. I, for one, do not like to leave all add-on icons in the main toolbar, so it would nice to be able to move it like I could in the old version.

3. This one I admit is kind of ticky-tacky, but the add-on used to be easier to turn on and off. All you had to do was right-click on the icon to toggle the on/off status. Now it's left-click, select an option, then click somewhere else in Firefox to close the options window.

4. It seems that we used to have more control over the user agents that were selected/excluded. That level of control now seems to be missing.

5. Finally, the whitelist is an excellent idea, and one that was sorely needed (especially on sites like YouTube). However, rather than mimicking the functionality used by most add-ons of being able to simply adding a website to a list, it appears you have to enter in a short bit of custom, cryptic script with no explanation of the syntax. For example, when are you supposed to use the "canvas" or the "options" segments? And why is the "canvas" segment enclosed in brackets when none of the other segments are formatted in the same way? Also, are there other segment types we might need to use, and if so, how do they work?

Again, I don't mean any of this as a complaint since I still give it 5 stars, but my ideas are only suggestions. And I hope you keep this add-on going for the foreseeable future.

This review is for a previous version of the add-on ( 

All Downloader Professional

Rated 1 out of 5 stars

I had high hopes for this add-on, thinking it might be a suitable replacement for FlashGot. However, I would have been a lot more impressed if it actually worked. But it doesn't. It doesn't seem to matter which files I select, but when I click on the download button, nothing happens. Not a single file shows up on my computer. So I have to agree with Matteo.

Since there are some people who seem to be able to get the add-on to work for them, I have to admit there's a possibility some sort of add-on conflict may exist. Unfortunately, it may not be possible to find out what's causing the conflict.


This review is for a previous version of the add-on ( 

LavaFox V2

Rated 4 out of 5 stars

Overall, I LOVE this theme, even though it does have some problems, including (but not limited to) hiding some icons (e.g., anonymoX). It also doesn't work well with Vertical Toolbar. The worst issue I've found to date, however, is that in the latest version (2.3.3) it messes up the searchbar in version 34.0.5 of Firefox so that it's completely unusable. As a result, I am using the previous version. I fully admit that these issues could be at least partly due to conflicts with other add-ons (as I was told by the author), but it's so much nicer when themes work and play nicely with others. Nevertheless, if these issues were resolved, LavaFox would easily be worth 5 stars.

This review is for a previous version of the add-on (2.3.3).  This user has a previous review of this add-on.

Second Search

Rated 5 out of 5 stars

In the past, this has been an extremely helpful add-on. Unfortunately, it doesn't work with version 34 of Firefox. The new Firefox has its own way of performing the same function, but Mozilla's solution doesn't work nearly as easily. Any chance that Second Search will be updated?

This review is for a previous version of the add-on (0.7.2014050501.1-signed). 

Weather Forecast Worldwide

Rated 3 out of 5 stars

I'm not quite as enthusiastic about this add-on as the other reviewers, but it is pretty good simply based on the fact that it works (a lot of other weather add-ons are currently down for the count). A few minor changes would elevate its ranking, in my opinion though:
(1) It would be nice if the temperature which shows up next to the toolbar icon displayed in fahrenheit rather than celsius, since that's what I selected in the options.
(2) Provide better popup information when the mouse is over the icon, such as current conditions rather than just the name of the add-on.
(3) Find a way to get it to use less memory. It uses almost 600 KB of memory, which when compared to a much more complex weather add-on like Forecast Fox (which uses less than 100 KB) seems a bit excessive.
(4) When it uses that much memory, it seems logical that it could stay updated rather than the annoying lag experienced when waiting for the display after clicking on the icon.
(5) It has kind of a counter-intuitive and awkward way of changing options. It would be much handier to get to the options the same way that probably 90 percent of other add-on do it.

This review is for a previous version of the add-on (0.1.0). 

LavaFox V2

Rated 4 out of 5 stars

I love this theme! So many little details that give it a lot of character. My only issues with it are these (and the only reasons I didn't give it 5 stars):
-- I have my Firefox set up so that the Navigation Bar is on top of the display. That works okay as long as Firefox is maximized. If it's not maximized, this theme makes most of the Navigation Bar disappear off the top of the screen.
-- I don't like what it does with the toolbar icons (i.e., turning them into a 3D appearance). It would be nice if there were an option to leave those icons alone. It also messes up the separator lines in the toolbars.
Other than these two issues, I think it really is amazing.

This review is for a previous version of the add-on (2.2.9). 

Feed Sidebar

Rated 4 out of 5 stars

Simple, easy-to-use RSS reader with a small memory footprint. Some people have complained about how it displays feeds (i.e., in the sidebar rather than in a dropdown menu), but since there are plenty of other add-ons that offer a dropdown menu, different strokes for different folks. Personally, I like the sidebar method.

There are a few other limitations, however, that prevent me from giving a 5-star rating:
1) It presents a stupid error message every time it can't access a feed. I have a couple of feeds that are only available once a week or so, and since I have the feeds update every half hour, I have to see those annoying messages dozens of times a day. Would love to have an option to turn the messages off.
2) It locks up after closing the sidebar, preventing any actions and requiring a restart to return to functionality.
3) It would be nice if it had an unread counter on the toolbar icon, so that if the sidebar is closed, you know how many items are waiting. While it's nice that there's a popup message indicating when new items arrive, if you're not watching constantly, you don't really know about all the new items.
4) Speaking of the popup messages, the descriptions in these messages don't always match with the new items that are added - it seems like they're sometimes out of sync.

If even some of the above items were addressed (especially items #1 and #2), Feed Sidebar would absolutely be worth 5 stars.


Rated 4 out of 5 stars

Good idea, but it doesn't seem to work quite right for me. When I click on the icon, all the tabs get hidden just like I expected, BUT the OneTab tab which appears is completely blank. If, however, I restart Firefox, the correct tab with all the links to the hidden tabs will appear. So, I guess it works in a way, but I wasn't expecting to have to restart Firefox just to be able to see the list of hidden tabs. It's entirely possible that other add-ons I have installed are causing this to happen, but I have no idea which one(s) that might be. I'm disappointed.

Based upon the developer's response, I started to do some experimenting to see if I could isolate the reason why OneTab sometimes showed a blank page. The "web site fonts" issue wasn't relevant. And even though I'm not totally convinced I've solved the mystery completely, I've found that disabling the "Disconnect" add-on makes it work a lot more reliably. I've now changed my rating from 3 stars to 4, and I do believe OneTab offers significant improvements over other similar add-ons (e.g., HideTab, TabStash, Tab Grenade, StoreTab).

This review is for a previous version of the add-on (1.7.1-signed.1-signed). 

Forecastfox Weather

Rated 5 out of 5 stars

I agree with all the enthusiasm that everyone is expressing for Forecastfox, and also share their disappointment with the new inability to use it brought about with FF 29. That IS part and parcel of the fun, little accelerated FF update schedule after all -- discovering what gets broken and how to fix it again in each new release.

With that said, I'm puzzled with the comments from those who are stating that everything can be fixed by installing the Forecastfox update from the link provided by so many, along with re-establishing the add-on bar through one of a handful of new add-ons fixes. Yes, I followed those steps and was then able to customize and drag Forecastfox back down to the add-on bar. Problem is that is doesn't stay there -- within a few minutes or when I restart FF, it disappears again. Unless I'm missing something, I don't see the improvement.

More concerning is the fact that the developer seems to be silent on the subject. I do hope he hasn't abandoned all of his faithful followers. Version 2.2.4 doesn't seem to be an improvement, so we need something else. Otherwise, we're all stuck. AniWeather also seems to be plagued with the same issue, so the only alternative right now seems to be Weather Now, which doesn't have anywhere near the capabilities.

Tab Grenade

Rated 4 out of 5 stars

Loved this add-on when I first found it, but now I've noticed a couple of issues:
#1) After installing FF 29.0.1, the icon to access Tab Grenade has disappeared completely. This is obviously a major issue, as the add-on is now unusable.
#2) There seems to be no way to get rid of old history for tabs saved. So, apparently, it just keeps storing old tab groups forever. Would be nice to limit the length of time they're saved. Minor issue, but would be handy.
Other than the above two items, Tab Grenade is quite useful.

This review is for a previous version of the add-on ( 

All-in-One Sidebar

Firefox version 29 Rated 5 out of 5 stars

Switched over to FF 29, and even though I'm not a fan of it, I'm sticking with it for now. So, it's great that an update of AiOS which will work with that version of FF has been made available. Only one problem I've noticed so far -- the new version of AiOS puts too much spacing between the icons, resulting in excessive space usage. It's a minor issue, but would be nice to have resolved.

This review is for a previous version of the add-on (