Allasso Travesser

About me

Developer Information
Name Allasso Travesser
Location USA
User since January 5, 2012
Number of add-ons developed 6 add-ons
Average rating of developer's add-ons Rated 4 out of 5 stars

In a little more detail...

My Development Philosophy

Right off, let's get one thing straight: I do this for me. ME, ME, ME. It is an outlet for my creative expression. Sometimes I see work someone is doing, or that I am doing, and I'm inspired how I can make a tool or improve existing software that would assist. The software I write is not for everyone, nor is it intended to be. Sometimes others flow with my vision, and can find benefit to themselves in using what I've created. So I make some of it available publicly, and I am most happy if a few others get some help from it. I am not opposed to feature requests, and have granted MANY, even a lot of things that I wouldn't use myself. But keep in mind my philosophy. Sometimes there's a way in which requests can begin to feel oppressive.

Regarding Reviews

I am often saddened when people give an addon (not just my own) a less than good review because it lacks one or two things that would make it "just perfect" for them. A very powerful tool so they even say themselves. If it just had a button over here. Like giving a Lamborghini 4 stars (or even 3 or 2) because it's hard to get in and out of. It should have mechanized seats that automatically extend out, raise up and scoop the driver into the car. Then I'd give it 5 stars. Okay, so these addons are not quite Lamborghinis, but you get my point. Ah, so I've said it. But it will never change, there will always be those kinds of reviews.

Regarding Donations

I'm sometimes asked, "Where's the Donate button?" I've chosen not to use one because the layout on AMO feels too much like soliciting to me. If I start soliciting donations, I'll begin to feel like I owe my users something. There is a quote I've read: "Owe no man anything". I like that quote. But there are some who are very grateful for the benefit my software has given them, and sincerely want the opportunity to give their thanks monetarily for what they've already received - no strings attached - no promise of "further development". I don't want to deny them that. If you fit that description you can PayPal


All in all, as long as this is fun for me, I'll continue on. If it becomes fun no longer, I will move on.


Add-ons I've created

Tab Groups Helper

Create and manage tab groups in a side-by-side list-view interface, or "Groups Bar" toolbar interface. Single or multi-tab close, bookmark, or move across groups. Search for tabs by title or content in current or all groups. Much more...

Rated 5 out of 5 stars (65)
5,516 users

All Tabs Helper

Transforms "List all tabs" menu to do closing, loading, unloading, moving of single/multiple tabs. Search tab titles or *content* (remember "Find In Tabs"?), visited tabs history, find duplicate tabs - very helpful for mega-tab users. And more...

Rated 5 out of 5 stars (46)
4,487 users

Hugo Search All Tabs

Search all loaded tabs- similar to Find in Tabs, etc. except has much more functionality. This is a comprehensive tool designed for doing research. Please see screen shots and description.

Rated 5 out of 5 stars (10)
944 users

Tab Groups gBrowser API

Extends tabbrowser to include backend for creating and managing tab groups. Experimental as an alternative to Panorama due to bug 836758. API only - for use with UI developers. Devs are invited to help in debugging and development suggestions.

Not yet rated
13 users

Tab Groups gBrowser API Demo

Demo for testing Tab Groups gBrowser API

Not yet rated
7 users

My Reviews


Rated 5 out of 5 stars

I am very glad to come across this addon. Sometimes I click on several links in YouTube to open in other tabs, and I used to have to immediately go to each tab and stop each one to keep from having several videos playing simultaneously. But now, not only do I no longer have to do that, but I get the bonus of not having them load either, keeping bandwith and resource usage down.

Plus now I have an additional bonus of not having unwanted videos playing when visiting sites that do this, keeping the annoyance factor down while again, saving bandwith and resources.

Thank you for your work.

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


Excellent Addon Rated 5 out of 5 stars

This addon is extremely useful, especially for many-tab users. It gives much power to tabs functionality, and makes the concept of tabs groups something much easier to grasp, in my opinion.

It does everything it advertises. The interface is simple and easy to catch on to. I tried it on FF 23 and everything works.

Thank you teramako for your efforts.

ps: It is a shame that users dock points only because an addon does not do something they want it to do. Please rate this addon on what it does, not on what you want it to do. Then you can kindly offer the developer your suggestions.


Very Nice Little Addon Rated 5 out of 5 stars

Does all it says and more. The memory reporting seems very accurate, neck and neck with Activity Monitor (Mac OS). I have done careful benchmark testing to check out several other addons that claim on-demand recovery of memory, and they flat haven't worked.

A simple little app that fills its shoes very well. Nice job.

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