The Otter Browser Insider’s Guide
Everything we know about Otter Browser in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Otter Browser
The Insider’s Guide
Open-source Qt browser that revives the classic Opera 12 interface
Every plan, grade, refund rule and rival among browsers, read from Otter Browser’s own pages.
Made by Otter Browser project · checked Nov 13, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Otter Browser’s own pages, its app-store listings and our grades. Every fact in it is on Otter Browser’s page too, where it is kept up to date. Checked Nov 13, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
3.0
GPA, above 34 of the 60 other browsers we grade
Otter Browser is a free, open-source web browser written in C++ with Qt. It aims to recreate the best aspects of the classic Opera 12.x interface for people who want a highly customizable, lightweight browser. It is released under the GPL v3 and the project posts weekly progress reports.
To get you started, here are 8 things to know about Otter Browser, taken from its own pages and our grades.
You install a binary or AppImage and use it, with options to tune if you want.
- 1
Best for a customizable browser in the Opera 12 style
Development is slow, with about seven commits a week from one author, and the site names no macOS build.
- 2
It is free
Otter Browser has no paid plan at all. Free and open source under the GPL v3, with no paid plans.
- 3
It runs on 2 platforms
Windows and Linux.
- 4
Opera 12 style interface
The project says it aims to recreate the best aspects of the classic Opera 12.x user interface and keep its spirit alive.
- 5
Built with Qt
The browser is written primarily in C++ and uses the Qt framework.
- 6
Power-user focus
The project says it focuses on features power users want while staying fast and lightweight.
- 7
A 3.0 GPA, above 34 of 60
That is against the other browsers we grade, on value, the free plan, features, ease of use and platforms.
- 8
Keep it
Otter Browser is free, so making your own would save you nothing.
Otter Browser at a glance
- Pricing
- Free
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Windows, Linux
- Made by
- Otter Browser project
- Category
- Browsers
- Our grade
- 3.0 GPA, very good
The report card
Best for a customizable browser in the Opera 12 style
Otter is a free, open-source browser in C++ and Qt that recreates the classic Opera 12 interface. Development is slow, with about seven commits a week from one author, and the site names no macOS build.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | A | Free software under GPL v3 with no paid plan, so under 60% of this category's cheapest quarter. |
| Free plan and trial | A | The whole browser is free and open source, with no caps or paid tier. |
| Features | C | A customizable, lightweight browser for power users, with the basics but a small team behind it. |
| Ease of use | B | No rating on record. You install a binary or AppImage and use it, with options to tune if you want. |
| Platforms and integrations | C | Windows and Linux are listed. The project's site does not name macOS or any phone version. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Otter Browser is for
- Fits if you miss the classic Opera 12 layout
- Makes sense if you want a light, tweakable desktop browser
Who it is not for
- Skip it if you use a Mac or a phone, as macOS is not named
- Not for you if you want quick fixes: recent weekly reports show about seven commits by one author
- Watch out: the weekly reports show 254 open issues, including 7 bugs
- Too light for modern web apps if you rely on the newest standards
Good to know
Good for
- People who miss the classic Opera 12 interface
- Linux users who want a customizable Qt browser
- Anyone who prefers free software
Worth knowing
- The project's own site lists official binaries, with an AppImage for Linux and downloads for Windows on SourceForge; macOS is not named there.
- Development is slow: its recent weekly reports show about seven commits by one author each week.
- The weekly reports show 254 open issues, including 7 bugs.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
Free
No paid plan at all
Otter Browser is free to use.
The whole browser is free and open source, with no caps or paid tier.
Free
$0
The full browser, free software under GPL v3.
The free plan
Free and open source under the GPL v3, with no paid plans.
Read from github.com on Nov 13, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
2
Places it runs: Windows and Linux
Open-source Qt browser that revives the classic Opera 12 interface. Here is what it does, as its own site describes it, and what it covers: open source, web browser.
A customizable, lightweight browser for power users, with the basics but a small team behind it.
- Opera 12 style interface
- The project says it aims to recreate the best aspects of the classic Opera 12.x user interface and keep its spirit alive.
- Built with Qt
- The browser is written primarily in C++ and uses the Qt framework.
- Power-user focus
- The project says it focuses on features power users want while staying fast and lightweight.
- Free software
- Released under the GNU GPL v3, so anyone can read the code and contribute.
Where it runs
- Windows
- Linux
What it works with
Its own pages name no integrations.
Otter Browser is made by Otter Browser project.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
34/60
Other browsers it is graded above
Otter Browser's GPA of 3.0 is higher than 34 of the 60 other browsers we grade, and level with 9.
It stands best on value for money (A, above 22 of 60) and worst on features (C, above 2).
Otter Browser has no paid plan.
On features, ease of use and platforms it scores 2.3 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.
Each grade against the category
Every bar is all 61 browsers we grade, cut by the letter each got. Otter Browser’s own letter is outlined.
- AValue for moneyAbove 22 of 60
- AFree plan and trialAbove 21 of 60
- CFeaturesAbove 2 of 60
- BEase of useAbove 28 of 60
- CPlatforms and integrationsAbove 4 of 60
Price against what you get
Each dot is one of 54 browsers. Further left costs less; higher up scores better on features, ease of use and platforms. Otter Browser is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
Otter Browser is free, so making your own would save you nothing.
And it is not the kind of software a weekend replaces.
What you could not
- A web browser.
- A real app for Windows and Linux. Something home-made would be a web page.
What this rests on. Otter Browser’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Vivaldi, Falkon, Qutebrowser, Pale Moon and SeaMonkey
The 5 tools Otter Browser is most often weighed against, with where each one differs from it.
- 3.8GPA
Vivaldi
Free
Customizable browser with built-in mail, calendar and feed reader.
- Only Vivaldi lists macOS, Android and iOS apps.
- Otter Browser is open source, according to its own site.
- Vivaldi is end-to-end encrypted, according to its own site.
- 2.8GPA
Falkon
Free
Lightweight KDE web browser with a built-in ad blocker.
- Only Otter Browser lists a Windows app.
- Falkon also covers password manager and ad and tracker blocking.
- 2.6GPA
Qutebrowser
Free
Keyboard-driven browser with a minimal interface.
- Only Qutebrowser lists a macOS app.
- Qutebrowser also covers ad and tracker blocking.
- 3.0GPA
Pale Moon
Free
Free open-source browser on its own Goanna engine, with legacy add-ons.
- Only Pale Moon lists a macOS app.
- 3.0GPA
SeaMonkey
Free
All-in-one internet suite with browser, mail, chat and HTML editor.
- Only SeaMonkey lists a macOS app.
- SeaMonkey also covers email client and rSS reader.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
11
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Otter Browser free?
Yes. Otter Browser is free to use.
How much does Otter Browser cost?
Otter Browser lists one plan. Free: $0.
What platforms does Otter Browser work on?
Otter Browser is available on Windows and Linux.
Does Otter Browser have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Otter Browser is listed for Windows and Linux.
Does Otter Browser have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Otter Browser is listed for Windows and Linux.
Is Otter Browser open source?
Yes. Otter Browser is open source, according to its own site.
Who makes Otter Browser?
Otter Browser is made by Otter Browser project.
What are the alternatives to Otter Browser?
The closest alternatives to Otter Browser in our directory are Vivaldi, Falkon, Qutebrowser, Pale Moon and SeaMonkey.
How does Otter Browser compare with other browsers?
Otter Browser's GPA of 3.0 is higher than 34 of the 60 other browsers we grade, and level with 9.
Is Otter Browser good value for money?
ToolGPA grades Otter Browser A for value for money. Otter Browser has no paid plan.
Could I make my own version of Otter Browser?
Otter Browser is free, so making your own would save you nothing. And it is not the kind of software a weekend replaces.
Where this guide comes from
The prices, plans, platforms and features were read from Otter Browser’s own pages on Nov 13, 2026, and the grades were given on Nov 13, 2026. Graded from this listing, whose facts were read from Otter Browser project's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Otter Browser project. Prices change, so check otter-browser.org before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
7,721
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
7,721
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Otter Browser, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/otter-browser
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Otter Browser: The Insider's Guide", checked Nov 13, 2026. https://toolgpa.com/tools/otter-browser
Know someone choosing between browsers?
Send them this guide: toolgpa.com/tools/otter-browser/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded browsers after Otter Browser, each with an Insider's Guide of its own.
- Browsers Insider's GuideEvery one of the 61 browsers we grade, compared
- Brave Insider's GuideOpen-source browser that blocks ads and trackers by default3.8 GPA
- Firefox Insider's GuideFree, open-source browser from Mozilla with tracker blocking built in3.8 GPA
- Vivaldi Insider's GuideCustomizable browser with built-in mail, calendar and feed reader3.8 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Otter Browser’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Otter Browser is a trademark of its owner, and this guide is not made, paid for or approved by Otter Browser project. Prices and plans change: check otter-browser.org before you buy.