That is Thunderbird on Desktop, which uses Firefox ESR. Thunderbird on Android uses K-9 Mail's codebase.
Source available is closed source by the OSI definition, which is what is widely used and understood. The "closed" in closed source doesnt only refer to source visibility but also the freedoms upheld by open source.
Your comment I was replying to said "I don't know where you are reading that Vivaldi is closed source. The source code is right here: https://vivaldi.com/source/". I was responding to that with Vivaldi's statement about how the browser is closed source.
In your original comment you illude to it being neither open or closed source, which is not true either since it is closed source. Maybe you meant source available? I didnt read anywhere saying that.
Brave added affiliate links to URLs. While I agree this is quite shady, it is not much different from how Vivaldi makes money. Also Vivaldi is not open source and doesnt come close to Brave or Librewolf in privacy tests. Vivaldi's fingerprinting protections are incomplete (it seems they stopped at canvas randomization?), it features a weak built-in content blocker, and has an insecure default config (JS JIT and WASM are enabled). I would compare it to default ungoogled chromium + basic adblocker. Vivaldi is no where close to Librewolf or Brave in terms of adblocking, anti-fingerprinting, and browser security hardening. Vivaldi is a neat browser, but a privacy one? I don't think so.
EDIT: Here are some links. Privacytests.org is a precomputed comparison table, the other two sites are fingerprinting sites which give a better idea of how much must be protected for adequate anti-fingerprinting.
Independent browser Privacy tests: https://privacytests.org/
CreepJS fingerprinting site: https://abrahamjuliot.github.io/creepjs/
Firefox Arkenfox fingerprinting test site: https://arkenfox.github.io/TZP/tzp.html
Vivaldi is closed source, they say so on their website. I don't like the CEO of Brave, neither do I like the crypto nonesense, but arguing that Vivaldi is better for privacy (let alone vanilla chrome) is incredibly incorrect. Brave actually does a decent job of anti-fingerprinting and has strong site isolation. I prefer Cromite because it isnt associated with Brave or any crypto.
Browser comparison table by the developer of DivestOS: https://divestos.org/pages/browsers
I would never use Vivaldi just because it is closed source, doesnt add proper fingerprinting protections, and does not provide a secure default config. Cromite and Brave are better options (for me).
Is there any good reason to use Vivaldi? Nice to see more scripts from you. I have been thinking about making some scripts to automate the deployment of Bubblejail profiles for different apps. I don't run nearly anything without sandboxing, and Bubblejail does not interfer with the Chromium sandbox.
It does not use adblock plus lists directly. The lists are hosted by Cromite. uBlock Origin is not available for any android chromium browser (other than kiwi I guess). The adblocker works well from my tests. I recommend adding filterlists from https://divested.dev/pages/dnsbl
Use Cromite. Fully open source, adblocking, and security hardened. See this browser table for conparisons: https://divestos.org/pages/browsers
Image alt text: Picture of a tea box with the text "Gunpowder Tea" in large letters and underneath in smaller letters "China Green Tea".
Alt text:
Description: 3 panel comic of someone interacting with a cop during traffic stop
Conversation: Cop says "Do you know why I stopped you?" Driver responds "Because you're a class traitor?" Cop is too stunned to speak.
Alt text: Child playing with a kendama-like toy with the catching mechanism and ball being each half of the demon core experiment.
Image transcription...
Instead of X say Y
| have a concussion = I'm in my bonked-up state.
I'm concussed = I'm all bonked up.
My brain is bruised = I've got a BrainBonk TM.
I'm in my concussion era = It's serving gonked gourd.
My concussion may affect the quality of my work = Getting my concussy slonked silly style.
Image transcription: 'Today, I operated on a little girl. She needed O- blood. We didn't have any, but her twin brother has O- blood. I explained to him that it was a matter of life and death. He sat quietly for a moment, and then said goodbye to his parents. I didn’t think anything of it until after we took his blood and he asked, “So when will I die?” He thought he was giving his life for hers. Thankfully, they both died'
Alt text: "I just realised the lid on medicine bottles is a serving size." Don't do that obviously, unless your goal is to meet the hatman in the ER.
Since it is source available, it isnt open source and therefore closed source.
Edit: we obviously have different definitions. I did not mean to argue over semantics. I would personally never trust a browser with proprietary code, even it is source available.