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281 points felarof | 1 comments | | HN request time: 0.238s | source

Hey HN, we're a YC startup building an open-source, privacy-first alternative to Perplexity Comet.

No invite system unlike bunch of others – you can download it today from our website or GitHub: https://github.com/browseros-ai/BrowserOS

--- Why bother building an alternative? We believe browsers will become the new operating systems, where we offload much bunch of our work to AI agents. But these agents will have access to all your sensitive data – emails, docs, on top of your browser history. Open-source, privacy-first alternatives need to exist.

We're not a search or ad company, so no weird incentives. Your data stays on your machine. You can use local LLMs with Ollama. We also support BYOK (bring your own keys), so no $200/month plans.

Another big difference vs Perplexity Comet: our agent runs locally in your browser (not on their server). You can actually watch it click around and do stuff, which is pretty cool! Short demo here: https://bit.ly/browserOS-demo

--- How we built? We patch Chromium's C++ source code with our changes, so we have the same security as Google Chrome. We also have an auto-updater for security patches and regular updates.

Working with Chromium's 15M lines of C++ has been another fun adventure that I'm writing a blog post on. Cursor/VSCode breaks at this scale, so we're back to using grep to find stuff and make changes. Claude code works surprisingly well too.

Building the binary takes ~3 hours on our M4 Max MacBook.

--- Next? We're just 2 people with a lot of work ahead (Firefox started with 3 hackers, history rhymes!). But we strongly believe that a privacy-first browser with local LLM support is more important than ever – since agents will have access to so much sensitive data.

Looking forward to any and all comments!

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dockercompost ◴[] No.44536066[source]
I didn't realize you all had changed your name and I'd already installed Nxtscape and thought something was wrong when I opened up BrowserOS and saw the same UI and fox emoji icon in the chat. btw I'm not gonna lie, I liked your old name better. I'm guessing you changed it for legal reasons?

I tested it out asking it to summarize the comments of an Arstechnica article and at first it said:

> I am unable to summarize the comments as the provided page content only contains the article itself, not the comments section. The extract tool does not appear to be able to access the comments on this page.

I had to tell it to click on the "comments" link for it to actually start going through the comments. For reference, there's 3 pages of comments and it's taken more than 20 minutes and performed around 100 actions, with lots of those actions being scrolling down a very specific 1074 pixels. I am currently sitting here still waiting for the actual summary while it says "Validating task completion..."

Seems like it could be powerful, but the hand holding required and extremely slow speed make it unusable for me at this point.

Since I had Nxtscape installed, I tried the same experiment and it successfully did it in less time with fewer actions. Not sure if that's just random chance or if there's different logic running under the hood.

One final note: There's a Chrome extension that lets you use your iCloud passwords in Chrome and it doesn't work in either Nxtscape or BrowserOS. I'm not likely to use a browser that requires regularly having to go into my password manager to manually retrieve usernames and passwords, and I'm not changing my password manager for this.

replies(1): >>44536717 #
1. felarof ◴[] No.44536717[source]
Yeah, decided to change the name to avoid any troubles. Also, previous name was hard to pronounce :)

Thank you for the feedback. Would love to chat more on discord (https://discord.gg/YKwjt5vuKr) and help you with your use-cases! we are shipping daily and improving things fast, agent should get much better in a few days.

> There's a Chrome extension that lets you use your iCloud passwords in Chrome and it doesn't work

Will check it out! We definitely want to make onboarding and password mgmt much easier!