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AI · alternatives · 2026

24 alternatives to Cerebellum – Open-Source Browser Control with Claude 3.5 Computer Use

Hi HN! I was mesmerized by the Claude Computer Use reveal last week and was specifically impressed by how well it navigated websites. This motivated me to create Cerebellum, a library that lets an LLM take control of a browser. Here is a demo of Cerebellum in action, performing the goal “Find a USB C to C cable that is 10 feet long and add it to cart” on amazon.com: https://youtu.be/xaZbuaWtVkA?si=Tq9lE6BXv9wjZ-qC Currently, it uses Claude 3.5 Sonnet’s newly released computer use ability, but the ultimate goal is to crowdsource a high quality set of browser sessions to train…

Cerebellum is an open-source library that enables large language models to control and navigate web browsers autonomously. Built with Claude 3.5 Sonnet's computer use capabilities, it can perform tasks like searching… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 2 we have checked on their own sites, 2 of them free or with a free tier. Cerebellum – Open-Source Browser Control with Claude 3.5 Computer Use launched in 2024; newer entries below may have overtaken it.

  1. 1

    Hey HN! I'm excited to show off Cerebellum, a new open-source tool designed to automate browser tasks using large language models (LLMs). Cerebellum is an LLM-based AI agent that interacts with web sites using mouse and keyboard interactions, much like you would. So it works on web sites whether or not they have an API. The only requirement is that you use a Selenium-supported browser like Chrome, Firefox, or Safari. It’ll even work on Electron apps with a bit of setup! Furthermore, Cerebellum is open-source! We’d love both your feedback and contributions. The GitHub repo is here:…

    2024 · github.com · its alternatives →

  2. 2

    Computer use for automating operations

    2024 · anthropic.com · its alternatives →

  3. 3

    I think LLMs are overused to summarise and underused to help us read deeper. I built a system for Claude Code to browse 100 non-fiction books and find interesting connections between them. I started out with a pipeline in stages, chaining together LLM calls to build up a context of the library. I was mainly getting back the insight that I was baking into the prompts, and the results weren't particularly surprising. On a whim, I gave CC access to my debug CLI tools and found that it wiped the floor with that approach. It gave actually interesting results and required very little orchestration…

    Jan 2026 · trails.pieterma.es · its alternatives →

  4. 4

    Claude Opus 4.7 is Anthropic's most capable generally available model, released April 16, 2026. It outperforms Opus 4.6, GPT-5.4, and Gemini 3.1 Pro on key benchmarks including agentic coding, multidisciplinary reasoning, scaled tool use, and agentic computer use. It is benchmarked below Claude Mythos Preview — which remains restricted to Project Glasswing partners. https://vucense.com/ai-intelligence/ai-tools/claude-opus-4-7...

    2025 · anthropic.com · its alternatives →

  5. 5

    Let Claude see, click, type, and navigate in your browser

    Dec 2025 · claude.ai · its alternatives →

  6. 6
    Peek▲404

    Hey HN, My cofounder and I have gotten tired of CC ignoring our markdown files so we spent 4 days and built a plugin that automatically steers CC based on our previous sessions. The problem is usually post plan-mode. What we've tried: Heavily use plan mode (works great) CLAUDE.md, AGENTS.md, MEMORY.md Local context folder (upkeep is a pain) Cursor rules (for Cursor) claude-mem (OSS) -> does session continuity, not steering We use fusion search to find your CC steering corrections. - user prompt embeddings + bm25 - correction embeddings + bm25 - time decay - target query embeddings -…

    2024 · gopeek.ai · its alternatives →

  7. 7
    Glance ▲87

    Real browser for Claude Code Test, Screenshot, Automate

    Mar 2026 · glance.debugbase.io · its alternatives →

  8. 8

    Let Claude use your computer from the CLI

    Mar 2026 · code.claude.com · its alternatives →

  9. 9
    Rill Browserfree▲540

    The browser where Claude Code and Codex work beside you

    18d ago · rill.love · its alternatives →

  10. 10

    Hey HN, I made Browser-Use, an open-source tool that lets (all Langchain supported) LLMs execute tasks directly in the browser just with function calling. It allows you to build agents that interact with web elements using natural language prompts. We created a layer that simplifies website interaction for LLMs by extracting xPaths and interactive elements like buttons and input fields (and other fancy things). This enables you to design custom web automation and scraping functions without manual inspection through DevTools. Hasn't this been done a lot of times? Good question, as a general…

    2024 · github.com · its alternatives →

  11. 11

    Store, review, and share your Claude Code sessions

    Mar 2026 · bench.silverstream.ai · its alternatives →

  12. 12

    Hello everyone. Claudraband wraps a Claude Code TUI in a controlled terminal to enable extended workflows. It uses tmux for visible controlled sessions or xterm.js for headless sessions (a little slower), but everything is mediated by an actual Claude Code TUI. One example of a workflow I use now is having my current Claude Code interrogate older sessions for certain decisions it made: https://github.com/halfwhey/claudraband?tab=readme-ov-file#s... This project provides: - Resumable non-interactive workflows. Essentially `claude -p` with session support: `cband continue…

    Apr 2026 · github.com · its alternatives →

  13. 13

    Hey HN, We got tired of browser frameworks restricting the LLM, so we removed the framework and gave the LLM maximum freedom to do whatever it's trained on. We gave the harness the ability to self correct and add new tools if the LLM wants (is pre-trained on) that. Our Browser Use library is tens of thousands of lines of deterministic heuristics wrapping Chrome (CDP websocket). Element extractors, click helpers, target managemenet (SUPER painful), watchdogs (crash handling, file downloads, alerts), cross origin iframes (if you want to click on an element you have to switch the target first,…

    Apr 2026 · github.com · its alternatives →

  14. 14

    I got tired of sharing AI demos with terminal screenshots or screen recordings. Claude Code already stores full session transcripts locally as JSONL files. Those logs contain everything: prompts, tool calls, thinking blocks, and timestamps. I built a small CLI tool that converts those logs into an interactive HTML replay. You can step through the session, jump through the timeline, expand tool calls, and inspect the full conversation. The output is a single self-contained HTML file — no dependencies. You can email it, host it anywhere, embed it in a blog post, and it works on mobile. Repo:…

    Mar 2026 · github.com · its alternatives →

  15. 15

    We built an open-source proxy that sits between coding agents (Claude Code, OpenClaw, etc.) and the LLM, compressing tool outputs before they enter the context window. Demo: https://www.youtube.com/watch?v=-vFZ6MPrwjw#t=9s. Motivation: Agents are terrible at managing context. A single file read or grep can dump thousands of tokens into the window, most of it noise. This isn't just expensive — it actively degrades quality. Long-context benchmarks consistently show steep accuracy drops as context grows (OpenAI's GPT-5.4 eval goes from 97.2% at 32k to 36.6% at 1M…

    Mar 2026 · github.com · its alternatives →

  16. 16GC

    As I started to use Claude Code to do more random tasks I realized I could basically build any CLI tool and it would use it. So I built one that controls the browser and open-sourced it. It should work with Codex or any other CLI-based agent! I have a long term idea where the models are all local and then the tool is privacy preserving because it's easy to remove PII from text, but I'd definitely not recommend using this for anything important just yet. You'll need a Gemini key until I (or someone else) figure out how to distill a local version out of that part of the pipeline. Github link:…

    2025 · cli-agents.click · its alternatives →

  17. 17
    Straude▲155

    Just like how Strava made running more social & fun, Straude connects you to other motivated Claude Code builders so you can share your wins, encourage each other, and climb the token usage leaderboard! This was my submission to the Built with Opus 4.6: a Claude Code hackathon: https://cerebralvalley.ai/e/claude-code-hackathon

    Apr 2026 · straude.com · its alternatives →

  18. 18

    I kept hitting Claude's 5-hour limit without realizing it, so I made this menu bar app to track it. Shows a color-coded ring (green/orange/red) and countdown to reset. Built it in Swift/SwiftUI, just for myself initially. Right now you have to manually grab your sessionKey from browser DevTools, which is annoying but works. Stores it in macOS Keychain so it's secure. Been actively working on it, already at v1.3.0 with much better UX now. It's open source (MIT) and works with all Claude platforms (web/CLI/desktop/mobile) since they share the quota. Currently…

    Oct 2025 · github.com · its alternatives →

  19. 19
    tterm▲109

    A terminal, a real browser, and Claude Code under one roof

    Jul 2026 · tterm.sh · its alternatives →

  20. 20

    Browse, search & track costs across Claude Code sessions

    Apr 2026 · claudoscope.com · its alternatives →

  21. 21
    WebBrain▲117

    The sidebar agent for the rest of us

    Aug 2026 · webbrain.one · its alternatives →

  22. 22
    AlliHat▲96

    I think we all have a similar flow and pain with browsers and AI. Copy article, paste in Claude tab, come back to article, back to Claude, in circles we go. Anthropic has a Chrome extension, but my daily driver is Safari. So I made my own extension. It's not a clone as I've never used the Chrome version. One obvious change: the Chrome version I believe uses Chrome "request sidebar" thing. And Safari doesn't have that, so had to inject the sidebar right in the site html itself. There's been some fun things in here like figuring out the sidebar html/css sandboxing. Also there's an agent…

    May 2026 · allihat.com · its alternatives →

  23. 23

    One Brain. Any Tool.

    Jul 2026 · cerebrumma.com · its alternatives →

  24. 24

    Hey, HN! I'm Aaron. I built an open-source Lovable for Claude Code users. Platforms like Lovable, Replit Agent, and Bolt require separate API keys and $25+/month subscriptions. But if you’re already subscribed to Claude Pro or Cursor, you can use those plans directly without extra costs. Claudable runs entirely locally through Claude Code (Cursor CLI also supported) and provides: - Instant UI preview (similar to Lovable) - Web-optimized, production-ready designs - Direct Git integration - One-click Vercel deployment - Zero additional API costs It’s open source and available today. I’m…

    2025 · github.com · its alternatives →

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