# Dex by Thirdlayer vs Do Browser

Dex by Thirdlayer records 9,262 monthly visits with +9.5% month-over-month growth and Freemium pricing. Do Browser records 0 monthly visits with — growth and Paid pricing.

| Metric | [Dex by Thirdlayer](https://openaitools.app/tool/dex-by-thirdlayer) | [Do Browser](https://openaitools.app/tool/do-browser) |
| :--- | :--- | :--- |
| Website URL | https://joindex.com | https://chromewebstore.google.com/detail/do-browser/hjcibkpfgnljonndnnanhkholafmgmip |
| Categories | AI Browsers, AI Assistant, AI Task Management | AI Browsers, AI Assistant, AI Voice Assistants |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 9,262 | 0 |
| MoM Growth Rate | +9.5% | — |
| Primary Market | United States | Global |
| Direct Visits | 5,753 | 0 |
| Review Score | 4.3 | 3.5 |
| Saved Count | 0 | 2 |
| Supported Platforms | Website | Browser Extension |

## Dex by Thirdlayer

Dex is built around the idea that agents fail when they only retrieve facts. Instead of a shallow search layer, Dex assembles two linked memory systems: an Operational Graph that records entities, relationships, timelines and dependencies across your operations, and a Knowledge Manual that holds the judgment layer — priorities, open loops, relationship context, SOPs and operating principles. The manual is explicitly editable and automatically maintained, so you stay in control of what the AI treats as true.

On top of that context, Dex runs autonomous agents that orchestrate across Gmail, Slack, CRM systems and 20+ other tools, triggered by events or schedules. Because it lives in the browser, it can also act directly in the page: navigating tabs, filling forms and completing work where the context already exists. Your operational context is portable too — an SDK and MCP support let you bring it into other agents and workflows.

Dex also improves with use. It learns from your corrections, approvals and repeated patterns. A Dreamer Agent reasons around the clock over new data to spot emerging patterns and keep your knowledge base current, while a Skill Builder Agent proposes custom automations each week based on the workflows you repeat. Typical wins include meeting prep with full history, follow-ups drafted from call notes, task triage that reflects your priorities, and CRM updates without manual data entry. Dex is available on Chrome (with iMessage, Slack and desktop clients listed as coming soon), offers 256-bit encryption, and supports private cloud deployment for teams that need data isolation.

**Pricing & Plans:** Freemium with an onboarding-based entry point. The site invites users to install Dex and then book an onboarding call; the vendor also mentions talking to them about private cloud, which is typically an enterprise conversation. No public price list is published, so check the site for current plan details.

- **Operational Graph:** A living organisational record that organises every message, meeting, deal update and workflow event into entities, relationships, timelines and dependencies.
- **Knowledge Manual:** An editable, automatically maintained layer for priorities, open loops, SOPs and operating principles — the judgment side of your assistant.
- **Autonomous agents:** Agents that orchestrate across Gmail, Slack, CRM and 20+ tools, triggered by events or on a schedule.
- **Browser control:** Dex can navigate tabs, fill forms and complete tasks directly in your browser, cutting context switching.
- **Dreamer and Skill Builder agents:** One reasons 24/7 over new data to keep context current; the other proposes custom automations weekly from your repeated workflows.
- **SDK and MCP access:** Bring your operational context into any other agent, tool or workflow you already use.

**Strengths:** Differentiated memory model that separates factual retrieval from judgment-based reasoning; Browser-first design means it works where your context already lives; Acts as well as answers: agents execute tasks across Gmail, Slack, CRM and more; Context is portable via SDK and MCP rather than locked inside one chat window

**Limitations:** Onboarding is currently invite/call-based rather than fully self-serve; Requires connecting several tools and some ramp-up before the context compounding pays off; No public price list, so budgeting requires contacting the vendor; Some clients (iMessage, Slack, desktop) are still listed as coming soon

[Profile (Markdown)](https://openaitools.app/tool/dex-by-thirdlayer.md)

## Do Browser

Do Browser is a Chrome extension that turns natural-language requests into real browser actions. Instead of writing scripts or recording macros, you describe the outcome, for example a page you want scraped or a form you want completed, and the agent works through the steps itself: opening pages, locating buttons, entering text and reading on-screen content the way a person would. It advertises support for any website, spanning shopping sites, social platforms and internal business tools.

Beyond clicking and typing, Do Browser can generate and run code in the background to scrape or automate more efficiently, work across multiple browser tabs at once, and deliver collected information as downloadable CSV files or spreadsheets. Typical uses include web scraping, price comparison, drafting social posts, capturing screenshots and working through complicated web interfaces.

The extension uses a subscription model at $25 per month with a 7-day free trial, and it also offers a bring-your-own-key route where you can use your own Gemini API key or Claude subscription at no extra cost. It is published by the team behind dobrowser.io and is aimed at people who want automation but do not want to code.

**Pricing & Plans:** $25/month with a 7-day free trial, cancel anytime. A free option is available if you bring your own Gemini API key or Claude subscription.

- **Natural-language commands:** Describe the task in ordinary sentences and the agent figures out the clicks, typing and navigation needed.
- **Visual page understanding:** The AI interprets pages much like a person does, finding buttons and following flows even on unfamiliar layouts.
- **Data export:** Download the information it gathers as CSV files and spreadsheets ready for further analysis.
- **Background code generation:** Writes and runs code behind the scenes to scrape or automate tasks more efficiently.
- **Multi-tab support:** Works across several browser tabs at the same time for broader tasks.

**Strengths:** No coding required to automate tasks; Works on virtually any website; Exports collected data to CSV and spreadsheets; Free option via your own Gemini key or Claude subscription

**Limitations:** Full subscription costs $25 per month; Rating sits around 3.3 out of 5 from user reviews; Requires granting the extension broad browser access

[Profile (Markdown)](https://openaitools.app/tool/do-browser.md)

## Frequently Asked Questions

### How do Dex by Thirdlayer and Do Browser compare in monthly traffic?

Dex by Thirdlayer has 9,262 monthly visits, while Do Browser has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Dex by Thirdlayer has a month-over-month growth rate of +9.5%; Do Browser has —.

### How does pricing compare?

Dex by Thirdlayer: Freemium. Freemium with an onboarding-based entry point. The site invites users to install Dex and then book an onboarding call; the vendor also mentions talking to them about private cloud, which is typically an enterprise conversation. No public price list is published, so check the site for current plan details. Do Browser: Paid. $25/month with a 7-day free trial, cancel anytime. A free option is available if you bring your own Gemini API key or Claude subscription.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | All-in-one AI assistant across web, browser, desktop and mobile | [.md](https://openaitools.app/tool/monica-ai.md) |
| 2 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | [.md](https://openaitools.app/tool/sider.md) |
| 3 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | One-click AI assistant for browsing, writing and research | [.md](https://openaitools.app/tool/merlin-ai.md) |
| 4 | [Dia Browser](https://openaitools.app/tool/dia-browser) | 1,254,172 | +108.4% | Free | The AI browser that reads between your tabs | [.md](https://openaitools.app/tool/dia-browser.md) |
| 5 | [Tabbit Browser](https://openaitools.app/tool/tabbit-ai) | 670,981 | -30.2% | Freemium | The agentic AI browser that reads your tabs, files, and screenshots as context | [.md](https://openaitools.app/tool/tabbit-ai.md) |
| 6 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | One browser agent that combines every major AI model with web automation | [.md](https://openaitools.app/tool/harpa-ai.md) |
| 7 | [Sigma AI Browser](https://openaitools.app/tool/sigma-ai-browser) | 240,775 | -47.1% | Free | A private Chromium browser with a built-in AI agent and offline LLM | [.md](https://openaitools.app/tool/sigma-ai-browser.md) |
| 8 | [Opera Neon](https://openaitools.app/tool/opera-neon) | 133,006 | -9.5% | Paid | An agentic browser built to act on your behalf | [.md](https://openaitools.app/tool/opera-neon.md) |
| 9 | [BrowserAct](https://openaitools.app/tool/browseract) | 99,679 | -15.2% | Freemium, Paid, Credit-based, Contact for Pricing | No-code AI web scraping that builds, runs, and repairs its own bots | [.md](https://openaitools.app/tool/browseract.md) |
| 10 | [SigmaOS Airis (Alpha)](https://openaitools.app/tool/sigmaos-airis-alpha) | 90,910 | +9.2% | Freemium | A Mac browser built for focus, with an AI companion called Airis | [.md](https://openaitools.app/tool/sigmaos-airis-alpha.md) |

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Source: https://openaitools.app/compare/dex-by-thirdlayer-vs-do-browser

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