# Dex by Thirdlayer vs Siket

Dex by Thirdlayer records 9,262 monthly visits with +9.5% month-over-month growth and Freemium pricing. Siket records 1,559 monthly visits with +32% growth and Freemium pricing.

| Metric | [Dex by Thirdlayer](https://openaitools.app/tool/dex-by-thirdlayer) | [Siket](https://openaitools.app/tool/siket) |
| :--- | :--- | :--- |
| Website URL | https://joindex.com | https://siket.app |
| Categories | AI Browsers, AI Assistant, AI Task Management | AI Productivity Tools, AI Assistant, AI Task Management, AI Browsers |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 9,262 | 1,559 |
| MoM Growth Rate | +9.5% | +32% |
| Primary Market | United States | Global |
| Direct Visits | 5,753 | 455 |
| Review Score | 4.3 | 4.3 |
| Saved Count | 0 | 1 |
| Supported Platforms | Website | Website |

## 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)

## Siket

Siket is designed around a simple idea: your browser is already open all day, so the workspace should live there. Installing the extension turns your new tab into a productivity dashboard and adds a floating side panel you can summon on any page. The layout is deliberately quiet — no streak counters, no gamified ceremony — so the tool steps back until you reach for it.

The task system is flexible but structured. Everything you capture lands in an Inbox; what you commit to today moves to Today; everything else waits in Next week, project lists, or personal lists. You can view the same list as a list, board, table, or calendar using keys 1–4, and start from ready-made templates for weekly reviews, project kickoffs, or deep-work blocks. A focus timer, tab sessions, notes, and bookmarks round out the daily loop.

On top of that sits an AI agent that plans, prioritizes, summarizes, and drafts. It also connects to tools you already use — Google Calendar, Gmail, Notion, Slack, GitHub, Linear, Todoist, Drive, and others — so planning can draw on real commitments. Payments run through Stripe, and the team states that your data stays yours with secure sessions and real account deletion.

**Pricing & Plans:** Siket has a permanent Free plan with no card required, covering the full workspace: lists, all four views, templates, due dates, themes, and cross-device sync. Paid Pro and Advanced tiers add more capacity and priority support, billed monthly or yearly through Stripe. You can cancel anytime and delete your account from Settings.

- **Four task views:** One list, four ways to see it. Switch between list, board, table, and calendar with number keys 1–4 without moving a single task.
- **Tab sessions:** Save a research trail — a launch, a bug hunt, a reading list — as a tab session and restore the whole set with one click instead of rebuilding bookmarks.
- **Inbox, Today and projects:** Tasks live in Inbox, Today, Next week, project lists, and personal lists. Details stay folded inside each task until you open it, keeping the list short.
- **Focus timer and command palette:** A quiet Pomodoro-style focus timer and a keyboard-first command palette keep deep work moving without reaching for the mouse.
- **Built-in AI agent:** An AI agent inside the workspace plans your day, prioritizes work, summarizes feedback, and drafts copy. Tag context with @context to scope what it reads.
- **Side panel and web capture:** A floating panel on any page in Chrome, Edge, and Brave lets you save pages to your inbox, capture notes with a backlink, or start a timer.

**Strengths:** Replaces a pile of tabs and standalone apps with one new tab workspace; Keyboard-first design with a command palette and number-key view switching; Free tier is genuinely usable with no card and no time limit; Floating side panel captures notes and pages on any website

**Limitations:** Best experienced in Chromium-based browsers; other browsers have limited support; AI agent quality depends on how clearly you state the task; Task capacity and extra AI automation sit behind paid tiers; No native mobile app — it runs through the browser, though cross-device sync works

[Profile (Markdown)](https://openaitools.app/tool/siket.md)

## Frequently Asked Questions

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

Dex by Thirdlayer has 9,262 monthly visits, while Siket has 1,559. 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%; Siket has +32%.

### 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. Siket: Freemium. Siket has a permanent Free plan with no card required, covering the full workspace: lists, all four views, templates, due dates, themes, and cross-device sync. Paid Pro and Advanced tiers add more capacity and priority support, billed monthly or yearly through Stripe. You can cancel anytime and delete your account from Settings.

## 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 | [Merlin AI](https://openaitools.app/tool/merlin-ai-plugins) | 1,382,634 | +13.1% | Freemium | One AI assistant that plugs ChatGPT, Claude and Gemini into every tab | [.md](https://openaitools.app/tool/merlin-ai-plugins.md) |
| 5 | [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) |
| 6 | [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) |
| 7 | [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) |
| 8 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Summarize, bookmark and write with AI right in your browser | [.md](https://openaitools.app/tool/kome-ai.md) |
| 9 | [Routine](https://openaitools.app/tool/routine-co) | 144,581 | -14.5% | Freemium | One AI-powered workspace for tasks, calendars, notes and meetings | [.md](https://openaitools.app/tool/routine-co.md) |
| 10 | [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) |

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

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