# Sider vs TabX

Sider records 2,644,740 monthly visits with -10.6% month-over-month growth and Freemium pricing. TabX records 0 monthly visits with — growth and Freemium pricing.

| Metric | [Sider](https://openaitools.app/tool/sider) | [TabX](https://openaitools.app/tool/tabx) |
| :--- | :--- | :--- |
| Website URL | https://sider.ai | https://chromewebstore.google.com/detail/tabx/bdmeibkfombnjpgjpokdpkbbmfbnmafl |
| Categories | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader | AI Productivity Tools, AI Search Engine, AI Assistant, AI Browsers |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 2,644,740 | 0 |
| MoM Growth Rate | -10.6% | — |
| Primary Market | United States | Global |
| Direct Visits | 1,699,535 | 0 |
| Review Score | 4.5 | 4.3 |
| Saved Count | 31 | 0 |
| Supported Platforms | Website | Browser Extension |

## Sider

Sider's premise is that you should not have to leave the page you are reading to use an AI assistant. Its sidebar overlays the browser, detects the content in view, and responds with chat, summaries, translations or explanations using frontier models from multiple providers. The result is a lightweight research and reading workflow: highlight a paragraph, ask for a simpler explanation, translate a PDF and keep the original in sight.

Recent versions push Sider beyond chat. Sider Hand is a browser agent that works across real websites and uses your logged-in sessions to carry out multi-step jobs such as comparing prices while shopping, filling forms, doing cross-site research or triaging a Gmail inbox. Sider Code goes the other way, letting you instruct changes to a website's appearance or behaviour in plain language and preserving the customisation for next time. A Create module generates images, videos, slides and documents from the same panel.

Pricing moves from a limited free tier to credit-based paid plans aimed at heavier users. Lower plans suit occasional chat, summarisation and translation, while higher tiers add a dedicated cloud computer that keeps the browser agent running around the clock and a larger monthly credit allowance. Sider ships as browser extensions for Chrome and Edge plus desktop and mobile apps for macOS, Windows, iOS and Android, and is used by a very large installed base.

**Pricing & Plans:** Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

- **AI sidebar on any page:** A persistent panel that reads the page you are on and answers follow-ups with GPT, Claude or Gemini without copying content into another tab.
- **Summarise and chat with documents:** Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
- **Translation and read-aloud:** Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
- **Sider Hand browser agent:** Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.
- **Sider Code page customisation:** Describe a change in plain words and have Sider restyle or simplify any website, remembering the modification for future visits.

**Strengths:** Works inside the browser you already use, with no context switching; Access to multiple frontier models from one subscription; Strong reading toolkit: PDF chat, YouTube summaries, translation and read-aloud; Increasingly capable agent features for multi-step browser tasks

**Limitations:** Useful credits run out quickly on the free and lower tiers; Model availability and quota rules change over time, so expectations must be checked per plan; Some agent and code features depend on a cloud machine and heavier plans

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

## TabX

TabX positions itself as the memory and organization layer that simple page assistants lack. Instead of answering questions only about the page currently on screen, it keeps a private, per-user index of everything you have browsed, so a vague description like "the pricing breakdown I read three weeks ago" can surface the exact page again. The side panel opens with Ctrl+I (Cmd+I on Mac) directly on any site.

Beyond recall, TabX organizes your working session. Open tabs automatically cluster into named, color-coded Chrome groups by intent, and your visits are auto-assembled into named research 'journey' timelines that can be reopened in the original browsing order with one click. You can @mention any tab, stack, or timeline to ask a question and get answers grounded in, and cited back to, the pages you actually read. It also offers an ad-free AI web search that returns three to five hand-ranked links with a short answer and suggested reading order, then opens results scrolled to the exact passage.

The team emphasizes privacy: content is indexed into your own private cloud memory, de-duplicated, never captures password fields, and is never sold or shared. You can request a memory wipe by email. TabX works notably well on heavy web apps such as Gmail, GitHub, ChatGPT, WhatsApp Web, and YouTube.

**Pricing & Plans:** Free to use: saving and remembering pages is free forever, with a daily taste of Pro features. Pro costs about $20/month or $200/year and unlocks unlimited AI recall, @mention chat, and ad-free AI web search; it starts with a 7-day free trial and no card is required to begin.

- **Recall by meaning:** Describe a page you read weeks ago and TabX finds it even if the tab was closed, using semantic search that matches intent rather than exact keywords.
- **@mention your tabs:** Mention any tab, stack, or journey timeline in the chat and get streaming answers grounded in and cited back to the pages you actually read.
- **Journey-map timelines:** Your visits auto-organize into named research sessions that can be reopened in one click, restoring every page in the chronological order you browsed them.
- **Color-coded intent stacks:** Open tabs automatically cluster into named, colored Chrome tab groups so you stay focused by topic without manual tagging.
- **Ad-free AI web search:** Flip to Online mode to get three to five hand-ranked, ad-free links per query plus a short answer and suggested reading order, with results opening on the exact highlighted passage.

**Strengths:** Gives your existing Chrome a persistent, searchable memory instead of forcing a browser migration; Combines recall, tab grouping, timelines, and ad-free AI search in one side panel; Answers are cited back to the pages you actually read; Privacy-conscious design: de-duplicated memory, no password capture, never sold or shared

**Limitations:** Core AI recall, @mention chat, and ad-free search are gated behind the Pro subscription; AI recall depends on keeping your browsing indexed into a cloud memory, which some users may not want; Best experience requires permission to read page content and browsing history

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

## Frequently Asked Questions

### How do Sider and TabX compare in monthly traffic?

Sider has 2,644,740 monthly visits, while TabX has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Sider has a month-over-month growth rate of -10.6%; TabX has —.

### How does pricing compare?

Sider: Freemium. Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans. TabX: Freemium. Free to use: saving and remembering pages is free forever, with a daily taste of Pro features. Pro costs about $20/month or $200/year and unlocks unlimited AI recall, @mention chat, and ad-free AI web search; it starts with a 7-day free trial and no card is required to begin.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) |
| 2 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) |
| 3 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools. | [.md](https://openaitools.app/tool/monica-ai.md) |
| 4 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features. | [.md](https://openaitools.app/tool/merlin-ai.md) |
| 5 | [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) |
| 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 | [AI Toolbox](https://openaitools.app/tool/chatgpt-toolbox) | 290,140 | +16.9% | Freemium | Organize, search and export your AI chats across ChatGPT, Gemini, Claude and Grok | [.md](https://openaitools.app/tool/chatgpt-toolbox.md) |
| 9 | [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | -49.6% | Freemium | Summarize YouTube, Google, and any page with AI — free in your browser | [.md](https://openaitools.app/tool/glarity-summarize-google-and-youtube.md) |
| 10 | [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) |

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Source: https://openaitools.app/compare/sider-vs-tabx

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