# Sider vs TabTamer

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

| Metric | [Sider](https://openaitools.app/tool/sider) | [TabTamer](https://openaitools.app/tool/tabtamer) |
| :--- | :--- | :--- |
| Website URL | https://sider.ai | https://chrome.google.com/webstore/detail/tabtamer/nocccdpimiknfehopnbldcgiipebjjpj |
| Categories | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader | AI Browsers, AI Productivity Tools, AI Workflow, AI Task Management |
| Pricing Model | Freemium | Free |
| 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 | 1.8 |
| Saved Count | 31 | 1 |
| 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)

## TabTamer

TabTamer is a free Chrome extension with a very specific idea behind it: let you group your browser tabs by simply describing what you want, rather than fiddling with manual drag-and-drop or rigid rules. You type a prompt, and the extension uses OpenAI's GPT-3 to decide which of your open tabs belong together and applies the grouping for you.

The setup is deliberately lightweight. You install the extension from the Chrome Web Store and add your own OpenAI API key; the instructions for doing so appear the first time you install it. According to the developer, the key is stored safely in your browser's memory and never leaves the browser apart from the requests it makes to the OpenAI API, which keeps you in control of your own credentials and OpenAI billing.

The trade-off is age: TabTamer's only version, 1.0, dates from April 2023 and it is built on GPT-3, so it predates today's cheaper and more capable models. Its Chrome Web Store rating is modest and its user base small. It still installs and works for what it does, and because you bring your own key there is no subscription cost from the developer — but if you want the latest models or active maintenance, newer AI tab groupers may be a better fit. It is independent software, not an official Google or OpenAI product.

**Pricing & Plans:** TabTamer is free to install and use. There is no developer subscription, but you must supply your own OpenAI API key, so OpenAI bills you directly for any API usage the extension generates.

- **Prompt-based grouping:** Type a plain-language prompt describing how you want tabs grouped, and TabTamer uses GPT-3 to do the sorting.
- **AI-powered classification:** Uses OpenAI's GPT-3 to decide which tabs belong together, so you do not have to define manual rules.
- **Bring your own OpenAI key:** Install from the Chrome Web Store and add your own OpenAI API key; instructions are shown when you first install.
- **Local key handling:** The developer states your API key is stored in your browser and never leaves it except for requests to the OpenAI API.

**Strengths:** Free extension with no developer subscription; Grouping driven by a plain-language prompt is quick and flexible; Bring-your-own-key design keeps you in control of credentials and billing; Simple, focused single-purpose tool

**Limitations:** Requires your own OpenAI API key, adding setup and a dependency on your own OpenAI account; Uses older GPT-3, so grouping quality may trail modern models; Low rating and small user base, and the listing has not been updated since 2023

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

## Frequently Asked Questions

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

Sider has 2,644,740 monthly visits, while TabTamer 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%; TabTamer 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. TabTamer: Free. TabTamer is free to install and use. There is no developer subscription, but you must supply your own OpenAI API key, so OpenAI bills you directly for any API usage the extension generates.

## 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 | [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 | [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) |
| 8 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider. | [.md](https://openaitools.app/tool/kome-ai.md) |
| 9 | [Voilà — AI Assistant, Chat and Writer](https://openaitools.app/tool/voil-chatgpt-browser-assistant) | 152,170 | -4.8% | Freemium | Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools. | [.md](https://openaitools.app/tool/voil-chatgpt-browser-assistant.md) |
| 10 | [Tabbit Browser](https://openaitools.app/tool/tabbit-browser) | 50,371 | +76.7% | Free | AI-native browser that understands your context and runs agent tasks | [.md](https://openaitools.app/tool/tabbit-browser.md) |

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

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