# bookmarksai vs Sider

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

| Metric | [bookmarksai](https://openaitools.app/tool/bookmarksai) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/bookmarksai/gapcljmiheclbeoagghkdflildhbahha | https://sider.ai |
| Categories | AI Browsers, AI Summarizer, AI API, AI Research Tool | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 0 | 2,644,740 |
| MoM Growth Rate | — | -10.6% |
| Primary Market | Global | United States |
| Direct Visits | 0 | 1,699,535 |
| Review Score | 3.7 | 4.5 |
| Saved Count | 0 | 31 |
| Supported Platforms | Browser Extension | Website |

## bookmarksai

bookmarksai starts from a familiar annoyance: bookmarks capture a link but not the content, so when the page changes or you simply forget why you saved it, the bookmark is worthless. The extension takes an HTML snapshot of each page you bookmark, preserving the text at the moment you saved it. That local archive becomes the corpus the AI reasons over.

From there you interact with your collection through prompts. You can ask a single saved page for a summary or a specific answer, or combine several bookmarks and ask the model to compare them, extract common claims, or generate follow-on ideas. A criteria mode lets you set a standard and have the AI report which saved pages meet it, which suits literature screening and coursework.

The important operational detail is the API key. bookmarksai is a thin client around Google's Gemini Pro API, and you bring your own key from Google's maker suite. That keeps the extension free but means your usage is billed by Google and the product depends on Google's model availability. The listing describes the extension as not collecting or using your data directly, since requests travel through your own key. The developer publishes other tools at mlnomads.com.

**Pricing & Plans:** Free extension; you must supply your own Google Gemini Pro API key, and Google bills any API usage on your account.

- **Bookmark snapshots:** When you bookmark a page, the extension saves an HTML snapshot so the content remains readable and searchable even after the live page changes.
- **Prompt-driven analysis:** Custom prompts let you steer the model toward a summary, a deep analysis, a comparison, or any specific question you have about the saved pages.
- **Single or multi-page processing:** Read pages individually for focused answers or feed several bookmarks in at once to compare arguments and synthesize information across sources.
- **Criteria checks:** Define your own requirements and let the AI judge whether a saved page actually meets them, useful for screening research candidates.
- **Gemini Pro powered:** Connect a Google Gemini Pro API key from the maker suite and pay only for the tokens you actually use.

**Strengths:** Snapshots preserve page content that bookmarks alone would lose; Custom prompts beat one-size-fits-all summarization; Can compare or synthesize multiple bookmarked pages at once; No subscription for the extension itself

**Limitations:** You must supply and pay for your own Gemini Pro API key; Requires HTML snapshots to be taken before content search works well; Low install base and no user ratings, so long-term maintenance is unproven; English-only interface

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

## 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)

## Frequently Asked Questions

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

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

### How do their growth rates compare?

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

### How does pricing compare?

bookmarksai: Contact for Pricing. Free extension; you must supply your own Google Gemini Pro API key, and Google bills any API usage on your account. 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.

## 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 | [Glasp](https://openaitools.app/tool/glasp) | 889,564 | -14.1% | Freemium | Highlight the web, learn in public, and build your AI clone | [.md](https://openaitools.app/tool/glasp.md) |
| 6 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider. | [.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 | [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) |
| 9 | [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) |
| 10 | [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) |

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

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)