# Horus vs Sider

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

| Metric | [Horus](https://openaitools.app/tool/horus) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/horus/ejicpjbmmpchedijpnepmcdlhdbnpiem | https://sider.ai |
| Categories | AI Summarizer, AI Translate, AI Rewriter, AI PDF Summarizer | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Free | 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 | 3.6 | 4.5 |
| Saved Count | 0 | 31 |
| Supported Platforms | Browser Extension | Website |

## Horus

Horus is a free Chrome extension designed to act as a reading and research companion while you browse. Its core function is summarization: instead of reading an entire article, you get a condensed set of key points, which is useful for fast readers or anyone who wants the gist before committing time. Because it runs as a browser extension, it integrates directly into your existing browsing flow.

Beyond summaries, Horus answers questions about whatever page you are on. You can highlight a topic and ask for clarification, and the assistant pulls from the page and related web content to respond. This makes it handy for research, study, or casual curiosity without opening a search engine in a new tab. It also covers two common friction points in reading: translation and rewriting, letting you convert page text into another language or rephrase dense paragraphs into simpler wording.

A notable extra is PDF chat. Large documents such as reports and textbooks can be opened and queried directly, so you can extract the information you need without scrolling endlessly. Horus is publisher-distributed through the Chrome Web Store and shows a modest user base, and it is free to install, which makes it easy to evaluate if its approach fits your workflow.

**Pricing & Plans:** Horus is a free browser extension offered at no cost. You install it from the Chrome Web Store and use its summarization, Q&A, translation, rewriting, and PDF chat features without a paid plan.

- **Instant page summaries:** Instantly condense a long web page into a precise summary so you can grasp the main points without reading everything.
- **In-page question answering:** Ask a specific question and get an answer drawn from the current page and related web information without leaving the tab.
- **Text translation:** Translate page text into your preferred language for multilingual browsing and language study.
- **Paragraph rewriting:** Rewrite or paraphrase selected paragraphs into simpler, clearer wording to make complex sentences easier to follow.
- **PDF chat:** Open a PDF inside the extension and chat with it, so large documents, textbooks, and reports become easier to digest.

**Strengths:** Free to install and use, with no subscription barrier; Works inside the browser so you never leave the page you are reading; Combines summaries, Q&A, translation, rewriting, and PDF chat in one tool; PDF chat makes long documents and textbooks easier to digest

**Limitations:** Small user base and low install count may limit community support; Last updated in 2024, so it may not include the newest model capabilities; Listed with no ratings yet, so quality is hard to gauge before installing; Relies on the developer's backend service, so availability depends on the publisher

[Profile (Markdown)](https://openaitools.app/tool/horus.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 Horus and Sider compare in monthly traffic?

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

### How do their growth rates compare?

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

### How does pricing compare?

Horus: Free. Horus is a free browser extension offered at no cost. You install it from the Chrome Web Store and use its summarization, Q&A, translation, rewriting, and PDF chat features without a paid plan. 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 | [ChatPDF](https://openaitools.app/tool/chatpdf) | 1,044,477 | -3.7% | Freemium | Chat with any PDF, video, or website and get cited answers in seconds | [.md](https://openaitools.app/tool/chatpdf.md) |
| 6 | [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) |
| 7 | [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) |
| 8 | [Linnk.AI](https://openaitools.app/tool/linnk-ai) | 451,514 | +12.4% | Freemium | Translate, summarize, and understand documents in 154 languages without losing the layout | [.md](https://openaitools.app/tool/linnk-ai.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 | 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) |

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

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