# PeerReview vs Sider

PeerReview records 0 monthly visits with — month-over-month growth and Free (open source) pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

| Metric | [PeerReview](https://openaitools.app/tool/peerreview) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/peerreview/nnldmbcnidpahakofnooepjdokglpdcj | https://sider.ai |
| Categories | AI API, AI Summarizer, AI Developer Tools, Large Language Models (LLMs) | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Free (open source) | 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 | 4.4 | 4.5 |
| Saved Count | 0 | 31 |
| Supported Platforms | Browser Extension | Website |

## PeerReview

PeerReview is a minimal Chrome extension whose entire purpose is captured by its tagline: summarize any text with just a click. Highlight a paragraph, invoke the extension, and it returns a condensed version of the passage without redirecting you to a separate summarization app or web service.

The extension is built on Gemini's Prompt API and Summarizer API, the browser-native interfaces Chrome exposes for on-device language model work. That choice makes PeerReview a lightweight layer over capabilities Chrome already provides rather than a standalone AI service with its own servers and accounts. It is published as an open-source project, and its store listing explicitly invites contributors.

PeerReview is at an early stage: version 0.0.1, published in December 2024, with a small install base. The developer has disclosed that it does not collect or use user data, and the package is only a few kilobytes. Treat it as a steerable open-source utility for students, translators, developers and heavy readers who already run a compatible Chrome build and want faster reading rather than a full productivity suite.

**Pricing & Plans:** Free. The Chrome Web Store listing shows no paid tiers; PeerReview is distributed free of charge as an open-source project.

- **One-click summarization:** Select a passage and click once to replace hunting through menus with an immediate summary.
- **Gemini Prompt & Summarizer APIs:** Uses Gemini's Prompt API and Summarizer API, Chrome's built-in on-device AI interfaces, rather than a custom backend.
- **Works on any highlighted text:** Skims pages, drafts and pasted text and returns the gist without taking you out of the tab.
- **Open source:** A public open-source project that welcomes outside contributions and code review.
- **Privacy-friendly by default:** Small package (about 6.7 KB) with virtually no interface overhead, and the developer states no data collection.

**Strengths:** One-click workflow keeps you inside the page you are reading; Built on Gemini's browser-native APIs, so no external accounts or API keys to manage; Open source, so the behaviour is auditable and improvable by contributors; Developer declares that no user data is collected or used

**Limitations:** Very early proof-of-concept (v0.0.1) with no visible release history or roadmap; Depends on on-device Gemini APIs, so behaviour varies by Chrome version and hardware; No accounts, sync or team features, and effectively no vendor support

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

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

### How do their growth rates compare?

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

### How does pricing compare?

PeerReview: Free (open source). Free. The Chrome Web Store listing shows no paid tiers; PeerReview is distributed free of charge as an open-source project. 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 | [Tactiq](https://openaitools.app/tool/tactiq) | 6,521,542 | +4.1% | Freemium | Live meeting transcription and AI notes without a bot in the call | [.md](https://openaitools.app/tool/tactiq.md) |
| 4 | [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) |
| 5 | [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) |
| 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 | [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/peerreview-vs-sider

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