# NapCat vs Sider

NapCat records 4,224 monthly visits with -16.8% month-over-month growth and Free pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

| Metric | [NapCat](https://openaitools.app/tool/napcat) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://napcat.app | https://sider.ai |
| Categories | AI Monitor, AI Agent, AI Developer Tools, AI Productivity Tools | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Free | Freemium |
| Monthly Visits | 4,224 | 2,644,740 |
| MoM Growth Rate | -16.8% | -10.6% |
| Primary Market | United States | United States |
| Direct Visits | 1,396 | 1,699,535 |
| Review Score | 4.6 | 4.5 |
| Saved Count | 0 | 31 |
| Supported Platforms | Website | Website |

## NapCat

NapCat occupies the space Apple leaves around the MacBook camera and turns it into a control surface for AI-assisted development. Each running agent session becomes a row showing whether it is working, waiting on you, or done, and clicking that row returns you to the exact session and thread. Claude Code and Codex receive the deepest integration, including local context, lifecycle events, and exact task return; other recognized agent CLIs are picked up at process level.

The permission side is what many developers actually value. Claude Code permission requests and structured MCP elicitation forms appear in the notch, so a small decision can be resolved without switching windows. Typed or secret input opens a native form once you click through. Outside of agent monitoring, the same island hosts media controls, shortuts, a 25- or 50-minute focus timer, and a nap screen that blacks out your displays while builds keep running.

NapCat is deliberately local-first. Monitoring and the Activity view run on your machine, no server is required, and prompts, responses, project names, and paths are not transmitted. The optional Claude usage meter reads directly from Anthropic through your existing Claude Code login, and product analytics is off unless you enable it. The app is free with no account, license key, or trial clock, distributed as a signed DMG that updates automatically.

**Pricing & Plans:** NapCat is completely free. There is no account, license key, trial clock, or paid tier, and the download includes every feature.

- **Live agent status in the notch:** See at a glance which of your AI coding sessions are working, which need you, and which finished, with stable identities across CLI and desktop threads.
- **Exact session return:** Click a row in the notch to jump back to the precise Claude Code or Codex session and thread, instead of hunting through terminals and windows.
- **Claude Code permissions and input forms:** Review permission requests and structured MCP elicitation forms from the notch; simple choices resolve inline while typed or secret fields open a native form.
- **Screen naps and keep-awake:** Cover your displays with a private nap screen while builds and downloads continue in the background, with keep-awake holding off sleep and the lock timer.
- **Local activity history:** A private contribution-style map on your Mac records daily agent time, session, prompt, and completed-work totals, with configurable history retention.

**Strengths:** Completely free with no account, license key, or upsell; Local-first: prompts, responses, and project paths stay on the machine; Exact session return saves real time when many agents run at once; Handles Claude Code permission prompts and MCP input forms in the notch

**Limitations:** Requires macOS 13 or later on Apple Silicon; Notch-oriented UI is less compelling on Macs without a physical notch; Rich context is deepest for Claude Code and Codex; other CLIs only show process-level status

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

NapCat has 4,224 monthly visits, while Sider has 2,644,740. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

NapCat has a month-over-month growth rate of -16.8%; Sider has -10.6%.

### How does pricing compare?

NapCat: Free. NapCat is completely free. There is no account, license key, trial clock, or paid tier, and the download includes every feature. 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 | [Cursor](https://openaitools.app/tool/cursor) | 23,297,751 | +8.4% | Freemium | The AI coding agent for building ambitious software | [.md](https://openaitools.app/tool/cursor.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 | [Command Code](https://openaitools.app/tool/command-code) | 2,358,177 | -12.1% | Freemium, Contact for Pricing | The coding agent that learns your coding taste | [.md](https://openaitools.app/tool/command-code.md) |
| 6 | [Clawdbot (OpenClaw)](https://openaitools.app/tool/clawdbot) | 1,903,068 | -25.4% | Paid, Free | Open-source personal AI assistant that runs on your own machine and works from chat apps | [.md](https://openaitools.app/tool/clawdbot.md) |
| 7 | [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) |
| 8 | [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) |
| 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/napcat-vs-sider

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