# Defained vs Sider

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

| Metric | [Defained](https://openaitools.app/tool/defained) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/defained/cldemohjjfmlhnlpoonknmbobipfedgg | https://sider.ai |
| Categories | Prompt Engineering, Large Language Models (LLMs), AI Productivity Tools, AI Assistant | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Freemium | 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 |

## Defained

Defained targets the everyday friction of working with large language models: prompts that live scattered across documents, notes and chat history. Instead of hunting for text and pasting it in, you keep a structured prompt library and pull any entry into the active chat window with one click. The extension sits alongside ChatGPT, Gemini, Claude and Perplexity, so it fits into your existing workflow rather than replacing it.

The organizational layer is deliberately simple. You can link a Google Sheet as your prompt source, which means edits happen in a spreadsheet you already control, and you can search, filter by category and mark favourites once the library grows. A template gallery of 50+ prompts gives new users something useful before they build their own collection.

Defained is a free-to-install Chrome extension published by LM Media. It is a focused productivity utility rather than a full prompt-engineering suite, so it suits people who mainly want fast reuse of prompts across several chat tools.

**Pricing & Plans:** Defained is free to install from the Chrome Web Store, with a built-in gallery of 50+ free prompts. The listing is categorized as freemium. No paid tiers are advertised on the store page.

- **One-click prompt insertion:** Pick any stored prompt and send it straight into the active ChatGPT, Gemini, Claude or Perplexity input field without copying and pasting.
- **Google Sheet prompt library:** Connect a Google Sheet so your prompt library stays editable in a familiar spreadsheet and syncs with the extension.
- **Search, filters and favourites:** Search your prompt collection, filter entries by category and star the ones you rely on most.
- **50+ free prompt templates:** Start quickly with a built-in gallery of more than 50 ready-made prompts that require no setup.
- **In-context overlay:** Runs as a lightweight browser extension panel, so the prompt manager sits next to the AI chat you are already using.

**Strengths:** Removes repetitive copy-pasting across four major AI chat tools; Prompt library can be managed in a familiar Google Sheet; Includes 50+ free templates for immediate use; Lightweight extension that stays inside the tools you already use

**Limitations:** No user ratings yet on the Chrome Web Store listing; Prompt library connection depends on a Google Sheet workflow, which some users may find limiting; Last update was July 2024, so feature velocity appears slow; Only works inside supported chat interfaces rather than any web app

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

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

### How do their growth rates compare?

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

### How does pricing compare?

Defained: Freemium. Defained is free to install from the Chrome Web Store, with a built-in gallery of 50+ free prompts. The listing is categorized as freemium. No paid tiers are advertised on the store page. 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 | [AIPRM](https://openaitools.app/tool/aiprm) | 708,870 | -6.9% | Freemium, Paid | A prompt library and management layer for ChatGPT and other AI models | [.md](https://openaitools.app/tool/aiprm.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 | [PrompTessor](https://openaitools.app/tool/promptessor) | 321,329 | +84.2% | Freemium | Analyze, optimize and organize prompts in one AI workspace | [.md](https://openaitools.app/tool/promptessor.md) |
| 8 | [AI Toolbox](https://openaitools.app/tool/chatgpt-toolbox) | 290,140 | +16.9% | Freemium | Organize, search and export your AI chats across ChatGPT, Gemini, Claude and Grok | [.md](https://openaitools.app/tool/chatgpt-toolbox.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/defained-vs-sider

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