Cluing records 11,227 monthly visits with -43.1% month-over-month growth and Freemium pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.
Knowledge layer that gives your AI the context it lacks
AI sidebar and browser agent for reading, writing and research
| Dimension / Metric | | |
|---|---|---|
| Official Domain | cluing.io | sider.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 11.23K (11,227) | 2.64M (2,644,740) |
| MoM Traffic Delta | -8.52K (-43.1%) | -314.2K (-10.6%) |
| Primary Market & Share | 🇺🇸 United States (50.1%) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 4.45K | 1.7M |
| User Rating | 3.9 | 4.5 |
| Supported Platforms | Website | Website |
Knowledge layer that gives your AI the context it lacks
Save highlights and insights from webpages, PDFs, videos, social posts, newsletters, Kindle, and email using a browser extension or mobile capture.
Let AI suggest structure, group related insights, and use knowledge triggers and chat to keep your base tidy and searchable.
Feed your stored knowledge to any frontier model or custom agent via an AI Canvas and native MCP, so your context travels with you.
Build a common context space that both people and AI agents draw on for research, feedback, and collaboration.
AI sidebar and browser agent for reading, writing and research
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 long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistThe AI workspace where teams and agents get work done together
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
SpecialistTencent's AI knowledge steward for searching, reading, writing, and managing your own knowledge base.
SpecialistTencent's AI knowledge steward for searching, reading, writing, and managing your own knowledge base.
SpecialistA polished space for notes, tasks, and documents that follows you across every device.
SpecialistA polished space for notes, tasks, and documents that follows you across every device.
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.
SpecialistAI agents that turn your own documents into summaries, mind maps and reports
SpecialistAI agents that turn your own documents into summaries, mind maps and reports
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
