Direct answer
What is Sider?
Sider is an in-browser AI copilot and agent that embeds multi-model AI access (including GPT, Claude, and Gemini) into a unified sidebar for chatting, multi-site automation, and website customization.
Sider operates as an omnipresent sidebar and agent inside web browsers and across desktop and mobile platforms. Built around three primary operational modules—Chat, Claw, and Code—the tool helps users process information, run browser-based automations, and modify web interfaces on the fly. The Chat feature provides access to frontier models like GPT, Claude, and Gemini directly alongside web browsing. It handles contextual reading tasks such as summarizing long articles, translating foreign languages, analyzing YouTube videos, and answering questions about active web pages or uploaded documents. Through specialized companion tools like ChatPDF, PDF Translator, and Wisebase Deep Research, users can also query documents and perform deeper academic or mathematical queries. Beyond conversational assistance, the Claw module functions as an autonomous browser agent. It carries out complex research, compares product prices across multiple websites, extracts structured details, and automates multi-step online tasks while leveraging existing logged-in sessions. Additionally, the Code module allows users to describe website modifications in plain English, restyling, simplifying, and remembering interface alterations across future browser visits.
Unlike standalone chatbot interfaces or simple text rewriters, Sider couples multi-model access (GPT, Claude, Gemini) with an active browser agent (Sider Claw) that navigates multi-site workflows using your active sessions, alongside page-level styling customization (Sider Code).
Product capabilities
Key features
Sider Chat
Access multiple frontier models including GPT, Claude, and Gemini in a sidebar to summarize web pages, explain concepts, and analyze YouTube videos.
Sider Claw
An autonomous browser agent that executes multi-step web tasks, extracts information, and compares products across sites using logged-in user sessions.
Sider Code
Allows users to customize, restyle, and simplify web layouts using natural-language instructions, saving page adjustments for future visits.
ChatPDF & Document Translators
Inspect, translate, and question PDFs and uploaded files directly in the browser workflow.
Wisebase & Deep Research
Dedicated research modules for deep web investigation, academic scholar research, and math problem solving.
Cross-Platform Ecosystem
Synchronized single-account experience spanning Chrome, Edge, macOS, Windows, iOS, and Android applications.
Workflow
How Sider works
- Install the Sider extension on Chrome or Edge, or download the app for desktop or mobile.
- Open the sidebar while browsing any webpage or document to access Sider Chat with GPT, Claude, or Gemini.
- Use Sider Claw to delegate multi-step web research tasks across websites using active browsing sessions.
- Use Sider Code to restyle or customize website elements using natural language instructions.
Practical fit
Who should use Sider?
Cross-Store E-Commerce Comparison
Instruct Sider Claw to research hardware components or items across sites like Amazon, Best Buy, and eBay, returning a consolidated budget summary.
Document and Video Analysis
Read papers, query PDF documents via ChatPDF, and summarize lengthy YouTube videos in the sidebar without opening separate chat applications.
Personalized Web Restyling
Use Sider Code to declutter busy websites or modify web styling through conversational prompts, retaining changes permanently.
Editorial assessment
Pros and limitations
Where it is strong
- Integrates leading AI models (GPT, Claude, Gemini) directly into the browser workflow.
- Browser agent can execute autonomous tasks across multiple websites using existing user sessions.
- Comprehensive cross-device availability spanning Chrome, Edge, desktop, and mobile.
Where to be careful
- Specific credit limits and tier breakdowns are not detailed on the homepage.
- Autonomous browser actions require granting broad access to browsing sessions and web page contents.
Commercial context
Sider pricing
At the review date, the vendor offers free access alongside paid upgrades and an education plan, but specific plan tiers, credit limits, and subscription prices are not disclosed on the homepage. Verify current rates on the official pricing page.
Pricing, limits, taxes, model access, and regional availability can change. Verify the purchase-critical details on the official pricing page linked under Sources.
Transparent ranking
Why Sider scores 71.3
Each factor is scored on a 100-point scale, then combined using the public ToolsRank weights. Engagement and momentum stay at a neutral baseline until measured signals exist, so no tool can gain or lose position from numbers nobody recorded.
Compatibility
Languages, platforms, and integrations
Languages
- English
- Spanish
- Portuguese
Platforms
- Chrome
- Edge
- macOS
- Windows
- iOS
- Android
Integrations & surfaces
- Google Chrome
- Microsoft Edge
- YouTube
- Amazon
- Best Buy
- eBay
Community
Reviews and questions
No approved member reviews yet. Editorial factors above are the only rating on this page.
Reviews and questions come from Google-signed members and are checked by an editor before they appear.
Frequently asked
Sider FAQ
What models can I use with Sider?+
According to the official site, Sider provides access to leading LLMs including GPT, Claude, and Gemini within its unified chat interface.
What is Sider Claw?+
Sider Claw is an autonomous browser agent feature designed to handle multi-step web tasks. It navigates live websites, utilizes existing logged-in sessions, extracts data, and compares items across different platforms automatically.
What platforms and browsers does Sider support?+
Sider is available as an extension for Google Chrome and Microsoft Edge, as well as native applications for macOS, Windows, iOS, and Android.
Does Sider offer a free version?+
Yes, Sider provides free installation and access ('Get Sider for Free' / 'Add to Chrome'), alongside specialized paid tiers and an Education Plan.
