What is Sider?
Sider is a browser extension and app that adds an AI sidebar for chatting with models such as ChatGPT, Claude, Gemini, Grok and DeepSeek. It can summarize web pages and PDFs, help with writing and translation, take notes and generate research reports.
Key facts
- Category
- General Assistant
- Website
- https://sider.ai/
- Last updated
- Oct 31, 2026
Sider FAQ
What is Sider?
Sider is a browser extension and app that adds an AI sidebar for chatting with models such as ChatGPT, Claude, Gemini, Grok and DeepSeek. It can summarize web pages and PDFs, help with writing and translation, take notes and generate research reports.
What category is Sider in?
Sider is listed in the General Assistant category.
What is the Sider website?
The Sider website is https://sider.ai/.
What are alternatives to Sider?
General Assistant alternatives to Sider include Monica, Claude, Perplexity Computer, Opal 2.0, Mistral AI and Poe.
Alternatives to Sider
MonicaAI assistant for chat, writing, and coding.FreemiumClaudeA safety-focused AI assistant with exceptional writing and coding nuance.Free / $20 moPerplexity ComputerA digital worker that delegates tasks across 19 models.$200 moOpal 2.0Google's smart agent with memory and routing.Free / UsageMistral AIPowerful open-source AI models from Europe.Usage-basedPoeA platform to access multiple AI models in one place.Free / $20 mo
See all General Assistant AI tools →Guides that cover General Assistant
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