Sider

Sider is a browser sidebar AI assistant that stays available on any web page. It helps you chat with AI, write and edit text, summarize what you’re reading, translate content, and run deeper research without jumping between tabs or separate tools.

Deep research and analysis

Sider includes a Deep Research agent that can automatically find and sort relevant sources, highlight key points, and generate visual reports. It’s designed to help you get structured takeaways on complex topics using models like GPT-5, Claude 4, Gemini 2.5, and Grok 4.

Writing and content tools

Use Sider while you read to create and refine content in context:

• Draft articles, emails, posts, notes, and study summaries
• Rewrite, shorten, expand, or translate selected text
• Generate AI presentations, web pages, and images

Extensions and cross-platform access

Sider is available as a browser extension (for example, Chrome) and as standalone apps, so you can use the same AI workflow across devices. It offers a free trial option and has millions of active users with tens of thousands of 5-star ratings.