Sider

Sider is a browser sidebar AI assistant that lets users chat with web pages, summarize content, and automate tasks.

Sider is an AI browser sidebar and agent designed to help users research faster, summarize web pages, take notes, generate reports, and chat with leading AI models like ChatGPT, Gemini, Claude, Grok, and Deepseek. It supports inputs such as web pages, PDFs, and YouTube videos. Users can chat to understand content, use Sider Hand to automate multi-step browser tasks across websites, and use Sider Code to customize website appearances in plain words. It is built for individuals wanting to simplify browser-based research, reading, and task automation. The platform integrates with multiple devices and operating systems.

Sider at a glance

Best for: Software engineer, Researcher, Writer, Student
Runs on: Web, macOS, Windows, iOS, Android, Chrome extension
Pricing: Freemium
Released: March 2023
Category: AI agent tool
Website: sider.ai

Key features

Summarize web pages, PDFs, and YouTube videos
Chat with ChatGPT, Claude, Gemini, Grok, and Deepseek
Automate tasks across websites using logged-in sessions
Customize and edit any website using plain words
Translate webpages, PDFs, and images
Generate images, videos, and slides
Research across multiple websites

Use it for

Summarizing long articles and research papers
Comparing prices and shopping online
Translating web pages and documents
Automating multi-step browser workflows

Alternatives to Sider

BrowserOS — Runs entirely locally and lets AI agents use real user logins to complete tasks.
Page Agent — Integrates directly into web pages without browser extensions or headless browsers.
Fara — It operates visually to perform multi-step web tasks without accessibility trees.
Webwright — Enables code-based web automation with reusable and rerunnable scripts.
Page Assist — Interact directly with local AI models on any webpage via a sidebar and web UI.
DeepTutor — It organizes learning into workspaces with custom AI agents and knowledge bases.
BrowserAct Skills — Builds tested web scrapers from single text prompts with managed infrastructure.
AgenticSeek — It runs entirely on a local machine without cloud dependency or API costs.
Merlin — Access multiple top AI models through one account without switching tabs.
Ego Lite — Executes browser automation in isolated workspaces using existing logins.
Thinkbeside — Connect GPT, Claude, Gemini, DeepSeek and Grok to any webpage using your own API keys.
Browser Use Web UI — It supports custom browser integration and persistent sessions.

All Sider alternatives