Top 10 Best Sidebar Extensions for Chrome in 2025

Sider stands out as a comprehensive AI powerhouse integrated directly into your Chrome sidebar. Designed to make cutting-edge AI accessible to everyone, Sider brings models like ChatGPT (including GPT-4o), Claude 3.5 Sonnet, Gemini 1.5, and more into your daily workflow. It aims to be the easiest on-ramp to the AI highway, blending advanced capabilities into the tools you already use.

Think of Sider as the ultimate AI companion for your browser. It allows you to pull up various AI models side-by-side within any tab, facilitating easy multitasking and comparison. Whether you're reading articles, searching the web, composing emails, or translating text, Sider offers contextual AI assistance. It provides access to real-time information, overcoming the data limitations of some AI models. Furthermore, Sider includes robust features like prompt management, allowing you to save and deploy prompts effortlessly across the web. It's an all-in-one solution designed for both simplicity and power.

Manganum aims to be the ultimate productivity hub within your Chrome browser, consolidating essential tools like Gmail, Google Calendar, Google Drive, Google Keep, Tasks, and even AI assistants like ChatGPT into a single, accessible sidebar. The core idea is to minimize tab switching and keep your crucial applications just one click away, regardless of the webpage you're currently browsing.

This extension transforms your sidebar into a command center. You can quickly check your Gmail inbox, view your Google Calendar schedule (and join meetings directly), access Drive files, manage notes in Keep or Manganum Notes, and handle tasks via Google Tasks or Todoist. The integration of AI tools like ChatGPT and Google Bard adds another layer of utility for quick assistance. Manganum also offers features like a text translator, SMS syncing from Android, and even small games for breaks. Its customizable new tab page further enhances the personalized productivity experience.

Meomni positions itself as the ultimate sidebar assistant, skillfully blending AI capabilities with essential organizational tools. It integrates ChatGPT (including GPT-4o) and Gemini directly into a readily accessible sidebar, allowing for instant AI assistance without disrupting your browsing flow. Beyond AI, Meomni functions as a sophisticated bookmarks manager and task organizer.

The extension aims to streamline your digital life by consolidating key functions. You can manage bookmarks within the sidebar using folders and tags, view and manage your Google Calendar, and unify tasks from Google Tasks and Todoist. Meomni also offers a customizable dashboard for your new tab page, featuring widgets for bookmarks, weather, and more. The emphasis is on providing a versatile, user-friendly interface that caters to both casual users and power users seeking enhanced productivity.

AI Blaze brings the power of AI directly into your browsing workflow, acting as a versatile copilot accessible via a sidebar on any webpage. It integrates models like Claude Sonnet and GPT-4o (powering ChatGPT) to assist with a wide range of tasks, from writing and summarizing to research and translation. The core idea is to provide instant AI assistance without context switching.

The extension features a library of powerful built-in prompts for common tasks like correcting grammar, summarizing pages, learning about topics, translating text, and drafting replies. Users can easily customize these prompts or create their own, tailoring the AI's assistance to specific needs. AI Blaze uniquely allows for interactive form fields within prompts (like dropdown menus) and can incorporate data directly from the webpage (e.g., LinkedIn profile details) for highly contextual AI responses. It also supports team sharing of prompt libraries and keyboard shortcuts for triggering prompts quickly, aiming for maximum efficiency.

ChatbotsPlace provides a streamlined way to access popular AI chatbots like DeepSeek, ChatGPT, Claude, and Gemini directly from your Chrome sidebar. This extension aims to integrate powerful AI tools seamlessly into your browsing experience, allowing you to leverage artificial intelligence without needing to navigate away from your current task.

Designed for quick access and ease of use, ChatbotsPlace allows you to interact with various AI models for tasks ranging from answering questions to generating content. A key feature is the ability to select text on any webpage and instantly use it as context for your AI query. The extension also includes a text-to-image generation feature, adding a creative dimension to its capabilities. It emphasizes user-friendliness with an intuitive interface and quick activation via a keyboard shortcut (Ctrl+M or Cmd+M).

VertiTab is a dedicated vertical tab manager designed specifically for the Chrome sidebar, aiming to bring enhanced organization and efficiency to users who juggle numerous tabs. It offers a vertical layout, making better use of widescreen displays and providing a more intuitive overview compared to the traditional horizontal tab strip. VertiTab focuses on smart grouping, workspace management, and performance optimization.

The extension boasts over 20 features, including tree-style tab hierarchies, automatic tab grouping by website or using AI, custom grouping rules, and drag-and-drop organization. It allows users to save entire work environments ('Workspaces') including tab states and window layouts, with options for automatic backups and crash recovery. To combat browser slowdown, VertiTab includes features to automatically suspend inactive tabs and optimize memory usage, along with tools to close duplicate tabs. It also provides robust search functionality and customizable configurations per website.

Glasp is more than just a highlighter; it's a social highlighting and note-taking tool designed to help you collect, organize, and share insights from web pages and PDFs. It operates primarily through a Chrome sidebar, allowing you to highlight text with various colors and make annotations directly on websites, PDFs, YouTube videos, and even images.

All your highlights and notes are automatically saved to your Glasp profile, creating a personal knowledge base. From the sidebar, you can view all annotations for a specific page, tag them for organization, and click to jump directly to the highlighted location. Glasp also integrates AI (ChatGPT, Claude, Gemini, etc.) to summarize highlighted content or entire pages/videos. A unique aspect is its social dimension: you can discover content highlighted by other users ('curators') and follow people with similar interests, turning learning into a collaborative experience. It also supports syncing highlights from Kindle eBooks.

Page Sidebar offers a straightforward yet powerful utility: the ability to open virtually any website within your Chrome browser's side panel. This eliminates the constant need to switch between tabs, allowing you to view and interact with two web pages simultaneously within the same browser window. It's designed to streamline workflows for tasks like referencing information, using web apps, or keeping communication tools handy.

The extension allows you to drag and drop links directly into the sidebar to open them. You can also manage multiple tabs within the sidebar itself, effectively creating a mini-browser within your main browser window. Key features include a customizable home page for the sidebar, context menu integration (right-click a link to open it in the side panel), a navigation bar with search capabilities, drag-and-drop support for links and text (which triggers a search), and options for customizing search engines and toolbar icons. The sidebar is also resizable and supports dark mode.

Note Sidebar provides a simple, minimalist, and convenient way to take notes directly from your Chrome sidebar. It's designed for jotting down thoughts, creating to-do lists, taking meeting notes, or capturing information from webpages or videos without interrupting your flow. Everything you type is automatically saved securely within your browser storage.

The extension offers customization options for the note-taking experience, including changing the background color or paper style (squared, lined), font color, and font size. It supports basic rich text formatting (bold, italic, underline, hyperlink) and plain text. Additional features include text-to-speech functionality with voice selection, a character counter, easy copying of notes to the clipboard, printing directly from the sidebar, note locking with a password, and exporting notes to a TXT file. You can also quickly add selected text from a webpage to your notes via the right-click context menu.

Anything Copilot offers a unique and highly flexible approach to browser sidebars. Instead of providing its own specific tools or AI models, it acts as a 'universal shell' that allows you to open almost any website within the sidebar or a separate popup window. This means you can access your preferred AI chatbots (like ChatGPT, Gemini, Copilot, Kimi), translation services, music players, or any other web-based tool directly alongside your main browsing content.

The key strength of Anything Copilot lies in its unrestricted nature and versatility. It supports multiple tabs within the sidebar, allowing you to switch between different web apps easily. Since it loads official websites, it leverages your existing accounts (like your free ChatGPT access) without needing separate logins or imposing its own usage limits. It emphasizes privacy by not collecting chat content. Unique features include the ability to open sidebar apps in a 'pinned' popup window for use alongside desktop applications and support for reading local PDF/DOCX files by dragging them into the sidebar, enabling interaction with AI even if the AI service itself doesn't support file uploads.