AI Chat Sync is a strong option, but it is not the right fit for everyone. Below are 10 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
A browser plugin that quickly opens AI websites and chats with multiple AIs concurrently. The responses from large language models developed by different companies can vary significantly when answering the same question. Often, we need to compare replies from different large language models to find the optimal answer. This browser plugin aims to simplify this process by helping you quickly open AI chat websites from multiple companies with a single click. When you chat on any of these websites, it synchronously sends the question to other AI chat websites. Features - One-click to quickly open multiple AI chat websites and quickly close all opened AI chat websites, opening methods support current window tab, new window tab, new window horizontal tiling, new window vertical tiling, new window grid tiling. - Synchronous chat function, sending a question to any AI chat website will be synchronized to other AI chat websites, supporting batch initiation of new chats, quickly closing all AI chat synchronizations, and quickly closing specified AI chat synchronizations. - Support adding new web pages as AI chat websites for quick opening and synchronous chatting. Support custom rules and use the rules of existing AI chat websites in the system.
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| AI Chat Sync (original) | 5.0 | 191 | Free | Quickly open AI websites and chat with multiple AIs concurrently |
| Sider: Chat with all AI: GPT-5, Claude, DeepSeek, Gemini, Grok | 4.9 | 5M+ | Free | ChatGPT, DeepSeek, Gemini, Claude, Grok all in one AI sidebar, for AI search, read, and write. |
| Adobe Acrobat: PDF edit, convert, sign tools | 4.4 | 311M+ | Freemium | Do more in Google Chrome with Adobe Acrobat PDF tools. View, fill, comment, sign, and try convert and compress tools. |
| Adblock Plus - free ad blocker | 4.4 | 37M+ | Freemium | Users who want an easy-to-use ad blocker with optional acceptable ads support. |
| Chrome Remote Desktop | 3.1 | 37M+ | Free | Chrome Remote Desktop extension |
| VPN for Chrome: NordVPN proxy protection | — | — | Free | Connect to the fastest VPN out there — NordVPN. Hide your IP, block ads, and be safer online with our VPN proxy extension for Chrome |
| Free VPN for Chrome - VPN Proxy VeePN | 4.5 | 14M+ | Free | VeePN is a VPN extension that unblocks websites and secures your connection with encrypted tunneling and unlimited bandwidth. |
| Tampermonkey | 4.7 | 11M+ | Free | Power users who want to customize websites and automate tasks with userscripts. |
| Adblock for Youtube™ | 4.4 | 10M+ | Free | ✓ Permissions: like common ad-blocking extensions we do need default permissions on every website to remove ads or popups for exam. |
| Foxit PDF Creator | — | — | Free | To convert the web page to Foxit PDF |
| LastPass: Free Password Manager | 4.2 | 8M+ | Free | Users who want a free, feature-rich password manager with cross-device sync. |
ChatGPT, DeepSeek, Gemini, Claude, Grok all in one AI sidebar, for AI search, read, and write.
Why it replaces AI Chat Sync: Covers similar ground in the Productivity category: ChatGPT, DeepSeek, Gemini, Claude, Grok all in one AI sidebar, for AI search, read, and write.
Do more in Google Chrome with Adobe Acrobat PDF tools. View, fill, comment, sign, and try convert and compress tools.
Why it replaces AI Chat Sync: Another popular Productivity extension: Do more in Google Chrome with Adobe Acrobat PDF tools. View, fill, comment, sign, and try convert and compress tools.
Remove ads on YouTube and everywhere else you browse.
Why it replaces AI Chat Sync: Another popular Productivity extension: Remove ads on YouTube and everywhere else you browse.
Chrome Remote Desktop extension
Why it replaces AI Chat Sync: Another popular Productivity extension: Chrome Remote Desktop extension
Connect to the fastest VPN out there — NordVPN. Hide your IP, block ads, and be safer online with our VPN proxy extension for Chrome
Why it replaces AI Chat Sync: Another popular Productivity extension: Connect to the fastest VPN out there — NordVPN. Hide your IP, block ads, and be safer online with our VPN proxy extension for Chrome
VeePN is a VPN extension that unblocks websites and secures your connection with encrypted tunneling and unlimited bandwidth.
Why it replaces AI Chat Sync: Another popular Productivity extension: VeePN is a VPN extension that unblocks websites and secures your connection with encrypted tunneling and unlimited bandwidth.
Tampermonkey lets you install and run userscripts to customize websites, automate repetitive tasks and enhance functionality.
Why it replaces AI Chat Sync: Another popular Productivity extension: Tampermonkey lets you install and run userscripts to customize websites, automate repetitive tasks and enhance functionality.
✓ Permissions: like common ad-blocking extensions we do need default permissions on every website to remove ads or popups for exam.
Why it replaces AI Chat Sync: Another popular Productivity extension: ✓ Permissions: like common ad-blocking extensions we do need default permissions on every website to remove ads or popups for exam.
To convert the web page to Foxit PDF
Why it replaces AI Chat Sync: Another popular Productivity extension: To convert the web page to Foxit PDF
LastPass is an award-winning password manager for secure credential management on any device.
Why it replaces AI Chat Sync: Another popular Productivity extension: LastPass is an award-winning password manager for secure credential management on any device.
Direct comparisons with the extensions people weigh against it.
Sider: Chat with all AI: GPT-5, Claude, DeepSeek, Gemini, Grok is the closest match. Covers similar ground in the Productivity category: ChatGPT, DeepSeek, Gemini, Claude, Grok all in one AI sidebar, for AI search, read, and write.
Yes — Sider: Chat with all AI: GPT-5, Claude, DeepSeek, Gemini, Grok, Chrome Remote Desktop, VPN for Chrome: NordVPN proxy protection are free.
