Comparison
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 RegexAI | not listed | yes | Browser extensions |
 Pinokio | not listed | ? | Browser extensions |
 MaxAI | 12 USD/mo | yes | Browser extensions |
 HARPA AI | 55.4 PLN/mo | ? | Browser extensions |
 Gemini in Chrome | 97,99 PLN/mo | ? | Browser extensions |
 Sider | not listed | yes | Browser extensions |
 Superpower ChatGPT | not listed | yes | Browser extensions |
 LocalePack | not listed | no | Browser extensions |
 Opera AI | not listed | yes | Browser extensions |
Each alternative in short
1. Pinokio
One-click launcher and browser for running open-source AI and other apps locally on your own computer.
The vendor does not state this clearly on the homepage or pricing page.
2. MaxAI
Browser extension that gives an AI assistant sidebar for reading, writing, summarizing and translating content on any webpage.
Yes, there is a free plan. Unlimited Free chat with the fast free AI model, 3 Pro chats per day, limited file uploads, basic browser features.
3. HARPA AI
Chrome extension giving access to many AI models on any web page, for summarizing, writing, research and web automation.
The vendor does not state this clearly on the homepage or pricing page.
4. Gemini in Chrome
AI browsing assistant built into Google Chrome that answers questions about open tabs, summarizes pages and videos, and can act on web tasks.
The vendor does not state this clearly on the homepage or pricing page.
5. Sider
AI sidebar and browser agent that chats with multiple AI models, summarizes web pages, and automates browser tasks.
Yes, there is a free plan. The pricing page lists a free tier for translation (basic model) and the Chrome extension itself; the exact free credit allowance is not stated in the text.
6. Superpower ChatGPT
Browser extension adding folders, search, prompt management, and exports to ChatGPT for organizing and reusing chats.
Yes, there is a free plan. Free to add to Chrome; the page does not specify which features are limited on the free tier.
7. LocalePack
Translates Chrome extension messages.json files into 52 locales with placeholder-safe AI and returns a ready-to-ship _locales ZIP.
No - according to the vendor, it is paid only.
8. Opera AI
Free, accountless AI assistant built into the Opera browser that answers questions, summarizes tabs and files, and generates images.
Yes, there is a free plan. Free access to Opera AI with no log-in, including the AI image generator and access to OpenAI and Google models.
FAQ
What is the best alternative to RegexAI?
The most popular option in the same category is Pinokio. See the comparison table above.