Handily use / switch any one or multiple (uninterruptedly) search engines (or search any websites) via a flexible tool. ✅ Includes daily, entertainment & work. 🌟 Besides what any multi-engine web search tool can do (GET/POST, user custom engines, built-in Google,DuckDuckGo,Youtube,eBay,Github etc), it can also✨:

🖋️ Single-line or multi-line text
🖥️ Desktop (browser extension / web app) and mobile (web app)
🔎 Even works with websites that don't provide GET/POST interface (so-called In-page-Ajax-render websites)
🔎 Do many operations at once by one button
💪 Users can customize their search engines programatically: JSON as search engines database (both built-in & user-defined. GUI editing also available). Flexibility & extensibility in engine data & search method

and so on... Go on for readme Basic

🔎 Use any search engines or inquery websites (multiple simultaneously) from one page. Any websites that support GET/POST request.
E.g: Google, DuckDuckGo, Youtube, eBay, Github etc. Or the stock of a supermarket near your home (if it supports). Customizable. 50+ built-in.
🔎 User adding custom-defined search engine (syncronizable in extension)
🔎 Support using browser-installed search engines (browser extension, so can directly use those you've added into browser, Firefox only)

More

🖋️ Single-line or multi-line text edit/input and sending
Useful when for e.g. you want to have article paragraphs translated
🗂️ Search engines categorization
📋 Save, reuse and manage your input history (only saved locally in the browser localStorage)
🖱️ Quickly use user selected text on webpage as search term (browser extension, context menu) - Not in Firefox incognito mode - On Chrome, after clicking context menu item, click the icon on toolbar (or use keyboard shortcut)
⌨️ Keyboard shortcut (browser extension)
- Open popup. Firefox: Ctrl+Alt+S Chrome & others：Ctrl+Shift+S
- Set selected text as search term (then use open popup). Firefox: Ctrl+Alt+D Chrome & others：Ctrl+Shift+D
🖥️ Support both desktop (browser extension & web app) and mobile (web app only) devices

Even more: What's special about it

🔎 Even works with those In-page-Ajax-render websites that don't provide GET/POST interface to public
🔎 Do many operations at once by one button
Good-looking, powerful and lightweight
Uses JSON as unified search engines database (both built-in and user-defined). Has strong flexibility in engine data:
- Multiple buttons for one engine: more than one operations for one engine. (Buttons inherit data from engine. Some key-value data in button can override the ones in engine name)
- Cross-engine use: Call another engine (or it's certain button action) to do the action
- String-formatting user's input, according to engine's need
- Combining above two to search websites that don't support search

Safety & Privacy

🛡️ Minimum default permissions. Won't ask for sensitive permissions until needed. (browser extension)
🛡️ Pure client-side tool functions fully. No necessary server. No collecting user's input or ad analyzing.
🛡️ Hide HTTP Referrer by default to protect user privacy.
🛡️ Browser extension does not inject anything to web sites. (except when using In-page-Ajax-render engine)

List of engines See list of build-in search engines Similar tools & methods comparison Comparison of open source web searching (multi-engines) tools (Experienced users may prefer intuitive horizontal comparison, to quickly know what's special about it) How to edit search engines Ordinary users who only use basic features can directly use our online gui engine-editing tool (link1) (link2). Read more at the source code page