Avant Browser
Avant Browser is a web browser for Windows that supports three rendering engines: Trident (Internet Explorer), Gecko (Firefox) and Blink (Chromium). You can switch between engines per tab, which lets you test how websites render or access sites that require a specific engine.
What it does
The main feature is engine switching. You click an icon in the toolbar and choose which rendering engine to use for the current tab. This was originally designed for web developers testing compatibility and for users who needed Internet Explorer mode for banking or corporate sites while browsing normally in Chromium. The browser also includes a built-in ad and popup blocker, a download manager, split-screen view for displaying two pages side by side, and auto-fill for web forms.
Avant Browser runs as a portable application. You can extract it to a USB drive and use it on any Windows computer without installing anything. It stores bookmarks, history and settings in its own folder. Memory usage stays low compared to mainstream browsers because the program itself is lightweight, though actual rendering memory depends on which engine you activate. The interface supports visual skins that change the toolbar and window appearance.
Advantages
- Three rendering engines in one browser with per-tab switching
- Portable version runs from a USB drive without installation
- Built-in ad blocker and popup blocker without extensions
- Lightweight shell with low base memory usage
Drawbacks
- Trident engine is obsolete since Microsoft retired Internet Explorer
- No extension store, so you cannot install Chrome or Firefox add-ons
- Small development team with infrequent updates compared to major browsers
- Gecko and Blink engine versions may lag behind current Firefox and Chrome releases
Who it is for
I used Avant Browser years ago when Internet Explorer compatibility was still required for certain bank and government websites. Today, its main value is the portable mode and built-in tools for people who want a self-contained browser on a USB stick. If you maintain legacy web applications that behave differently across rendering engines, the engine switching saves you from installing three separate browsers. For general browsing in 2024 and beyond, mainstream browsers like Firefox or Chrome with their extension ecosystems are a better daily driver.
Frequently Asked Questions
Is Avant Browser free?
Can Avant Browser use Chrome extensions?
Is Avant Browser still maintained?
Why would I need three rendering engines?
Features & How-To Guide
| # | Feature | How to use |
|---|---|---|
| 1 | Tabbed browsing | Ctrl+T opens a new tab › Ctrl+W closes a tab › Ctrl+Tab switches between tabs. |
| 2 | Rendering engine switching | Click the engine icon on the toolbar › Select Trident, Gecko, or WebKit/Blink › The page reloads in the new engine. |
| 3 | Ad and popup window blocking 2 | Tools › Avant Browser Options › Content Filtering tab › Check popup and ad blocking. |
| 4 | Closed bookmark restoration | Ctrl+Z restores the last closed tab. History menu › Recently Closed Tabs › Click a tab to restore it. |
| 5 | Private mode | File › New Private Tab › Browse without saving history or cookies. |
| 6 | Portable version without installation | Download the portable version › Extract to a folder › Run avant.exe from a USB drive. |
| 7 | Automatic form filling | Tools › Auto Fill Forms › Save personal data › The program fills in forms with a single click. |
| 8 | Built-in download manager | Tools › Download Manager › Displays a list of downloading files with progress bars. |
| 9 | Screen split into multiple pages | View › Split View › Display two pages side by side in a single window. |
| 10 | Browser appearance-changing skins | Tools › Skin › Download skins from the Avant website › Select and apply a new interface appearance. |
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