Browser Multi-Opener: One Browser, Many Profiles
Each profile has its own cookies, login state and environment. Run multiple accounts side by side without interference.
1 free profile · Unlimited with a license key
Why Fenshen
A browser multi-opener built for multi-account operations
Isolated Logins
Every profile gets its own browser data directory. Cookies, logins and cache are fully isolated — run multiple accounts with no cross-account interference.
Per-Profile Environment
Set a per-profile proxy for a dedicated IP, plus independent user-agent, resolution, timezone and language to simulate different devices.
Extension Loading
Import local zip extensions and attach them to specific profiles to compose your toolchain.
Bundled Engine
Download the bundled Chromium with one click — no need to install a browser first.
Window Distinction
Show the profile name in the window title to tell profiles apart at a glance.
Local Data
All data stays on your machine. Nothing is uploaded to the cloud.
Simple, transparent pricing
Try it free first, upgrade when you need more profiles
Free
¥0
- ✓1 profile
- ✓Basic environment config
- ✓Local data storage
Pro
¥9.9/ month
- ✓Unlimited profiles
- ✓All features unlocked
- ✓Continuous updates
Scan to buy via WeChat
Add us on WeChat to purchase a license
qzz18580256051
License is bound to your device · Activate it in the app after purchase
FAQ
How do I get a license key?＋
Scan the QR code to add us on WeChat (qzz18580256051). After purchase we will send you a key to activate.
Can I move my license to another device?＋
The key is bound to your device on first activation. Contact us to rebind if you change machines.
What is the difference between Free and Pro?＋
Free lets you use 1 profile; Pro unlocks unlimited profiles and all features.
Which platforms are supported?＋
Windows and macOS are currently supported.
Is my data safe?＋
All data stays on your computer locally and is never uploaded to any server.
Does multi-opening use more RAM or CPU? What specs do I need?＋
Multi-opening mainly uses RAM — each profile consumes about as much as a separate browser window. A regular office PC runs several profiles smoothly; more profiles call for more memory.
How many profile windows can I open?＋
Free includes 1 profile; Pro is unlimited with multiple windows side by side — the practical limit depends on your hardware.