CZL Browser
Account isolation · Dedicated proxy · Anti-detect fingerprint
A free Windows desktop tool by CZL. Assign each account its own browser instance and dedicated proxy exit, with a built-in proxy pool, multi-kernel management, and Ctrl+K quick launch. All configs and data stay local — built for cross-border e-commerce, social media operations, and localized testing.
Windows installer & portable editions — ready out of the box
By CZL — Technology & Internet Services
Interface Preview
Dashboard, instance list and proxy pool — fully local management.
Dashboard
See total instances, running instances, proxy nodes and kernel versions — full status at a glance.
Instance List
Manage all browser instances, filter by status, proxy, kernel, group or keyword, start and stop in one click.
Proxy Pool
Maintain HTTP / HTTPS / SOCKS5 proxy nodes centrally, check latency and IP health to pick working exits.
Built for Multi-Account Operations
One account, one instance, one proxy, one fingerprint — isolation at the root.
Instance Isolation
Each account gets its own browser instance with fully isolated cookies, cache and local storage — preventing account linkage at the root.
Dedicated Proxy Binding
Bind each instance to its own proxy exit. Supports HTTP / HTTPS / SOCKS5 proxies, mapping each account to a distinct exit IP.
Fingerprint Isolation
Give each instance an isolated browser fingerprint. Timezone auto-aligns with the proxy exit locale to reduce cross-account linkage.
Unified Proxy Pool
Maintain HTTP / HTTPS / SOCKS5 proxy nodes centrally, auto-check latency and IP health to quickly pick working exits.
Multi-Kernel Management
Maintain multiple Chrome kernel versions and set a default. Download and switch in-app; different instances can use different kernels.
Ctrl+K Quick Launch
Search instances by name, tag or keyword and open the target instantly — locate and launch in seconds, however many you have.
Backup & Restore
Package configs, instance data and proxy settings in one click. Restore directly on a new machine — no reconfiguration needed.
All Data Stays Local
Configs and runtime data are stored locally and fully under your control, ideal for long-term use and self-managed backups. Free, no ads.
Five Steps to Get Started
From download to your first isolated instance in minutes.
Download & Install
Download the Windows installer or portable edition, then sign in with your CZL Connect account to start.
Prepare a Kernel
Open Kernel Management, use the in-app download to prepare a Chrome kernel and set it as default.
Configure Proxies
In Proxy Pool, add HTTP / HTTPS / SOCKS5 proxy nodes and check their latency and health status.
Create an Instance
In the instance list, create a config: pick a kernel, bind a proxy, set tags and launch parameters.
Launch & Verify
Start the instance, visit an IP-check site, and confirm the exit IP and region match expectations.
FAQ
A few questions you might have before getting started.
Is it really free? Any limitations?
Are my instance data and proxy configs uploaded to the cloud?
Which operating systems are supported?
Do I need to prepare the browser kernel myself?
How do I avoid account linkage across multiple accounts?
Which proxy protocols are supported?
How do I report issues or request features?
Download Free, Use Now
Windows installer & portable editions — ready out of the box. Continuously maintained.
- Completely free, no hidden fees
- Windows installer & portable editions
- Configs and data stored locally, fully yours
- Continuously maintained
Free by CZL
About CZL →CZL focuses on AI, technology and internet services. CZL Browser is one of its free desktop tools built for multi-account operations.