FoxyProxy

FoxyProxy is a free, open-source browser extension that replaces the limited proxy management built into Firefox and Chrome, letting users define sophisticated rules for when and how to route traffic through proxies. Rather than using the browser's built-in proxy settings which typically offer only an all-or-nothing choice between no proxy or one fixed proxy, FoxyProxy allows each tab to use a different proxy, each domain pattern to use a different proxy, and each application scenario to have a saved configuration. The extension has been in continuous development since 2006 and has millions of active users.

FoxyProxy comes in two variants: Standard and Basic. FoxyProxy Standard offers the full feature set including regex-based URL patterns, keyboard shortcuts, container support, and per-tab proxy assignment. FoxyProxy Basic is a simpler version for Chrome that covers the essential use cases without the advanced pattern matching. Both versions are completely free, require no account, and accept proxies from any provider. A user can bring their own proxies from a paid provider, use free proxies, or add proxies from multiple sources all in the same browser, switching between them based on rules.

The protocol support includes HTTP, HTTPS, and SOCKS5, covering the proxy types most users encounter. FoxyProxy does not support SOCKS4 or older protocol variants, which is not a practical limitation for modern proxy usage. The extension works with third-party proxies, meaning users can configure proxies from any proxy service or their own proxy server, and FoxyProxy handles the routing. There is no requirement to use FoxyProxy's own proxy service (though FoxyProxy does operate proxy servers as a separate business for users who prefer a managed option).

The core feature is URL pattern matching. Users define rules by specifying domain patterns using wildcards or full regular expressions. A rule might specify that all traffic to *.example.com routes through Proxy A, while api.example.com specifically routes through Proxy B, and *.google.com routes through Proxy C or bypasses the proxy entirely. Each rule can be assigned a proxy, a list of proxies with automatic failover, or disabled to pass traffic directly without proxying. Patterns use standard wildcard syntax (*.example.com) for simple matching, or regular expressions for complex matching.

Beyond URL patterns, FoxyProxy allows per-browser-tab proxy selection. A user can open one tab for web browsing on one proxy and another tab for development work on a different proxy, both in the same browser window, each using their assigned proxy without interference. In Firefox specifically, FoxyProxy integrates with the browser's container feature, allowing different containers (like Work and Personal) to automatically use different proxies.

The interface is accessible even for new users. A popup menu in the toolbar shows all configured proxies with colored icons for quick identification. Clicking an icon switches the active proxy for the current page or tab. Keyboard shortcuts can be set for frequently-used proxy switches, making it possible to toggle between proxy configurations with a keystroke. For more detailed configuration, the options page shows all defined proxies, all rules, and provides editors for modifying each.

Proxy list management is straightforward. Users add proxies by entering hostname, port, protocol (HTTP, HTTPS, or SOCKS5), and optional authentication credentials (username and password). Multiple proxies can be grouped together, and when a group is selected, FoxyProxy attempts each proxy in sequence until one works, providing automatic failover. If all proxies in a group fail, FoxyProxy can fall back to direct connection or to another proxy group, depending on configuration.

One of FoxyProxy's strongest points is transparency. A right-click context menu on any page shows which proxy is currently active and allows switching immediately from the menu. If a proxy fails, FoxyProxy logs the failure and falls back according to the configured rules, without requiring user intervention. The extension includes a request log showing each request, its destination, and which proxy handled it, making it easy to debug why a particular site did or didn't proxy as expected.

The open-source nature of FoxyProxy is significant. The code is published on GitHub under an open license, allowing security researchers to audit it, developers to contribute fixes or features, and anyone to verify that it does what it claims without hidden behavior. This transparency is increasingly important for tools that handle network traffic, as many proxy solutions have been found to include tracking, advertising injection, or other unexpected behavior. FoxyProxy's open development model reduces that risk.

Documentation is available on the official site and through the browser extension help pages. Guides cover basic setup, advanced pattern matching, importing and exporting configurations, and integration with various proxy providers. The help section includes FAQs addressing common issues like authentication problems, proxies not working for certain sites, and how to test whether a proxy is actually being used.

FoxyProxy's limitations are mostly in scope. It controls only browser traffic, not system-wide application traffic. A torrent client, a game, or a desktop application will not use FoxyProxy's configured proxies unless that application has its own proxy settings and you configure it separately. For browser-only needs, this is not a limitation. FoxyProxy also does not support rotating proxies (automatically changing IP on every request) without external tools; it selects a proxy from the list based on rules but uses the same IP for multiple consecutive requests. Users who need automatic IP rotation need to combine FoxyProxy with a service that provides rotating IPs, or use a different tool.

Authentication handling is secure. Credentials are stored encrypted within the browser's extension storage, not sent to any external server or logged unencrypted. FoxyProxy supports both basic HTTP authentication and proxy authentication (username and password), handling both transparently for each proxied request.

Performance impact is minimal. FoxyProxy runs efficiently in the browser process and does not significantly slow page loads. The pattern matching engine processes rules quickly even with dozens of rules defined, and the extension uses memory efficiently even with many proxies configured.

Compared to browser built-in proxy settings, FoxyProxy offers flexibility and control that the native functionality completely lacks. The built-in proxy dropdown is binary: use the default proxy or use nothing. FoxyProxy enables sophisticated routing where different sites use different proxies, different tabs use different proxies, and rules can be enabled or disabled on demand. Compared to paid proxy browser extensions or VPN services, FoxyProxy is free and independent, requiring no subscription and no lock-in to a particular proxy provider.

FoxyProxy is the choice for browser users who need to manage multiple proxies, route different traffic through different proxies based on rules, and maintain control over their proxy configuration. Its open-source nature, zero cost, and ease of use make it practical for individuals, developers testing geolocation features, security researchers, and anyone who needs flexible proxy switching within a browser without requiring a VPN or other system-wide solution.