ProxyShard/ShardBrowser

What it solves

ShardX is an anti-detect browser launcher designed to prevent websites from identifying and linking multiple accounts or scraping activities to a single user. It solves the problem of browser fingerprinting—where sites use hardware, network, and software signals to create a unique ID for your device—by allowing users to run hundreds of isolated browser identities with consistent, spoofed hardware and network profiles.

How it works

Unlike tools that rely on JavaScript injection, ShardX uses a patched version of Chromium 152. Fingerprint overrides are applied directly within the browser engine (Blink, V8, and the network stack), ensuring that the spoofed values are consistent across iframes, web workers, and headless sessions. It manages isolated user-data directories for each profile and can bind SOCKS5 or HTTP proxies to each identity. It also integrates with ProxyShard for end-to-end QUIC and WebRTC support over SOCKS5 UDP relays to prevent real-IP leaks.

Who it’s for

It is intended for web scrapers, multi-account managers, and users who need to maintain high levels of anonymity and avoid bot detection systems (such as reCAPTCHA v3).

Highlights

• Engine-Level Spoofing: Patches Chromium's C++ engine to spoof GPU, WebGL, WebGPU, audio, screen resolution, fonts, and TLS ClientHello (JA4).
• Four Control Surfaces: Manage profiles via a Desktop UI, a local HTTP API, an MCP server for natural-language orchestration (Claude/Cursor), or standalone SDKs (Python, Node, Rust).
• Comprehensive Profile Library: Includes 170 ready-made device profiles based on real-device samples.
• Advanced Network Hardening: Supports QUIC and HTTP-3 over SOCKS5 UDP relays and prevents WebRTC real-IP leaks.
• Open Source: Distributed under the MIT license and provided for free.