VsisProxy — Quản lý proxy HTTP & SOCKS5 by vsis

VsisProxy is a fast, local-first proxy manager for Firefox. Paste any proxy (HTTP / HTTPS / SOCKS5 / SOCKS4), switch instantly, or set up auto-switch rules by URL. Inspired by SwitchyOmega but built fresh for Manifest V3.

Features
- Paste single or bulk proxies in any common format: ip:port, ip:port:user:pass, user:pass@ip:port, http://, https://, socks5://, socks4://
- One-click switch per Firefox window
- SOCKS5 with username/password authentication (Firefox-only)
- Auto-switch by URL (wildcard / host / regex rules) - like SwitchyOmega
- Profiles with custom colors and labels
- Built-in proxy test (latency + IP echo)
- All data stored locally; optional Firefox Sync
- Vietnamese + English UI

Privacy
- No telemetry, no analytics, no tracking
- No content scripts injected into web pages
- Outbound network calls happen ONLY when you click "Test proxy"
- Full privacy policy: https://doc.vsis.net/downloads/vsisproxy-privacy.html

Free, works with ANY proxy (not just VSIS). Support: vsisnet@gmail.com