Free Proxy Tools
The two checks we run ourselves before handing a line to a customer, open to everyone. No sign-up, nothing stored.
Recommended antidetect browsers
Which antidetect browser works best with a dedicated SIM? Undetectable.io is the one we recommend. Give each profile its own SimProxies SIM, set the profile's time zone and language to the SIM's city, and paste the HTTP or SOCKS5 details. GoLogin is a good second choice.
Undetectable.io
Free plan to start, Windows and macOS, local and cloud profiles. Give each profile its own SimProxies line.
Get Undetectable.io ↗GoLogin
Free plan with 3 profiles, Windows, macOS and Linux plus phone apps. Paste a SimProxies line as host:port:user:pass.
Get GoLogin ↗Partner links. Every antidetect browser that takes an HTTP or SOCKS5 proxy works with our lines; these are the two we recommend.
Go deeper with IPFighter
For browser fingerprinting, bot detection, DNS and WebRTC leak tests we point customers to IPFighter's free suite, which works well alongside a SimProxies line:
IP score & lookup ↗ Browser fingerprint ↗ Bot detection ↗ DNS leak test ↗ WebRTC leak test ↗ IPFighter proxy checker ↗
Ready to start?
Eight live US metros, real carrier SIMs, unlimited rotation. Plans from $2 for 2 hours or $5/day.