Tool	Operating System / Platform	Free Tier: Time Limit	Free Tier: Bandwidth/Space Limit	Free Tier: Tunnel Count Limit	Other Free Usage Restrictions
LocalXpose	Windows, Linux, macOS (CLI)	Session timeout after hours	Bandwidth capped	Limited concurrent tunnels	Random subdomains only
LocalTunnel	Cross-platform (Node.js/npm)	No explicit time limit	No enforced cap	No enforced limit	Unstable; subdomains not guaranteed
Serveo	Cross-platform (SSH)	Ends when SSH closes	No enforced cap	Limited concurrent tunnels	Dependent on SSH stability
Pinggy	Cross-platform (SSH)	Ends when SSH closes	May throttle bandwidth	Limited concurrent tunnels	Random subdomains only
Ngrok	Windows, Linux, macOS (CLI)	8-hour session limit	40 connections/minute	1 tunnel active	Random subdomains only
Cloudflare Tunnel	Windows, Linux, macOS (cloudflared)	No time limit	No bandwidth cap	Unlimited tunnels	Requires Cloudflare account + DNS setup
Telebit	Cross-platform (Node.js/npm)	No explicit time limit	Bandwidth capped	Limited concurrent tunnels	Random subdomains only
Pagekite	Cross-platform (Python/binary)	No explicit time limit	Bandwidth capped	Limited concurrent tunnels	Requires registration for custom domains
FRP	Windows, Linux, macOS (self-hosted)	-null-	-null-	-null-	Self-hosted; limits depend on your server