iodine

The premium Open Source alternative to SlowDNS

🎯 Best for:Users needing to bypass captive portals or strict firewalls via DNS.

What is iodine?

A specialized tool that tunnels IPv4 data through DNS servers to establish connectivity in highly restricted environments. It encapsulates network traffic within DNS queries and responses, allowing data transfer where standard ports are blocked.

Tech Stack
CVPN & Network

Why iodine?

  • Bypasses most firewalls
  • Cross-platform support
  • Small binary footprint

Limitations

  • Extremely high latency
  • Requires domain name control
  • Complex server-side setup
3/5/2026
Last Update
580
Forks
18
Issues
ISC
License
Financial Leak Detected

Stop the "SaaS Tax"

Your team could be burning cash. Switching to iodine instantly boosts your runway.

Competitor Cost
-$1,440
/ year (est. based on SlowDNS)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%

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