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troglobit/inadyn

Free

In-a-Dyn is a dynamic DNS client with multiple SSL/TLS library support

FreeFree tier
Type
Open Source
Visit Website GitHub (38 stars)

About troglobit/inadyn

Inadyn, or In-a-Dyn, is a small and simple Dynamic DNS (DDNS) client with HTTPS support. It is commonly available in many GNU/Linux distributions and used in off-the-shelf routers and Internet gateways to automate the task of keeping an Internet domain name synchronized with a public IP address. The client supports multiple DDNS providers via dedicated plugins, including FreeDNS, DuckDNS, No-IP, Google Domains, and many others. It can maintain multiple host records with the same IP address, use a script, the address from an Internet-facing interface, or rely on the provider's IP address change detector. Inadyn supports SSL/TLS for secure communication. Note: As of October 2025, this project has been archived and is no longer maintained.

Key Features

Small and simple Dynamic DNS (DDNS) client with HTTPS support
Supports multiple DDNS providers via dedicated plugins (FreeDNS, DuckDNS, No-IP, Google Domains, etc.)
Can maintain multiple host records with the same IP address
IP detection via script, network interface, or provider's change detector
Periodic and on-demand IP updates
SSL/TLS library support for secure communication

Pros & Cons

Pros
  • Small, simple, and lightweight – suitable for embedded devices and routers
  • Widely available in GNU/Linux distributions and open source
  • Supports a broad range of DDNS providers including free and paid services
  • Flexible IP address detection methods (script, interface, provider)
  • Uses HTTPS and supports multiple SSL/TLS libraries for secure updates
Cons
  • Archived as of October 2025 and no longer maintained – no further updates or security patches
  • Limited to DDNS functionality – does not include additional network services
  • Requires manual configuration of provider and host settings

Best For

Automatically keep an Internet domain name in sync with a dynamic public IP addressEnable running Internet servers (e.g., web, mail) on connections with dynamic IP addressesMaintain backup or redundant Internet connections with consistent hostname mappingIntegrate into routers and gateways for seamless DDNS updates

FAQ

What is Inadyn?
Inadyn is a small and simple Dynamic DNS (DDNS) client with HTTPS support, used to keep an Internet domain name synchronized with a dynamic public IP address.
Which DDNS providers are supported?
Inadyn supports many providers via dedicated plugins, including FreeDNS, DuckDNS, No-IP, Google Domains, DynDNS, HE.net, DNSomatic, Dynu, Loopia, and others.
Is Inadyn still maintained?
As of October 2025, the project has been archived by the owner and is no longer maintained. The last release remains available for download.
How does Inadyn detect my IP address?
Inadyn can detect the public IP address using a script, by reading the address from a network interface, or by relying on the DDNS provider's own IP change detector.