TADNS is small, portable asynchronous DNS lookup library written in ANSI C. Works on Windows and UNIX. Extremely simple and clean API. The sourcecode resides in single .c file.
IncrediBL is a project that aims to provide a respected and accountable DNSBL service for various communication systems like IRC and e-mail. The code is primarily used by the IncrediBL service itself, but it can also be used to create a separate DNSBL.
THIS PROJECT HAS MOVED TO GOOGLE CODE!! An authoritative-only DNS server with a pluggable architecture for determining how to resolve each request. New modules may be written in Python to control how names are resolved.
Open domains is OPen SourceCode, it will help you become a free domain name provider. You can create any subdomain redirect with opendomains. Build in Php4/Mysql4 . You can run it in Linux / Windows Hosting. Easy to install and create Short Domain Name
Antdns provides a minimalistic management interface for the database backend of Bind-DLZ. If need be, the open structure of both code and database schema can be exploited to provide a seamless integration within any current website.
This project is an extension of the OpenSRS client code distributed by Tucows. Many additional features and enhancements have been added, making it easier to configure, extend and implement.