BIND (Berkeley Internet Name Domain, previously: Berkeley Internet Name Daemon) is the most commonly used DNS server on the Internet, especially on Unix-like systems, where it is a de facto standard. Supported by Internet Systems Consortium, it was originally created by Paul Vixie in 1988 while working for DEC. ...more on Wikipedia about "BIND"
djbdns is a simple and secure DNS implementation created by Daniel J. Bernstein due to his frustrations with repeated BIND security holes. There is an as-yet-unclaimed $500 prize (see External Links, below) for the first person to find a security hole in djbdns. ...more on Wikipedia about "Djbdns"
MaraDNS is a security-aware Domain Name System ( DNS) implementation. It can be configured as an authoritative DNS server, as a "recursive" DNS cache that uses the DNS root nameservers, or as a cache which obtains its information from other recursive DNS servers. ...more on Wikipedia about "MaraDNS"
* Parsing of the "hosts" file: The lookup functions only read the "hosts" file if they cannot off-load their task onto the DNS Client service and have to fall back to communicating with DNS servers themselves. In turn, the DNS Client service reads the "hosts" file once, at startup, and only re-reads it if it notices that the last modification timestamp of the file has changed since it last read it. Thus: ...more on Wikipedia about "Microsoft DNS"
In Internet computing, NSD (for "name server daemon") is an open-source server program for the Domain Name System. It was developed by NLnet Labs of Amsterdam, from scratch as an authoritative name server (i.e., not supporting the recursive caching function). One of the Internet root nameservers was switched to NSD on February 19, 2003. ...more on Wikipedia about "NSD"
pdnsd is a proxy DNS server created originally by Thomas Moestl and currently mantained by Paul Rombouts. ...more on Wikipedia about "Pdnsd"
Posadis is a GPL-licensed DNS server for Windows and Unix that uses a zone file format that is compatible with BIND zone files. Posadis is part of a suite which includes graphical configuration and zone file management programs. ...more on Wikipedia about "Posadis"
PowerDNS is a versatile DNS server, written in C++ and licensed under the GPL. It runs on most Unix derivatives and on Microsoft Windows. PowerDNS features a large number of different backends ranging from simple BIND style zonefiles to relational databases and load balancing/ failover algorithms. A DNS recursor is also included as a separate program. Anecdotal evidence suggests that around 10% of all world domains are powered by this nameserver, 49% of the German .DE zone and 7% of the .NET zone. ...more on Wikipedia about "PowerDNS"
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