Chami.com: WhoIsNot  
   Finds reserved, on-hold and available variations of domain names. Detailed list of features, free trial version, FAQ. [Windows]
   http://www.chami.com/whoisnot/

Men & Mice  
   QuickDNS and DNS Expert tools. Free trial versions, support page including DNS glossary, FAQ, mailing list. [MacOS, Windows]
   http://www.menandmice.com/index.html

Moreton Bay DHCP Server  
   Free, open source, cross-platform solution. [Linux, Windows]
   http://www.moretonbay.com/dhcpd/

PowerDNS  
   PowerDNS is a non-BIND nameserver based on open source and proprietary software for registries, registrars, ISPs, web hosts and corporate servers.
   http://www.powerdns.com/

Internet Software Consortium  
   Non-profit corporation dedicated to developing and maintaining production quality open source reference implementations of core Internet protocols. BIND is available here for free.
   http://www.isc.org/

Simple DNS Plus  
   Free trial version, screenshots, client testimonials, FAQ, tutorials. Also provides a Web-based DNS lookup tool.[Windows]
   http://www.jhsoft.com/

Cyberspace HQ: DeEnesse  
   Suite for Windows NT and Windows 95. Free trial version, screenshots, support page.
   http://www.cyberspacehq.com/deenesse/

ZoneMaster  
   Open source project manages nameservers and zonefiles. Free download, development status, screenshot. [Perl, PHP source]
   http://www.zonemaster.org/

Cisco: Network Registrar  
   A scalable DNS server. Free trial version, FAQ, technical documentation. [Windows]
   http://www.cisco.com/warp/public/cc/pd/nemnsw/nerr/index.shtml

QIP  
   IP services management. Screenshots, trial downloads, documentation. [Unix, Windows]
   http://qip.lucent.com/

Djbdns  
   Domain Name System tools, links, and tips. [Unix]
   http://cr.yp.to/djbdns.html

DNS Boss  
   Management software for Solaris, NT, Linux. Free trial version, documentation and instruction.
   http://www.dnsboss.com/

UltraDNS Corporation  
   DNS management and directory infrastructure services. News, FAQ, DNS primer.
   http://ultradns.com/

DHCP/Bootp Server  
   Free for non-commercial use. [Windows]
   http://home.t-online.de/home/hanewin/dhcp-e.htm

Microsoft: Windows 2000 Server  
   Documentation and support for this product. Service packs and updates available.
   http://www.microsoft.com/windows2000/server/default.asp

The Manual Page: DHCP-DNS  
   Free Perl package that allows dynamic DNS update using your DHCP server. GPL license. News, and a glossary of relevant technical terms.
   http://www.themanualpage.org/dhcp-dns/

MetaInfo  
   DNS and DHCP server software for MS Windows, Linux, and Solaris.
   http://www.metainfo.com/

Life with djbdns  
   Examples and howtos for djbdns.
   http://www.lifewithdjbdns.com/

Adonis DNS Management Server  
   plug-and-play 1u rack-mount Linux server hardware with BIND pre-installed
   http://www.bluecatnetworks.com/adonis/index.html

MaraDNS  
   A public-domain, open source Domain Name Server which offers both authoritive and caching features. Its main goals are security and simplicity.
   http://www.maradns.org/

Name Commander  
   Package with monitoring and audit tools, plus web monitoring and command line controls. [FreeBSD, Linux, Solaris, Windows NT]
   http://www.incognito.com/products/NameCommander/overview.asp

Linux NIS(YP) Server and Tools  
   The Network Information Service (NIS) provides a simple network lookup service consisting of databases and processes. It was formerly known as Sun Yellow Pages (YP).
   http://www.linux-nis.org/nis/