dhcpcd is described as 'Implementation of the DHCP client specified in RFC2131. It strives to be a fully featured, yet very lightweight DHCP client' and is an app. There are three alternatives to dhcpcd for Linux, BSD, Self-Hosted, Mac and Windows. The best dhcpcd alternative is dnsmasq, which is both free and Open Source. Other great apps like dhcpcd are BIND and MaraDNS.
Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server. It is designed to provide DNS and, optionally, DHCP, to a small network. It can serve the names of local machines which are not in the global DNS.
BIND is by far the most widely used DNS software on the Internet. On Unix-like operating systems it is the de facto standard. It provides a robust and stable platform on top of which organizations can build distributed computing systems with the knowledge that those systems are...
MaraDNS implements the Domain Name System (DNS), an essential internet service. MaraDNS is open source software: This means that anyone is free to download, use, and modify the program free of charge, as per its license.
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dhcpcd is a dhcp client. dnsmasq is a dhcp server