PowerDNS - PowerDNS offers open source DNS software, services, and support.
Unbound - Unbound is a validating, recursive, and caching DNS resolver.
dnsmasq - Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server.
cubeupload - Share images online with zero compression, completely free.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Knot DNS - High-performance authoritative-only DNS server