Based on our record, DNSPerf seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I have no idea about the list on dnsperf.com for example digital ocean dns isn't fast at all, but it is top 5 on the list, and quite a few service on the list doesn't offer to small individual users. Source: almost 2 years ago
Cloudflare (at least for DNS if you don't want other features... See dnsperf.com for why). Source: about 3 years ago
MxToolBox - All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.
Nslookup - Little civil argument one of the completely essential administrations basic to the usefulness of the Internet is the Domain Name System (DNS).
intoDNS - IntoDNS checks the health and configuration and provides DNS report and mail servers report.
Uppy.io - Next open source file uploader for web browsers
Dnsstuff - DNSstuff offers DNS tools, Network tools, Email tools, DNS reporting and IP information gathering.
Trezor.io - The Hardware Bitcoin Wallet