Domain Registrars

There are many registrars to choose from, and since they all need to be accredited by ICANN, the core functionality is similar. The real differences are in pricing, TLD support, customer service, and how aggressively they try to upsell you.

Cloudflare Registrar

My current favorite. Cloudflare claims not to add a profit margin on domain registrations — you just pay the base price. For most TLDs, that makes them one of the cheapest options. They also have great support and API access. The downside is they don’t support as many TLDs as some other registrars, and occasionally a TLD’s base fee is higher through Cloudflare than elsewhere.
https://cloudflare.com/products/registrar

Namecheap

My previous favorite, and still highly recommended. Competitive prices, good customer service, wide TLD support, and they don’t annoy you with upsells. For TLDs that Cloudflare doesn’t support or where their pricing is higher, Namecheap is my go-to alternative.
https://namecheap.com

Name.com

Part of Identity Digital, which owns and operates many newer TLDs like .chat, .domains, and .ninja. Useful for TLDs you can’t find on Cloudflare or Namecheap. I use it for my .jobs domains.
https://name.com

GoDaddy

The largest registrar by far. I personally avoid them — too many upsells, a confusing interface, and a questionable track record on both ethics and security. But they’re hard to avoid entirely because so many domains are registered there.
https://godaddy.com

Network Solutions

One of the earliest registrars, active since the early days of domain registration. Still popular for legacy domains registered long ago. If you backorder and win an old domain, there’s a decent chance it’ll be at Network Solutions. I transfer domains away from there as soon as possible — poor support and high prices.
https://networksolutions.com