Mux builds powerful APIs for video encoding, hosting, streaming and data.
Last year an employee there wrote a very interesting and in depth post on how they acquired Mux.com.
They started out on Mux.co which they paid $1,200 for, they then stalked someone on Reddit to get Mux.io, it was secured for a three figure sum according to the article.
They eventually did a deal on a lease to buy basis for the .com.
From the article:
Mux was excited about mux.io victory, but was restless for mux.com. We used a domain broker found through YC connections to find the owner of mux.com. They were open to a deal, but it was going to cost us. There was no way our pre-seed startup could afford 6+ figures outright for a domain name. However, once you’re set on a name and in the negotiation stage, don’t lowball. Desirable domains likely get dozens of offers a week. Make yours stand out and move quickly.