Is Undertale the new Homestuck?

Is Undertale the new Homestuck? I'm not interested in the slightest but it is currently flooding the internet and i saw the name of one of the HS musicians thrown around as the creator or whatever and wasn't that person the one who made that awful mayor song? Also the Vriska (i think) song is super popular now and there's tons of remixes because it was featured in the game. I'd appreciate it if someone explained it to me because i trust you guys more than i trust Google.