There isn't any competition in the free-ish space, no. But there are some big-boy options: Incapsula/Imperva, DOSarrest, Akamai, SiteLock, Radware, and a few other smaller players. These are complex setups where you at minimum need to be running an AS and own your IP space and infrastructure -- you get all sorts of cool solutions like sending (router) flows to them to monitor your traffic, and when an attack is detected they'll automatically advertise your IP space for you, scrub traffic via witchcraft and GRE-tunnel your clean traffic back to you. But don't bother contacting them if you have less than four figures to spend monthly -- if you don't have at least a few cabinets of gear (if not your own DC) you're not the target market.
Cloudflare is dominating the "consumer-grade" market, but not really past that.