At this point it's safe to say that there aren't any actual competitors for ChipMixer -- all other mixers have not yet proven to be fully trustworthy, which results in them having a hard time attracting more people to use their service. I am glad that ChipMixer is building itself up nicely, otherwise I would basically be forced to expose my funds to great risks when making use of a mixing service that is relatively new in the game, and that's obviously not something to look forward to.