The best alternatives to Bl@ckbook are Hater, Hackathon Match, and Meetwo. If these 3 options don't work for you, we've listed a few more alternatives below.
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Hater is like Tinder, but it matches people based on what you hate, not on what you love. No more missed red flags or surprising annoying habits: get it all out of the way up front.
Hackathon Match is dating site for Hackathons! Built primarily for the Product Hunt Global Hackathon, to get as many people hacking as possible. Users are able to list themselves and search the other participants by the skills have have and those they looking for.
Meetwo is a dating and social app promoting individuality, respect and empowerment. We use chemistry and fun to provide opportunities for you to make real connections by showing the genuine you. And that’s basically what makes Meetwo so addictive.