The best alternatives to Deals Killer are Onboarded , LaunchSpace, and BetterVouchers. If these 3 options don't work for you, we've listed a few more alternatives below.
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Snowflake Startup Challenge— Win investment & global exposure with Snowflake and NYSE
LaunchSpace collects the best software deals on the net every week from sites like AppSumo, Stacksocial, independent developers, facebook pages and more and bring them together for you in one place as a Google Chrome Extension.