The best alternatives to NearSt are Stripe, Shopify, and FeedbackLink. If these 3 options don't work for you, we've listed a few more alternatives below.
FeedbackLink is a new feedback tool that gets your happy customers to tell the world, and lets you survey the rest. Get more reviews on Trustpilot, G2 etc. or have customers share on FB or tweet. Conversely, issues go directly to you and aren't lost online.