Momentum.ai is described as 'Pay for clicks that get even more clicks' and is an app in the Social & Communications category. There are four alternatives to Momentum.ai for a variety of platforms, including Online / Web-based, SaaS, Squarespace, Weebly and WiX.com. The best alternative is SociableKIT. It's not free, so if you're looking for a free alternative, you could try Booscha or Elfsight.
SociableKIT is a website plugin that will help you display social media content on your website. It allows you to customize the look & feel of your social media contents and display them on your website automatically.