Sidepop is described as 'social proof marketing tool, that allows you to embed a social proof widget in less than 2 minutes. In Sidepop you can customize everything'. There are more than 10 alternatives to Sidepop for a variety of platforms, including Online / Web-based, SaaS, Self-Hosted solutions, Wordpress and Shopify. The best alternative is NotificationX, which is both free and Open Source. Other great apps like Sidepop are Nudgify (Paid), ProveSource (Paid), ProofGain (Freemium) and Cue App (Paid).
Nudgify is a Social Proof and Sales Pop app. It works with e-Commerce platforms (Shopify, WooCommerce, Magento, PrestaShop Wix), SaaS & more. More than a simple Social Proof app (cf. ProveSource, CartKit, Proof Pulse), it goes beyond Social Proof.
SocialProve uses social proof notifications to increase website conversion rates by +15% in average. When people visit your website, they will see small tiny popups showing other people also using your website. They feel more likely to use your website.
Social proof widget from future - There are many potential customers visiting your website but leave it because they don't believe what you say. Building customer trust is the key point for better conversion rate.