The four popular Paragon alternatives discussed in this article are Nango, Embedded Tray.io, Merge.dev, and Apideck. While all of them offer embedded iPaaS capabilities, each has its own strengths and weaknesses. Nango stands out for its comprehensive integrations platform with pre-built integration use cases, unified APIs, and a large community of engineers. Tray.io is suitable for building one-off bespoke integrations and customizing the integration for individual customers. Merge.dev offers a unified API approach but lacks customization options and has limited data coverage. Apideck provides a wide range of categories and a ready-to-use portal to display supported integrations, but its customization options are limited. Each alternative has its own pricing model, with Nango offering a generous free tier, Tray.io requiring a demo and sales team contact, Merge.dev offering a free tier with limited access, and Apideck providing a free tier with around 5k calls per month.