SnapWidget - SnapWidget is the best way to display your Instagram and Twitter photos on your website or blog.
Bootstrap - Simple and flexible HTML, CSS, and JS for popular UI components and interactions
GetSiteControl - Website popup builder & email marketing suite for ecommerce
Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.
EmbedFeed - Social media aggregator approved by major social media networks to collect social media content from your business profiles or mentions by other users and display them on any website, with one line of code.
Materialize CSS - A modern responsive front-end framework based on Material Design