CALCONIC_ - Build & add interactive calculators to your website! Choose from more than 50 premade calculators or build your own from scratch. No coding required. Free plan available. Zapier Integration. Publish Anywhere.
Fancybox - fancyapps.com - Fancy App Store
NI AWR Design Environment - NI AWR Design Environment is a circuit design and simulation solution.
PhotoSwipe - JavaScript gallery, no dependencies.
iWinSoft Image Converter - iWinSoft Image Converter is a batch image processor that allows the user to convert multiple images to most popular vector and raster image formats including EPS, PSD, PDF, TPIC, PNG, JPG and all types of RAW formats.
Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.