Nativator - Convert any web app to native mobile app fast & easy. Nativator.
AppConvertly.com - AppConvertly - convert your website to Android & iOS app. No coding required. Easy solution to reach new audience in 5 minutes https://www.appconvertly.com/
Website 2 APK Builder - Convert your HTML, CSS, JS and all other web content into an Android App within seconds.
Median.co - Median.co (formerly GoNative.io) is the industry leading solution used to build iOS and Android webview apps. Get started for free and turn any website into a full-feature mobile app in seconds.
FLTK - Fast Light Toolkit - Fast Light Toolkit (FLTK)
PhoneGap - Easily create apps using the web technologies you know and love: HTML, CSS, and JavaScript.