PhoneGap vs Ruru: What are the differences?
PhoneGap: Easilily create mobile apps using HTML, CSS, and JavaScript. PhoneGap is a web platform that exposes native mobile device apis and data to JavaScript. PhoneGap is a distribution of Apache Cordova. PhoneGap allows you to use standard web technologies such as HTML5, CSS3, and JavaScript for cross-platform development, avoiding each mobile platforms' native development language. Applications execute within wrappers targeted to each platform, and rely on standards-compliant API bindings to access each device's sensors, data, and network status; Ruru: Native Ruby extensions written in Rust. Native Ruby extensions in Rust.
PhoneGap can be classified as a tool in the "Cross-Platform Mobile Development" category, while Ruru is grouped under "Language Extensions".
PhoneGap and Ruru are both open source tools. It seems that PhoneGap with 4.15K GitHub stars and 975 forks on GitHub has more adoption than Ruru with 752 GitHub stars and 30 GitHub forks.