PhoneGap: PhoneGap is a framework developed by Adobe Systems. It is used for developing mobile applications and can be used by anyone with the knowledge of CSS, HTML, JScript. PhoneGap is a propitiatory version of Apache Cordova and provides extra features apart from the existing Cordova.
IONIC: IONIC framework is used to build cross-platform mobile apps using web technologies like CSS, HTML. Released in 2013, it was built on top of Angular JS and Apache Cordova.