I have been enjoying doing web development using Python with Django and Flask, Ruby on Rails and React.js with Node.js
I also did some mobile development (Swift and exploring React Native). Besides that I find building test frameworks really entertaining.
Web application helping small hotel and B&B owners to manager their properties. Functionality includes availability management, rooms and rates setup, reservations, check-ins and check-outs etc.
My little experiment with iOS development and Swift: an app which uses machine learning module to recognize what is on the photo.
Little clone of Twitter functionality as a project to explore React and Redux