On the front end, React remains the dominant framework. However, the survey found interest in Vue is steadily increasing, while Angular is losing steam. Developers are at a 3.8 [on a scale up to 5] when it comes to their overall happiness with front-end tools. On the back end, Express is by far the most popular contender with Koa, Meteor and Hapi slowly making their way behind Express. For testing, Jest and Enzyme stand out with high satisfaction ratings.