From promising new start-ups to billion-dollar ideas going global, here are the entrepreneurs skyrocketing to success in 2019. While we pride ourselves on keeping our finger on the pulse of start-up activity (indeed, we profile a new company every week), we also keep track of the stalwarts of the entrepreneurial arena, including those who have seen massive success with a single great idea. From familiar to fresh faces in the scene, from past Inspirefest speakers to future ones, here is our pick of promising entrepreneurs you should keep your eyes peeled for in 2019.