From the Coalition Application's website:
An unprecedented coalition of diverse public and private colleges and universities has come together to improve the college admission application process for all students. The Coalition has developed a free platform of online tools to streamline the experience of applying to college. The initial iteration of the platform —including applications for admission to Coalition schools— is now available for students in high school.
This tool enables students to apply to any of its 113 member institutions using just one application. The focus of the coalition is to promote college access, especially to low-income and underrepresented students.