Determining the “best” online college course in the USA depends on various factors, including your interests, career goals, learning style, and academic requirements. However, here are some popular online course providers and platforms known for offering high-quality courses:

1. Coursera: Coursera partners with universities and organizations worldwide to offer a wide range of courses, certificates, and degree programs. It covers diverse subjects such as business, computer science, data science, humanities, and more.
2. edX: Founded by Harvard University and MIT, edX provides online courses from top universities and institutions globally. It offers courses in subjects like engineering, computer science, languages, and professional development.
3. Udemy: Udemy is a popular platform offering a vast selection of online courses on various topics, including technology, business, personal development, and creative arts. Courses are created by industry experts and updated regularly.
4. LinkedIn Learning: Formerly known as Lynda.com, LinkedIn Learning offers thousands of courses taught by industry professionals. It covers topics such as leadership, software development, graphic design, and photography.
5. Khan Academy: Khan Academy provides free online courses, lessons, and practice in subjects like math, science, economics, humanities, and test preparation. It’s suitable for learners of all ages, from K-12 to college-level.
6. MIT OpenCourseWare (OCW): MIT OCW offers free access to course materials from nearly all undergraduate and graduate-level courses taught at the Massachusetts Institute of Technology (MIT). It covers a wide range of subjects and disciplines.
7. Harvard Online Learning: Harvard University offers various online learning opportunities through Harvard Online Learning, including free and paid courses, certificates, and degree programs.
8. Stanford Online: Stanford University’s online platform provides access to a range of courses, certificates, and professional education opportunities in fields such as engineering, business, healthcare, and more.

When choosing an online college course, consider factors such as course content, instructor expertise, accreditation, flexibility, cost, and student reviews. It’s also essential to verify that the course meets any academic or professional requirements you may have.