The U.S. Department of State provides free visa application forms on its U.S. Visas website. Specifically, an online version of form DS-160, the nonimmigrant visa application, is available in a fillable version, according to the U.S. Visas website.
Form DS-160 is required for those wishing to visit the United States for business or tourism, and it's also the standard form used when applying for a student visa, notes the U.S. Department of State. Those applying for a visa using DS-160 must also upload a photograph and attend an interview at a U.S. embassy or consulate. Applicants must also pay a fee and must hold a passport in their country of origin. Those applying for a student visa must also have been accepted by an approved school.