H1BSponsorData is an online research platform for exploring H-1B visa employer and salary information. It brings together more than 6.5 million records and lets users search across over 354,000 employers, 1,000 occupations, and 37,000 cities. The database presents employer filing volumes, reported average salaries, approval rates, and indicators of PERM green card sponsorship, helping users compare organizations and understand patterns in H-1B employment.

The site features rankings of leading sponsors, occupations, and cities, with examples including major technology, consulting, and professional services companies. It also offers educational resources covering H-1B eligibility, the application process, the lottery and timeline, salary and prevailing wage concepts, petition approvals, and employer-sponsored permanent residency. H1BSponsorData states that its information is compiled from publicly available Department of Labor, USCIS, PERM, and Bureau of Labor Statistics data. It is independent of government agencies, does not provide legal or immigration advice, and cautions that filings do not guarantee visa approval and reported salaries may not reflect actual compensation.