or any other test prep company offer them..
offers online tests these days - they are moving away from physical media tests.Veritas
also offers online tests which are agnostic in terms of the platform.
More options are here: all-gmat-cat-practice-tests-links-prices-reviews-77460.html
P.S. Veritas Prep
has been offering a free question bank: http://www.veritasprep.com/gmat-question-bank/
Founder of GMAT Club
Just starting out with GMAT? Start here... | Want to know your GMAT Score? Try GMAT Score Estimator
Need GMAT Book Recommendations? Best GMAT Books
Co-author of the GMAT Club tests
Have a blog? Feature it on GMAT Club!