1. CollegeBoard.org
CollegeBoard offers a Question of the day, Sample Questions, Tutorials and Practice Tests for the SAT. This doesn’t require any login or additional information. In addition to having ways to practice the SAT, CollegeBoard also offers dozens of test taking strategies.
2. Khan Academy
Khan Academy has full-length SAT practice tests available and offer free, personalized practice based on your diagnostic test results! You can also find booklets, videos, etc. on their website. No login required.
3. Test Prep Review
Test Prep Review offers practice for many different standardized tests. This site allows you to quiz yourself on SAT sections, as well as pick and choose which types of problems you would like to hone your skills on.