World's most comprehensive SAT prep tool. SAT practice tests with 40 Section Tests. Detailed review and explanations at the end of each of the fours Full length Tests, Vocabulary building software and Test Strategies. Foundations on each section of Algebra, geometry, probability, arithmetic, reading, etc.

Here is what SATMentor has

Full Length Tests - 4 full-length tests with detailed review at the end of the test with explanations.

Test strategies: Verbal Practice - A detailed analysis of each section with hands-on strategies 

• Section tests in sentence completion
• Section tests in analogies
• Section tests in antonyms
• Section tests in reading comprehension

Test strategies: Quantitative Practice - A detailed analysis of each section with hands-on strategies, formulae, and tricks

• Section tests in quantitative abilities
• Section tests in data interpretation
• Section tests in quantitative comparison

SATMentor divides the whole course into three parts

1.  SAT Test preparation

You get assistance with Test Strategies: Test strategies to help you how to approach each section.
Section tests: 40 section tests for practice.

2.  Full Length Tests

Full-length tests
4 full-length tests with detailed review at the end of the test with explanations.

3.  Foundations

Foundations has PDFs on math and verbal sections. E.g., Algebra, geometry, probability, arithmetic, reading, etc.