No fault detection technique is capable of finding all classes of fault in software, so we have to use variety of techniques that will help us to ensure that a variety of faults are found, resulting in more effective testing. As we know dynamic testing can only be applied to code; using static techniques becomes imperative to ensure V&V process is more efficient and effective. Before using any technique we should have profound knowledge of that technique. In this paper, we present an in-depth review of all static testing techniques. The goal of this paper is to look at the technical aspects of static techniques and to highlight their importance in STLC.