| Test case design - | (Software Engineering) a set of techniques for deriving effective test cases |
| Test cases, derivation of - | (Software Engineering) the creation of data that can be used to uncover errors in the software |
| Testing - | (Software Engineering) a set of activities that attempt to find errors |
| Time-boxing - | (Software Engineering) a project scheduling and control technique that establishes time boundaries for the completion of a specific project task |
| Tools - | (Software Engineering) application software used to perform software engineering tasks (e.g., design tools, testing tools); see also CASE tools |
| UML (Unified Modeling Language) - | (Software Engineering) a comprehensive diagrammatic notation for the analysis and design of software |
| Usability - | An informal measure of the ease with which a user interface can be learned and applied with efficiency and without errors |
| Use-case - | (Software Engineering) a written description that defines a very specific interaction between a user and a system, often (but not always) written in the form of a usage scenario |
| User - | (Software Engineering) the person who actually used to software or the product that has software embedded within it |
| User hierarchy - | (Software Engineering) a hierarchical representation of the categories of users that will interact with any type of software |