Abstract-Web Engineering has been enriched with processes and modeling languages that focus on the specific features of web-based systems, taking into account the special requirements and constraints that are associated with this specific context. Process Patterns, on the other hand, represent elements of knowledge and experience in software engineering; they also act as reusable method chunks that can be used for constructing bespoke methodologies that are tailored to fit specific project situations. We propose a set of process patterns based on current web development practices. A number of prominent web development methodologies have been studied, and a set of process patterns has been elicited through abstracting their commonalities and identifying the essential activities required in a web engineering endeavor. Furthermore, a web-based systems development framework has been proposed that organizes these patterns into a generic lifecycle. The process patterns can be instantiated and assembled into a high-level development process based on the generic framework proposed