Grid computing is a process of aggregate the functionality of different geographically resources and provide services to the user. Scheduling is most popular research area in grid computing for achieving high performance. In scheduling, tasks are assigning to resources and maintain the execution. Dependencies constraints are need to preserve for workflow scheduling in grid computing. In this paper, surveyed various workflow scheduling algorithms. Lot of research has been done in the area workflow scheduling but still there is a requirement of optimization techniques like bat optimization, water drop optimization to the workflow scheduling.