Bug tracking tools help stake holders involved in software projects to detect bugs, resolve them and then ensure to have contingency and preventive measures so that detected bugs are not repeated in the future projects. The present generation of software developed, are enormous and extensive in size inorder to meet customer requirements and hence presence of bugs is impossible to avoid. Hence it is very important to know the functionalities and features of different bug trackers namely the open source ones so that compatible and relevant tools can be chosen efficiently for bug tracking purposes. The paper provides description of ten popular bug tracking tools and the major features of these tools are discussed in details yet concise manner. A comparative matrix is presented which helps to compare the tools, analyse them and find a tool which supports majority of the functionalities expected from an ideal bug tracking tool.