Any software development process or web application always has bugs, which is quite obvious in hundred lines of code. The essential part is tracking and fixing them. It does really gonna high time to use bug tracking software’s. Besides having the bugs listed in a comprehensive way, most of the bug issue tracking applications grants end-users to submit bug-feature requests that will end up in a better product. Here enlists the following best ever free and open source bug tracking software’s, both desktop and web based for a better development procedure:

1. eTraxis – It is a bug tracking software that works with MySQL, PostgreSQL, MSSQL and Oracle. Unlimited projects can be created with any number of users working on them. Users working on the project can easily see the bugs assigned to them or see the general status of the project. eTraxis can notify users with e-mails & has a reminder system. The software has Multilanguage support.
2. WebIssues – It is an open source issue tracking and team collaboration application that has 2 parts: one server and other client. The server is a PHP-MySQL based server where the data is stored and notifications are sent. On the other hand, the client is a desktop application for users to connect to the server (Windows & Linux supported). A permission-based user system enables the ability of “multiple users working on different projects”. Issue types are flexible & customizable. Issues can be easily filtered & reports can be created for a snapshot.
3. Bugzilla – This bug tracking system has been supported by Mozilla Foundation and grants individual or groups of developers to keep track of outstanding bugs in their product effectively. Considering Bugzilla, is used by Mozilla, Open Office, RedHat, NASA, Facebook & hundreds of other popular companies, it is a very mature & feature rich application. It can perfectly track bugs & code changes with time tracking and notifications. Teammates can communicate with each other & users of the product can become a part of the bug tracking system by submitting bugs.
4. Trac – It is an improvised wiki and issue tracking system for software development projects. It has an interface to Subversion (or other version control systems), an integrated Wiki and convenient reporting facilities. Also, it has a timeline which displays all current and past project events in order, for a better overview of the project. There is also a roadmap which shows the list of the upcoming milestones.
5. BugNet – It is an open source ASP.NET bug tracking tool. It takes care of email notifications, reporting and per project configuration of fields and values that allows efficient management of bugs, feature requests, and other issues for projects of any scale.
6. Mantis Bug Tracker – It is a web based free bug tracking system, written in PHP and works with MySQL, MS SQL, and PostgreSQL. It has a multi-level hierarchy: projects>sub-projects>categories>bugs where users can contribute to each item if they have the access rights. The application has powerful features like an integrated wiki, chat, RSS feeds, time tracking & much more.
7. The Bug Genie – It is an open source bug tracking system, used for improvising the development process by managing bug reports, feature requests and user feedback. It has been built with PHP, has Multilanguage support & provides an easy to use interface. It can be integrated with Subversion, displays roadmaps automatically & much more.
8. Eventum – It is an issue tracking system, built by the MySQL team. It helps in organizing tasks and bugs within a development project. It has various features from notifications to reminders & reports to RSS support.
9. Issue tracker by ASP.NET – This bug tracking system application lets you to create projects, projects members/permissions & issues to be assigned to members. Issues can be tracked, related issues can be displayed & more. It supports MS Access & MSSQL for storing the data.