Ozibug is a platform-independent, Web-based bug tracking system that can be installed and run straight out of the box on any Java servlet capable platform. It can be used to manage the reporting of bugs and tracking of their progress from discovery through to resolution. It provides standard features such as file attachments, multiple module support, email notifications, custom reports, and RSS feeds. For those who require more flexibility, it also offers fine grained access control, database storage, pluggable authentication, an incoming mail gateway, and customizable appearance, email notifications, and reference data.
Streber is a wiki-based project management tool. Freelancers and small teams can easily use it to set up projects and keep track of tasks, milestones, issues, bugs, efforts, etc. Project user rights can be adjusted (e.g., to provide clients a limited view of the current project state).
Yoxel SW is an adaptive project management solution allowing you to maintain a continuous feedback loop with your customers while collaboratively planning and implementing development iterations. It includes a request/bug tracker, release manager, customer portal, and knowledge/Q&A/FAQ management system.
Savane is a Web-based Free Software hosting system, originally based on SourceForge 2.0. It currently includes issue tracking, project and member management, mailing lists, and individual account maintenance. The issue tracking handles bugs, tasks, and support. The issue tracker's fields ware configurable in many ways: mandatory of not, shown to users according to their role in a group, and with transition management.
Anthill is a bug tracking database system written in PHP. It provides the standard bug tracking features such as: user logins, summary reports, submitting bugs, querying bugs, various severity and status levels. It also provides some unique features, such as a template system, and multi-lingual support.
XPTracker is a radical alternative agile planning tool aimed at keeping out of your way and making sure you can see the stuff you care about at a glance. Included in this tool is a very advanced search system based on Lucene, an easy-to-use planning system based on Queues, and a customizable reporting engine (with burndown/scope creep charts) called Timelines.
Fossil is a distributed software configuration management/version control system built with reliability and ease of use on mind. It comes with integrated bug tracking and a wiki. It is distributed as a single static binary for easy installation and the ability to run in a chrooted environment. Other highlights include a Web interface, autosync, simple networking, and CGI support.
DBG is a PHP debugger and profiler. It makes it much easier to discover the origins of problems and bugs in PHP scripts. It's equipped with the ability to backtrace errors. It shows local and global variables as well as parameters which have been passed to all nested function calls at any point of execution. Among other things, it allows you to execute scripts in a step-by-step manner, set breakpoints (including conditional ones), evaluate expressions, and watch variables. The profiler allows you to find bottlenecks in PHP code at the functions level as well as the modules level and even the source lines level.