bug is a simple tracking system for console users. It only depends on common Unix commands. Its database format is a text file containing simple tabbed columns which can be even hand-edited. It uses $EDITOR for submitting or editing the issues and for changing states or priorities. It relies on four fixed fields: ID, Priority, State, and Subject. There is also a fifth free-text field for any other information you may want to store about the issue. There is no database locking or notifications, so it's mostly for tracking the user's own issues.
Factory Nova is a project management program. It increases the effectiveness of your work and the happiness of your clients by making the workflow fully transparent to them. Factory Nova stores all the project information relative to each project, thus making it easily accessible from within a project. With Factory Nova, you can manage the tasks, discuss project ideas, create knowledge base articles, and work with the project's email (via POP3 email integration).
WebIssues is a multi-platform system for issue tracking and team collaboration. It can be used to store, share, and track issues with various attributes, description, comments, and file attachments. It is easy to install and use but has many capabilities and is highly customizable. Desktop and Web clients are provided.
AT-Project is an Eclipse plugin for change management of IT projects. It handles bugs, tasks, and changes according to the product structure and issues of a software development project. It helps to track code file changes related to project configuration items. The client-server version improves collaboration. Other features include user management, portfolios, and reporting.
Taskjitsu is a professional services automation system that tracks both tasks and time. This Web-based system records hours worked per task and project, accrues and tracks leave, provides management with productivity and billing reports, and gives customers status visibility on projects. Software developers and consultants can use this system to track bugs, feature requests, and support issues.
cspot is a semantic annotator designed only for the C programming language. It is quite similar to cscope, but some more functionality. It can be used to find the declarations, definitions, and usages of functions, variables, macros, typedefs, and structs. It can also find visible identifiers at some position in the source, functions called by a function, global variables used by a function, usages of local variable declarations, unused global variables, unused function definitions, and more. Because it uses sparse, cspot knows more about semantics than cscope.