traditional command line interface to create, edit, and query Problem Reports TkGnatsA cross-platform application, written in the Tcl/Tk language Apart from these, custom ones can be developed such as OpenBSD's sendbug interface which collects system information and submits Problem Reports via email. See also Comparison of issue-tracking systems References External links Dan Kegel's GNATS-related links - many are broken but available via archive.org Free project management software GNU Project software