pretrace is a preload library that allows specified (dynamically linked) applications to always be executed under a debugging environment. pretrace allows you to specify the percentage of invocations which will be traced, to help you "keep an eye" on applications without bringing the machine to its knees.
Defaults Manager is an editor for the User Defaults preferences database on Mac OS X. It allows you to easily view, edit, delete, and backup preferences, and can be used to view and change the preferences in almost any application. It is useful for developers that want to make sure their preferences are being stored and changed correctly, and can be used to unlock features that previously required the use of Terminal.
gscanbus is a little tool for testing and visualising the firewire IEEE-1394 bus. Using the Linux ieee1394 subsystem, it displays a graphical tree of all connected firewire devices and allows basic control of camcorders and other devices. It is designed as development and debugging tool and can be used for testing the basic firewire setup of a Linux machine.
Multixterm creates multiple xterms that can be driven together or separately. It can be used to login via SSH to multiple hosts and control them simultaneously, or for ad hoc things where you want to see the results as you type. Each xterm may also be driven separately. Multixterm is scriptable so that you can easily fire up, for example, a dozen xterms with a single command, tiled nicely on your screen. In addition to SSH, multixterm can drive rlogin, telnet, passwd, or any program that runs in an xterm.
Zaval Database Front-end is a light and functional Web-based front-end to any database for which you have JDBC drivers. It allows raw SQL code execution and is limited only by the extent of the database's SQL support. It supports multiple query execution, alternate languages, and more.