BKchem is a free chemical drawing program, which is written in Python.

KUser is an application for managing users and groups on your system.

ClusterSSH (cssh, crsh, ctel) allows you to control multiple ssh, rsh or telnet sessions from a single input window. You can also configure clusters of machines for easy invocation and interact with individual terminal windows during a session.

HDF is a versatile data model that can represent very complex data objects and a wide variety of metadata. It is a completely portable file format with no limit on the number or size of data objects in the collection.

Firejail is a SUID security sandbox program that reduces the risk of security breaches by restricting the running environment of untrusted applications using Linux namespaces and seccomp-bpf. It allows a process and all its descendants to have their own private view of the globally shared kernel resources, such as the network stack, process table, mount table.

IDLE is an Integrated Development Environment for Python.