Internet Protocol bandwidth measuring tool

iperf

Internet Protocol bandwidth measuring tool

Iperf is a modern alternative for measuring TCP and UDP bandwidth performance, allowing the tuning of various parameters and characteristics.
Magnatune Store

rhythmbox

music player and organizer for GNOME

Rhythmbox is a very easy to use music playing and management program which supports a wide range of audio formats (including mp3 and ogg). Originally inspired by Apple's iTunes, the current version also supports Internet Radio, iPod integration and generic portable audio player support, Audio CD burning, Audio CD playback, music sharing, and Podcasts.
Look up travel information for different rail providers

railway-gtk

Look up travel information for different rail providers

Railway allows one to search for journeys, view the details of a journey including departure, arrivals, delays, platforms. A lot of individual providers are supported: DB, Irish Rail, OEBB, BART...
Changing the governor and minimum allowed frequency of CPU0

cpupower-gui

GUI utility to change the CPU frequency

This utility can change the operating frequency of the CPU for each core separately. Additionally, the cpu governor can be changed. The program can detect offline cores and only present the available ones. Furthermore, if a core doesn't support frequency scaling is not shown. There is also an option to apply the same settings to all cores simultaneously. To apply the settings, the user must be local and active, as well as in group sudo. Local and active users not in this group must authenticate themselves as admin in order to apply the settings.
Multiplayer infinite-world block sandbox

luanti

Multiplayer infinite-world block sandbox

Luanti is a Minecraft-inspired game written from scratch and licensed under the LGPL (version 2.1 or later). It supports both survival and creative modes along with multiplayer support, dynamic lighting, and an "infinite" map generator.
system call fuzz tester

trinity

system call fuzz tester

As 'fuzz testing' suggests, trinity calls syscalls at random, with random arguments. Where Trinity differs is that the arguments it passes are not purely random.