Free DAWs/Applications/Utilities

VSTHost (Windows)
Standalone VST Host. Good for using VST's live without the overhead of running them through a DAW

SAVIHost (Windows)
Similar to VSTHost above, but only loads a single VST

Audacity (Mac/Windows/Linux)
Basic Audio Editor

PreSonus Studio One Free (Mac/Windows)
Digital Audio Workstation

Ardour (Mac/Linux)
Digital Audio Workstation

Rosegarden (Linux)
MIDI Composition and Sequencer

Zynewave Podium Free (Windows/Mac)
Digital Audio Workstation

VirtualDJ (Windows/Mac)
DJ Software

rtpMIDI (Windows)
Send and receive MIDI via WiFi

LMMS (Windows/Mac/Linux)
Digital Audio Workstation

MuLab (Windows/Mac)
Digital Audio Workstation

Tracktion Free (Windows/Mac/Linux)
Digital Audio Workstation

Aria Maestosa (Windows/Mac/Linux)
MIDI Editor/Sequencer

FREE DRUM SAMPLES