TuxGuitar - Open Source Tablature Editor

TuxGuitar, an open source tablature editor, is an music composer and player. The editor can be used to compose music using score and could be played back as midi file. The editor has multitrack display for different instruments, fret board view and matrix editor for percussion instruments. The editor has autoscroll feature for simulaneous playback. [...]

Metronome Online

Metronome is a device used to produce audible beats at regular intervals usually used to produce a steady tempo measured in beats-per-minute (BPM). Its an invaluable tool for musicians during the music creation process.
The good folks at eMusicInstitute have created an online version of metronome, Metronome Online,  which provides a dead simple and useful interface. [...]

Frets On Fire: Open Source Guitar Hero

Frets on Fire is a music video game in which users use the keyboard to play along with scrolling on-screen musical notes to complete a song. The game is developed by Unreal Voodoo and is a clone of the popular Guitar Hero console game.
The game features a unique inverted keyboard which emulates a guitar, with [...]

Hydrogen: Drum Machine

Hydrogen is an advanced drum machine for GNU/Linux and available on Linux/Windows/Mac. The main goal is to bring professional yet simple and intuitive pattern-based drum programming.
The drum machine features a pattern sequencer with unlimited patterns and ability to chain patterns. Capable of handling upto 64 ticks per pattern and 32 instruments with multi layer support. [...]