Hydrogen Alternatives, Similar

Hydrogen is an advanced drum machine for GNU/Linux. It's main goal is to bring professional yet simple and intuitive pattern-based drum programming.Features:
– General
— Very user-friendly, modular, fast and intuitive graphical interface based on QT 4.
— Sample-based stereo audio engine, with import of sound samples in .wav, .au and .aiff formats.
— Support of samples in compressed FLAC file.- Sequencer and mixer More Info »– Pattern-based sequencer, with unlimited number of patterns and ability to chain patterns into a song.
— Up to 192 ticks per pattern with individual level per event and variable pattern length.
— Unlimited instrument tracks with volume, mute, solo, pan capabilities.
— Multi layer support for instruments (up to 16 samples for each instrument).
— Sample Editor, with basic cut and loop functions. (NEW)
— Time-stretch and pitch functions via rubberband cli. Require the rubberband-cli package. (NEW)
— Play-lists with scripting function. (NEW)
— Advanced tab-tempo. (NEW)
— Director Window with a visual metronome and song position tags. (NEW)
— Time-line with variable tempo. (NEW)
— Single and stacked pattern mode. (NEW)
— Export/Import single patterns into song projects. (NEW)
— Midi learning via Shift+MouseClick on many gui-cotrollers combined with a midi settings editor. (NEW)
— Ability to import/export song files.
— Unique human velocity, human time, pitch and swing functions.
— Multiple patterns playing at once.- Other
— JACK, ALSA, PortAudio and OSS audio drivers.
— ALSA MIDI and PortMidi input with assignable midi-in channel (1..16, ALL).
— Import/export of drumkits.
— Export song to wav, aiff, flac or ogg file.
— Export song to midi file.