Whitespace.
See who already built your idea — and the space they left open.

CLUSTER MUSIC-SEQUENCER-COMPOSING · 15 ENTRIES · EARLIEST ENTRY 2008-03-08

Music sequencer and tracker apps

This cluster comprises music sequencers and trackers for composing, editing, and arranging music across desktop and mobile, including collaborative and procedural MIDI tools. Dated entries begin with a single product in 2008-03, then a long gap until 2019-10, followed by sporadic single entries in 2021, 2022, 2023, a pair in 2024-02, and three in 2025 before one in 2026-05. Traction leaders, all at 0 stars, are PocketTracker, sanic, and Pagan.

Entry timeline

ENTRY TIMELINE

MAR 2008: 1MAY 2013: 1OCT 2019: 1MAR 2021: 1FEB 2022: 1JUL 2023: 1FEB 2024: 2AUG 2025: 1OCT 2025: 1FEB 2026: 1MAY 2026: 1AUG 2026: 2NOV 2026: 1
MAR 2008NOV 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 2 hand-coded · 13 unlabelled

Operator · 14 open source · 1 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 15 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01Helio0★todayliveopen sourceLightweight cross-platform music sequencer application offering a simple interface for composing and arranging musical ideas.
  2. 02PocketTracker0★1 moliveopen sourceMusic tracker app for handhelds and phones with eight-track sequencing, samplers, and soundfont support for creating electronic music.
  3. 03sanic0★1 moliveopen sourceMusic control application that allows users to create chaotic playback sequences.
  4. 04Pagan0★20 dayslivehand-codedopen sourceMobile music sequencer that uses a compact notation for jotting melodies, supports polyrhythms, MIDI devices, and soundfont imports.
  5. 05kirastudio-bin0★3 moliveopen sourceCross-platform music studio for composing, arranging, and producing music with automated workflows.
  6. 06radium0★4 moliveopen sourceA graphical music editor for creating and arranging electronic music through tracker patterns.
  7. 07qmidigen0★4 moliveopen sourceProcedural MIDI generator that creates JRPG-style music compositions.
  8. 08pxtone collab0★8 mostaleliveopen sourceA collaborative music sequencer that lets multiple users edit the same sample-based song together in real time over a network, with MIDI input support.
  9. 09helio-workstation-bin0★7 mostaleliveopen sourceMusic sequencer that lets users compose, edit, and arrange music tracks on desktop and mobile.
  10. 10helio-workstation0★10 mostaleliveopen sourceMusic sequencer that lets users create, edit, and arrange music tracks on desktop and mobile.
  11. 11Helio0★24 daysliveopen sourceA cross-platform music sequencer for creating and arranging music tracks on multiple devices.
  12. 12laborejo0★11 mostaleliveopen sourceMIDI sequencer for composing music using classical music notation.
  13. 13ossia score0★1 yrabandonedliveopen sourceDesktop sequencer for audio-visual media that enables interactive shows and installations.
  14. 14ChibiTracker0★16 yrabandonedlivehand-codedopen sourcePortable desktop application for composing music using a tracker-style sequencer, with sample editing, chorus, and reverb effects.
  15. 15Step Sequencer0★unknownliveOnline MIDI step sequencer that lets users arrange notes on a grid to compose and play electronic music patterns.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.