Polyend Tracker Studio — free web-based pattern & instrument editor

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Hey everyone! I wanted to share a project I’ve been working on: Polyend Tracker Studio, a free, open-source web editor for the Polyend Tracker.
Try it live https://simoianni.github.io/polyend-tracker-studio/

WHAT IS IT?
A browser-based tool that lets you create, edit, and play Polyend Tracker patterns and instruments — no hardware needed. It runs entirely in your browser (Chrome or Edge recommended for Web MIDI + Web Audio). Nothing gets uploaded anywhere: your samples and instruments stay on your machine, and work-in-progress is auto-saved locally so it survives page reloads.

WHAT CAN IT DO?
Pattern Editor:

  • Full step sequencer with Note, Instrument, FX1, and FX2 lanes
  • Live playback with adjustable BPM
  • Record mode: input notes directly from your QWERTY keyboard
  • Import original Tracker project folders (project.mt + patterns + instruments)
  • Export to .mtp (pattern), .mid (MIDI), or Ableton Live 12 project

Instrument Editor:

  • 8 playmodes: OneShot, Forward/Backward/Pingpong Loop, Slice, Beat Slice, Wavetable, Granular
  • Sample editor: Cut, Fade, Normalize, Compress, 3-band EQ
  • Sample recorder with MIDI-triggered auto-sampling
  • Full parameter control: Filter (LP/HP/BP), Tuning, Volume, Pan, Overdrive, Bitcrush, Delay/Reverb
  • 6 automation lanes (ADSR envelope + LFO) for Volume, Pan, Cutoff, Wavetable Pos, Granular Pos, Finetune
  • Waveform visualizer with zoom, drag-to-seek, and interactive slice markers
  • QWERTY keyboard note input + MIDI controller support
    Beat Slice mode: each slice is triggered by a different keyboard note — Z=slice1, S=slice2, X=slice3, D=slice4, etc. (standard tracker keyboard layout).

HOW TO USE
Just open Polyend Tracker Unified Editor and you’re good to go. There’s a built-in help guide (click the ? button) with all keyboard shortcuts.

CREDITS
This is a fork of the original Polyend Tracker Instrument Editor by Sandro “Sandroid” Ducceschi. Huge thanks to Sandro for the initial codebase and for creating and open-sourcing tracker-lib, the library that makes reading and writing .pti/.mtp/.mt files possible.

LINKS
Live app: Polyend Tracker Unified Editor
GitHub: GitHub - simoianni/polyend-tracker-studio: Web-based pattern & instrument editor for the Polyend Tracker — import and export full projects (SD-card ready), edit patterns/instruments, MIDI & Ableton export. Built on tracker-lib. · GitHub
tracker-lib: GitHub - polyend/tracker-lib: A library for reading and writing Polyend Tracker compatible project files. · GitHub

Let me know what you think! Feedback and contributions are welcome.

10 Likes
2

Wow, what a nice idea! Definitely going to try this out :slight_smile:

3

Having something like this is a real dream of mine, I absolutely love this idea and have some requests to really kick this up a notch to be a useful tool for polyend tracker. namely a bunch of keyboard shortcuts:

  • Shift and arrow keys to mark a selection
    • Cut/Copy/Paste data in that selection
    • then maybe Shift + U to un-select a selection?
  • Page Up/Down to move up and down by 16 rows. Home/End to jump to beginning or end of pattern. Also works with shift to select a region.
  • Ctrl + 1-8 to adjust step jump values (and a display showing what the current value is).
  • Keyboard should also ideally have two rows - one starting at Z like you have and another an octave up starting at Q. Very common in software trackers
  • Ideally some sort of pattern sequencer.
  • And this is a small nit pick but I’d remap Note/Ins/FX1/FX2 to be 7/8/9/0 or something else so it maps the muscle memory of tracker on the right side.
    • Same with play/stop, maybe as enter or right Shift.
    • Right command or option as play from currently selected row