A browser-based alternative to desktop auto-samplers (no install)
Desktop auto-sampler software does two things: it plays an instrument note by note and records it, then maps the result into a playable multisample. That recording step is useful if you're capturing a synth or hardware from scratch — but most of those tools are paid installs, usually Windows or Mac only. If you already have your recordings as WAV files, you don't need the recording part at all — you need a tool that maps, loops and exports them. Xampler does that in the browser, nothing to install, and exports to SFZ, SF2 and Korg KMP/KSF.
- 1Replaces: the mapping, looping and export — turning your WAVs into a playable instrument.
- 2Does NOT replace: auto-playing and recording a synth from scratch (the recorder side of desktop auto-samplers).
- 3Runs in any browser — Windows, Mac, Linux, Chromebook — no install.
- 4Exports SFZ, SF2 and Korg KMP/KSF.
01Is there a free alternative to a paid auto-sampler?
Is there a free alternative to a paid auto-sampler?
It depends what you need it for. An auto-sampler does two things: it auto-plays and records an instrument, then maps the result. If you already have WAV recordings, you only need the second part — mapping, looping and exporting — and Xampler does that in the browser. If you specifically need to drive and record a hardware or VST instrument automatically, that recording side is what the paid desktop tools add and Xampler doesn't.
02What does a desktop auto-sampler do that I might not need?
What does a desktop auto-sampler do that I might not need?
It automates the recording: it sends MIDI notes to an instrument, records each one, and detects loops. That's valuable if you're sampling a synth or hardware from scratch. But many people already have the WAVs — a recording session, a sample pack, exported notes — and just need them turned into a playable instrument, which Xampler handles without any install.
03Can I make a Korg KMP without buying a desktop auto-sampler?
Can I make a Korg KMP without buying a desktop auto-sampler?
Yes. People often buy a paid tool specifically to get a KMP for their Kronos, but if you have the WAVs, Xampler builds the KMP/KSF set (key map, loops, tuning) in the browser. You only need a paid auto-sampler if you still have to record the instrument first.
04Does it run on Mac, or without Windows?
Does it run on Mac, or without Windows?
Xampler runs in any modern browser, so Mac, Windows, Linux or Chromebook all work the same — there's no platform-specific install. Desktop auto-samplers are often Windows-first, which is a common frustration for Mac users; the browser sidesteps it.
05What other ways are there to do this?
What other ways are there to do this?
Besides browser tools, there are desktop converters that map WAVs into SFZ/SF2, SoundFont editors like Polyphone or Awave Studio for building and tweaking the format by hand, and paid auto-samplers that also record the instrument. They differ in platform, price, and whether they record or just map. Xampler's niche is browser-based, no-install mapping, looping and export with pitch detected from the audio.
06If I don't have a way to record, can Xampler still help?
If I don't have a way to record, can Xampler still help?
Xampler doesn't record an instrument for you — it works from WAV files you already have. To capture a hardware synth you'd record it first (in any DAW), then bring the WAVs into Xampler to map, loop and export. For sources you can already export as audio, no recording tool is needed at all.
07Is the browser version really enough for a usable instrument?
Is the browser version really enough for a usable instrument?
Yes — for the core job of turning recordings into a mapped, looped, exportable instrument, the browser version covers it: pitch detection, key mapping, loop finding, and export to SFZ/SF2/Korg KMP. The paid desktop auto-samplers add the recording automation, which you don't need if you already have the audio.