FluidSynth Icon


A real-time SoundFont software synthesizer

As of 2017-07-03, this project may now be found at https://www.github.com/FluidSynth/fluidsynth.

4.2 Stars (8)
321 Downloads (This Week)
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A real-time software synthesizer based on the SoundFont 2 specifications. It can be used for live audio synthesis of MIDI events or for rendering MIDI files to disk, using SoundFont instruments. It can also be embedded in other applications.

This is not a application with a graphical user interface, however there are several GUI applications which utilize FluidSynth.

FluidSynth Web Site


  • Live playing: play on your MIDI keyboard and hear the results
  • Play back MIDI files (or render to disk)
  • Embeddable library: use as a renderer in your own application


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User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
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User Reviews

  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    FluidSynth has become my favorite Software SoundFont synth being GPL. I just used it to build my Android Soundfont midi player with fast soundfont switching. Didn't modified the sources in this release. Android app is available as SoundFont-Midi-Player by GamesGreh.

    Posted 05/23/2016
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Thanks for updates ;)

    Posted 05/14/2013
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    FluidSynth is one of the key components of my Linux music setup -- flexible powerful, straightforward. Love it. My only significant problem with the program is that I haven't been able, so far, to get it to behave properly with my EWI USB wind controller. No matter how the controller is configured, the response to breath pressure is unpredictable and uncontrollable -- makes the EWI unplayable with FS. I notice that there was a patch for this submitted a couple of years ago, but that it doesn't seem to have been incorporated into the code by the FS developers. I'm willing to try to patch it myself, but. . . much code has changed since the patch was produced and so has the build system (and I've never used Cmake). I'd like to know if anyone has applied the EWI patch to the latest code, and how it worked out. Also, for the project admins: Did you find pebbleroller's patch problematic for some reason, or is it just a matter of project priorities? The algorithm in his/her patch looks like the right approach to channel pressure for the EWI, to me, although I'm not enough of an expert to be certain. Anyway, notwithstanding the above, FluidSynth is a great program! I think almost all Linux musicians agree,

    Posted 01/07/2013
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    how do you run this?

    Posted 11/21/2011
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    good job

    Posted 07/11/2011
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Additional Project Details



Intended Audience

Advanced End Users, Developers

User Interface

Non-interactive (Daemon), Console/Terminal

Programming Language




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