Skip to content
g-flite: flite app distributed over Golem Network
Branch: master
Clone or download
Latest commit ecf5832 Jun 14, 2019


g-flite is a command-line utility which lets you run flite text-to-speech app on Golem Network.

g_flite GIF demo

Note that g-flite currently requires that you have Golem instance running on the same machine and only testnet is currently supported due to the fact that our WASM platform is only available on the testnet.


You can grab a precompiled version of the program for each OS, Linux, Mac, and Win, from here.

Building from source

If you wish however, you can also build the program from source. To do this, you'll first need to clone the repo. Note that the actual WASM binary of the flite app is stored using Git-LFS so you need to take extra care when cloning the repo

$ git clone --depth 50
$ cd g-flite
$ git lfs install
$ git lfs pull

Afterwards, you need to ensure you have Rust installed in version at least 1.34.0. A good place to get your hands on the latest Rust is rustup website.

With Rust installed on your OS, you then need to simply run from within g-flite dir

$ cargo build

for debug version, or

$ cargo build --release

for release version. Your program can then be found in


for debug version, or


for release version.


Typical usage should not differ much or at all from how you would use the original flite app

$ g_flite some_text_input.txt some_speech_output.wav

Note that it is required to specify the name of the output file. All of this assumes that you have your Golem installed using the default settings

Setting Default value
datadir $APP_DATA_DIR/golem/default
RPC address
RPC port 61000

$APP_DATA_DIR is platform specific:

  • on Linux will usually refer to $HOME/.local/share/<project_path>
  • on Mac will usually refer to $HOME/Library/Application Support/<project_path>
  • on Windows will usually refer to {FOLDERID_LocalAppData}/<project_path>/data

If any of the above information is not correct for your Golem configuration, you can adjust them directly in the command-line as follows

$ g_flite --address --port 61000 --datadir /abs/path/to/golem/datadir some_text_input.txt some_speech_output.wav

Finally, by default g-flite will split your input text into 6 subtasks and compute them on Golem Network. You can also adjust this option in the command-line as follows

$ g_flite --subtasks 2 some_text_input.txt some_speech_output.wav

All of this information can also be extracted from the command-line with the -h or --help flags

$ g_flite -h

g_flite 0.1.0
Golem RnD Team <>
flite, a text-to-speech program, distributed over Golem network


    -h, --help       Prints help information
    -V, --version    Prints version information
    -v, --verbose    Turns verbose logging on

        --address <ADDRESS>    Sets RPC address to Golem instance
        --datadir <DATADIR>    Sets path to Golem datadir
        --port <PORT>          Sets RPC port to Golem instance
        --subtasks <NUM>       Sets number of Golem subtasks

    <TEXTFILE>    Input text file
    <WAVFILE>     Output WAV file


This program is still very much a work-in-progress, so if you find (and you most likely will) any bugs, please submit them in our issue tracker.


Licensed under GNU General Public License v3.0 with the exception of flite WASM binary which is licensed under BSD-like License.

You can’t perform that action at this time.