It's an Electron app so the source code comes with the package. They've also tweeted "We have a plan release it for Linux with the first stable version" [0] and

It's an Electron app so the source code comes with the package. They've also tweeted "We have a plan release it for Linux with the first stable version" [0] and that a proper source code release is planned. [1] Haven't tried it myself. [0] https://twitter.com/GetPublii/status/878563554118561792 https://twitter.com/GetPublii/status/878563554118561792 [1] https://twitter.com/GetPublii/status/871670397145665537 https://twitter.com/GetPublii/status/871670397145665537