These are the official download sources. For a list of unofficial sources, please visit the page unofficial sources.
The somewhat stable build of Spectral is available on Flathub.
flatpak install flathub org.eu.encom.spectral
Alternatively, you can fetch the latest Flatpak build here.
Or, you can download the AppImage here.
If you have issues with the fonts, please install Google Noto Fonts or Roboto, either from your distribution's repository or download directly.
pacman -S noto-fonts noto-fonts-emoji
apt install fonts-noto
There exist nightly builds from AppVeyor.
Spectral depends on OpenSSL 1.0.2. However, the OpenSSL libraries are not distributed by default due to U.S. cryptographic export restrictions. You need to install them manually from this website.
The .dmg app bundle is available here.
Please follow the instructions in compile page.