Download the correct Red binary version for your computer from here (takes only a few seconds, it's less than 1MB). Save into a suitable folder.
For Windows users: Run it by double-clicking on the Red binary file.
It will then automatically build the Red GUI-console.
Next time you double-click on the file, the GUI-console will automatically open.
For Linux/OSX users: You need to open a terminal app to be able to run Red.
Once you have opened the terminal app, change to the directory in which you saved Red.
Now do a: chmod u+x
After that, run Red using ./
Next time you run Red, the console will automatically open.
(*) For Linux 64-bit distros, you need to install 32-bit supporting libraries. So, for Debian-based distros, install them using:
sudo apt-get install ia32-libs libc6-i386 libcurl3
If you are using a Debian 7+ or Ubuntu 13.10+ version, you should use the multiarch way:
dpkg --add-architecture i386 apt-get update apt-get install libc6:i386 libcurl3:i386
For Fedora/Redhat/Centos distros:
sudo yum install glibc.i686 sudo yum install libcurl.i686
For FreeBSD, no prebuilt binaries yet, you need to cross-compile, or get the Red sources, a Rebol interpreter (here) and a couple packages:
libcrypto.so.8, which can be found in the openssl package, and
libcurl.so.4 (temporary dependency):
pkg install openssl pkg install fpc-libcurl-3.0.2
For ArchLinux, there is a Red package there.
For step by step instructions on compiling your first script, please find them here.
choco install red