In addition to installing the latest release (1.99.0), there are nightly builds and anyone can build Avogadro from source code.
-MacOS
+Most users will want to use the current official release (1.99.0).
+If you have problems using the current release or want to use the latest features, try out one of the “nightly” builds created every night from the current source code, which contains all improvements and bug fixes since the last release.
+We’re open-source, so if you would like to compile Avogadro yourself from the code, you can – see Building Source Code for more on how.
+Current Release (1.99.0)
Windows
+Nightly Build
++
macOS
++
Windows
+Linux
FreeBSD
++
FreeBSD
++
Source Code
+