Molecular Nodes

Molecular Nodes lists compatibility with Blender 5.1 and newer, so version 5.1 is supported. The 4.5.12 release notes state the add-on was updated for Blender 5.1 and Python 3.13, which points to that version being the current baseline. If you are running an older Blender release, the extension page does not list it as compatible, so you may need to update Blender. For the latest compatibility details and any version-specific notes, refer to the developer's page linked with this listing before installing.

Molecular Nodes provides download packages for Windows, macOS Apple Silicon and Linux, and each platform has its own build listed on the extension page. Those three are the supported platforms named in the listing. If you run a different setup, such as an Intel Mac, that configuration is not listed among the supported platforms, so you would need to confirm whether it works. For the current list of supported platforms and any hardware details, check the developer's page linked with this listing before downloading.

Molecular Nodes requests network permission to download structural data from the PDB and AFPDB, so an internet connection is used when you fetch structures from those databases. It also requests file permission to import data files from disk and to cache downloads. That means once data is available locally, working from those files relies on the file access permission rather than the network. If you plan to load structures directly from the online databases, you will need connectivity; local files can be used without it.

Molecular Nodes can be installed by dragging and dropping the downloaded package into Blender, or by downloading the file and installing it from disk through Blender's extensions preferences. The extension page provides separate packages for Windows, macOS Apple Silicon and Linux, so download the one that matches your platform before installing. Because the add-on requires Blender 5.1 or newer, make sure your Blender version meets that requirement first. For step-by-step guidance and troubleshooting, the documentation and the developer's page linked with this listing cover the process.

Molecular Nodes is released under the GNU General Public License v3.0 or later, which is an open-source license. In this catalog the add-on is listed as free, and no price is set here. Licensing terms can change over time, so for the current license text and any conditions that apply to your use, refer to the developer's page and the project's license file linked with this listing. That is the authoritative source for how you may use, modify and distribute the add-on.