What's new in SAMSON 2025 R2#

We are pleased to announce that SAMSON 2025 R2 is out.

Progressive clipping#

SAMSON 2025 R2 features progressive clipping, a new way to automatically control visibility when visualizing structures:

The upcoming release of SAMSON introduces progressive clipping, and I love using it. I think it enhances clarity even further, and the smooth transitions give a great sense of where you are. pic.twitter.com/IfrW6bzpXX
— Stephane Redon (@StephaneRedon) May 23, 2025

New editors#

SAMSON 2025 R2 introduces two new editors for easier navigation:

the View editor (shortcut V) for only moving around (click to rotate the view),
the Point selection editor (shortcut P) for a balance between visualizing and editing.

These complement the Rectangle selection editor (shortcut R) which was previously available.

You will now be able to choose which of these three editors is active when you start SAMSON for the first time:

New editors: choose your default editor

Webinar: Introducing SAMSON 2025#

These new features will also be described in the upcoming webinar introducing SAMSON 2025.

In this webinar, you will learn in particular:

How to create and edit 2D and 3D protein-ligand interaction diagrams using the new Interaction Designer.
How to use the new Pattern Builders to rapidly create advanced designs.
How to use the updated Protein Aligner, now included by default in SAMSON, to align multiple sequences and structures of proteins.
How to use the new Quick Groups to store and control selections.
How to use the new colors schemes to rapidly create advanced visualizations.

Date: June 17, 2025. Time: 8am PST, 11am EST, 5pm CET. Register here !

SAMSON 2025 webinar

For developers#

The SAMSON API has been upgraded to expose the new functionalities of this release and let developers create extensions that they can distribute on SAMSON Connect. See the Developer Guide: Changelog.

Get SAMSON#

This is an overview, and SAMSON 2025 R2 also provides a variety of new features and fixes of reported issues. SAMSON 2025 R2 also incorporates updates in default extensions released after the previous release.

Already have SAMSON? Just restart it and you will be offered to update: follow the steps and your installation will be upgraded to the latest SAMSON.

Do not have SAMSON? Create your free account and download SAMSON. You'll be all set and ready to go within a few minutes.

Need Help?#

Have questions or feedback? Feel free to reach out via the Forum, via e-mail, via the Feedback button in SAMSON, or by directly discussing with us.