A molecular modeling workflow can stall for a surprisingly small reason: the file you need to read has no suitable importer, the editing operation you want is cumbersome, or the analysis tool you rely on lives outside your main environment. The result is often a patchwork of separate tools and repeated handoffs.
SAMSON addresses this kind of friction through Extensions: modules that add capabilities to the platform. Rather than treating every missing feature as a reason to change your whole workflow, it helps to identify the specific task that is slowing you down and look for an extension suited to it.

Start with the task, not the tool name
Describe the bottleneck in practical terms. Are you trying to bring a particular kind of data into a document? Apply a specialized visual representation? Edit a structure in a more controlled way? Run a calculation or simulation? This description points toward the extension family most likely to help:
- Importers parse files into SAMSON, such as PDB files or electron-density data.
- Exporters write document content to files, for example in PDB or XYZ formats.
- Editors provide tools for interacting with documents. Examples include selection, creating nanotube models, deforming structures while preserving local rigidity, and applying rigid-body transformations.
- Visual models change how data appears in the viewport, with examples such as protein secondary structures, electron-density isosurfaces, and volume rendering of electrostatics fields.
- Interaction models compute energies and forces for modeling and simulation tasks. Examples include spring, elastic network, and extended Hückel models.
- State updaters advance simulation states using methods such as minimization, Monte Carlo, or molecular dynamics algorithms.
- Apps can provide a broader range of functionality, including connections to external executables or web services, or integration of existing code.
This distinction is useful because “I need a new tool” can mean several different things. If a file will not load, an editor is probably not the right category to investigate. If the data is already present but hard to interpret visually, a visual model may be more relevant than an importer.
Find and add only what addresses the bottleneck
SAMSON downloads a set of Extensions included by default the first time it starts. If you need additional functionality, sign in to your SAMSON Connect account and browse the Marketplace to choose extensions. Once an app is installed, you can start it from Home > Apps or search for it using the Find everything box. Editors are available from the left-side menu of the viewport.
A simple way to assess a candidate is to connect it to one concrete step in your workflow: what input does the step need, what action do you expect to perform, and what result should it produce? This keeps the search focused and makes it easier to tell whether an extension addresses the actual source of friction. SAMSON Extensions can also include other components, such as workspaces, commands, selectors, visual presets, and interactive tutorials.
When no existing extension fits
If the needed capability is not available in the Marketplace, SAMSON can also be extended through the SAMSON SDK. Developers can create apps, editors, force fields, services, and other extensions. The SDK provides code templates and supports integrating existing code, while SAMSON handles areas such as visualization and data management. For workflows that need automation but not a compiled extension, scripting is another option to explore.
Extensions can also be distributed through SAMSON Connect. Developers may offer them for free or sell subscriptions, including access to cloud computing services. Subscription tiers can be configured for different audiences, such as industry and academia.
The practical takeaway: isolate the step that costs you time, identify whether it involves importing, editing, visualizing, modeling, simulation, or automation, and then look for the matching kind of extension. That small bit of diagnosis can make a complex tool landscape easier to navigate.
Learn more about extending SAMSON.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. Get SAMSON.
