Why Montaris-X?
If you annotate regions of interest on scientific images — brain sections, histology slides, fluorescence micrographs — you've probably used ImageJ, QuPath, or Napari. They're powerful tools, but none of them were designed specifically for ROI delineation workflows.
Montaris-X is.
The Problem with General-Purpose Tools
ImageJ / FIJI
- The ROI Manager is functional but clunky for managing dozens of ROIs
- No auto-save or crash recovery — lose hours of work to a single crash
- Brush tool lacks auto-overlap handling between layers
- No component-aware transform (can't move a single blob within a layer)
- Requires a Java runtime
QuPath
- Primarily designed for whole-slide pathology analysis, though it also supports fluorescence microscopy
- ROI drawing tools are limited — no stamp tool, no bucket fill with tolerance
- GPL license requires derivative works to also be open-sourced
- Project-based workflow adds overhead for simple delineation-only tasks
Napari
- Python-based n-dimensional viewer with built-in annotation support, but primarily a viewer
- Label editing tools (brush, fill, polygon) are functional but basic compared to a dedicated editor
- Designed for n-dimensional data; large 2D images need multiscale pyramids for smooth performance
- Advanced workflows often require assembling plugins
What Montaris-X Does Differently
Purpose-Built for Delineation
Every feature is designed for the workflow of drawing, refining, and managing ROIs on 2D scientific images. No plugins to install, no configuration — it works out of the box.
7 Specialized Drawing Tools
Brush with auto-overlap, Polygon with click-to-close, Stamp with configurable size, Bucket Fill with adjustable tolerance — all optimized for mask-based annotation.
Component-Aware Editing
Select and manipulate individual connected components within an ROI layer. Move a single blob without affecting the rest of the layer.
Robust Session Management
Auto-save, crash recovery, and session restore. Your work is protected without you having to think about it.
ImageJ Compatibility
Import and export .roi files and ZIP bundles. Drop into existing FIJI workflows without conversion.
Native Desktop Performance
No browser, no runtime dependencies to manage. A single executable that launches instantly and handles large images smoothly.
Feature Comparison
| Feature | Montaris-X | ImageJ/FIJI | QuPath | Napari |
|---|---|---|---|---|
| Purpose-built for ROI delineation | Yes | No | No | No |
| Brush with auto-overlap | Yes | No | No | No |
| Polygon tool | Yes | Yes | Yes | Yes |
| Stamp tool | Yes | No | No | No |
| Bucket fill with tolerance | Yes | Yes | No | No |
| Component-aware transform | Yes | No | No | No |
| Component-aware move | Yes | No | No | No |
| Multi-selection editing | Yes | Limited | Yes | No |
| Session auto-save & recovery | Yes | No | No | No |
| ImageJ .roi import/export | Yes | Native | Yes | Plugin |
| PNG mask import/export | Yes | Manual | Scripting | Yes |
| 16/32-bit TIFF support | Yes | Yes | Yes | Yes |
| Multi-channel composite | Yes | Yes | Yes | Yes |
| Image adjustments (B/C/Gamma) | Yes | Yes | Yes | Yes |
| No Java runtime required | Yes | No | Bundled | Yes |
| Single-file executable | Yes | No | No | No |
| Free & open source | MIT | Public domain / GPL | GPL | BSD |
Who Is Montaris-X For?
- Neuroscience researchers delineating brain regions on atlas sections
- Histology labs annotating tissue structures
- Microscopy core facilities that need a simple tool for collaborators
- Biomedical students learning to identify structures on micrographs
- Anyone who needs a focused, reliable ROI editor without the overhead of a general-purpose platform