Get Extended Matrix.
Two LTS lines run in parallel — the preferred line for new projects, and an outgoing LTS that stays supported so legacy projects can finish on their original combination of Blender + EM. The development line is where the next iteration is taking shape.
EM 1.5
Recommended for all new Extended Matrix projects — if you are unsure where to start, start here. Current Long-Term Support line, working on Blender 4.4 LTS or later (Mac Intel users included, via Blender 4.4/4.5 LTS). Headline: Representation Models management with advanced epoch visualization, Landscape mode, CronoFilter, Document Manager, Proxy Box Creator, and the first fully featured 3DSC.
Open the 1.5 page →EM 1.4
Outgoing Long-Term Support release — recommended only for legacy projects already authored against this version. New projects should start from EM 1.5 LTS. Pinned to Blender 4.5 LTS (the final LTS of the 4.x series), supported through end-of-life for in-flight projects, archive deposits and reproducibility of published work.
Open the 1.4 page →Look ahead at upcoming features on the EM development tracker.
Looking for an older release? See all versions →
Install in Blender
Drag a tool into the Blender window — Blender picks the build matching your OS and Blender version (4.4+) and keeps it updated automatically.
Connect an Extended Matrix graph to 3D content in Blender.
Drop it twice. The 1st drag adds the Extended Matrix repository, the 2nd installs it. Already added the repository? Once is enough.
No build for that combination — use the fallback below.
Can't drag & drop?
Add the repository in Edit ▸ Preferences ▸ Get Extensions ▸ Repositories ▸ ＋ ▸ Add Remote Repository, then install EM Tools from the list:
Tools for 3D survey: LOD, Cesium tiles, ortho & panorama.
Drop it twice. The 1st drag adds the Extended Matrix repository, the 2nd installs it. Already added the repository? Once is enough.
No build for that combination — use the fallback below.
Can't drag & drop?
Add the repository in Edit ▸ Preferences ▸ Get Extensions ▸ Repositories ▸ ＋ ▸ Add Remote Repository, then install 3D Survey Collection from the list:
Currently in the Dev channel (stable build coming soon).
Manual / offline install (advanced, no auto-updates): pick the zip for your OS & Blender version from the GitHub release — EM Tools ↗ · 3D Survey Collection ↗.
Individual tools
The framework is modular — each component has its own repository, docs and download page.
The EM palette adds the Extended Matrix typed nodes to yEd — the free graph editor used to author GraphML files. The starting point for anyone who wants to draw an EM by hand.
Project-level XLSX template that registers every bibliographic and archival source behind an EM project. Document nodes in the graph cite it via stable D.NN ids. Stable since EM 1.3, valid for EM 1.4/1.5; a revised two-sheet schema is in preparation for EM 1.6 (DP-58).
Connect an Extended Matrix graph to 3D content inside Blender. Browse stratigraphic units, link proxies, drive visualisation by epoch and property, export to Heriverse and CSV.
The computational core of the EM Framework. Reads, writes, validates and converts EM graphs (GraphML / JSON), enforces the data model, and powers every other tool in the framework.
Heritage Science Metaverse — the web-based publication endpoint of the framework. Opens any EM-aware scene in a browser with paradata pop-ups, epoch switching and collaborative VR.
3D Survey Collection — photogrammetry workflow management, level-of-detail handling, metadata propagation. The upstream pipeline that produces high-quality 3D models for EM Tools to annotate.
Companion to 3DSC that runs the photogrammetric processing inside Agisoft Metashape — chunk management, alignment, mesh generation, texture baking, ready for the LOD step in 3DSC for Blender.
QGIS plugin for archaeological data management with strong 2D GIS visualization of stratigraphic data. Connected to EM via s3Dgraphy as an auxiliary data source.
Web-based 3D viewer in the EMF. The reference web viewer for EM 1.4 (paired version 1.4). From EM 1.5 onwards the project moves toward Heriverse, but EMviq remains the right choice for EM 1.4 deposits and for any project that wants a lighter-weight, single-purpose viewer.