Download C Tech software, updates, and tools. All downloads work with a valid license or in demonstration mode unless otherwise noted.
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Common C Tech Software Downloads
Earth Volumetric Studio 2026.1.2 — Full installer for the January 2026 release. Works with a valid license, or in demonstration and presentation mode. (752 MB)
Sample Projects — Hundreds of sample projects for the 2026.1 release. Required for demo mode. Explore real-world datasets with the full capabilities of the software. (939 MB)
C Tech 3D Scene Viewer — Standalone viewer for Windows. View CTWS files locally instead of using viewer.ctech.com. Updates automatically. (<100 MB)
C Tech Universal License Server — Version 2025.4. Manages Enterprise and Floating Licenses for EVS and EnterVol. (121 MB)
Additional Downloads
Licensing (License Server and Manager)
| File | Description | Type | Size |
|---|---|---|---|
| C Tech Universal License Server | License server (Version 2025.4) for managing EVS or EnterVol Enterprise and Floating Licenses. | .exe | 121 MB |
| C Tech License Manager | Standalone License Manager (Version 2025.4) for managing licenses without installing EVS. Also included in EVS and License Server installers. | .exe | 106 MB |
| Hardware Dongle Driver | Updates drivers for C Tech hardware dongles. Included in most installations — provided for diagnostic or system repair purposes only. | .exe | 2.44 MB |
Utility Programs (Scene Viewer, 3D PDF Converter, ...)
| File | Description | Type | Size |
|---|---|---|---|
| C Tech 3D Scene Viewer | Standalone 3D Scene Viewer for Windows. View CTWS files locally instead of using viewer.ctech.com. Also required for EVS to optimize CTWS files at creation time. Requires minimal permissions to install and updates itself automatically. | .exe | <100 MB |
| C Tech 3D PDF Converter | March 2024 release (2024.3) of the 3D PDF Converter. Requires a purchased license — does not run as a trial. | .exe | 144 MB |
| C Tech Video Codec Pack | Codecs for viewing animations created with HuffYUV, XviD, and Lagarith. Automatically included in standard EVS and MVS installations. | .exe | 851 KB |
Licensing and Maintenance Agreements
| File | Description | Type | Size |
|---|---|---|---|
| C Tech Software License | Terms and conditions (EULA) for licensing C Tech software. Must be acknowledged within all purchase orders. | 365 KB | |
| Enterprise License Staff Level Certification | Staff-level certification form for the Enterprise Licensing program. Must be signed and included with all Enterprise License subscriptions and renewals. | 387 KB | |
| University Certification | Certification form required for all University Initiative applications. | 73 KB | |
| Technical Support and Software Policy | Details the C Tech Technical Support and Software Policy, including coverage and limitations. | 378 KB |
Sample 3D PDF Output
Interactive 3D PDF files you can open in Adobe Reader to rotate, pan, and zoom.
| File | Description | Type | Size |
|---|---|---|---|
| Coastal Model from MVS | A contamination site along a coastal facility, generated within MVS. | 3.02 MB | |
| Railyard Model from EnterVol | Soil contamination under a rail yard, generated with EnterVol. | 7.81 MB | |
| Volcanic Lithology Model | An EnterVol Lithology model of volcanic geology. | 4.98 MB |
Third Party Case Studies
| File | Description | Type | Size |
|---|---|---|---|
| Enhanced 3-D Visualization as a Tool | Enhanced 3-D Visualization as a Powerful Data Analysis and Stakeholder Communication Tool During Mine Closure. Spurlin, Rogoff, Cichy, and Divine — Arcadis US, Inc. | 454 KB | |
| Characterization of DNAPL and Evaluation of Remediation Trenches | High Resolution TarGOST/CPT Characterization of DNAPL and Evaluation of Remediation Trenches using MVS. Battelle Eighth International Conference, Monterey, CA. Rogoff, Fisher, Shifano, and Thompson. | 6.39 MB | |
| Use of 3D Modelling for Environmental Site Assessment | By Reed Copsey. Originally published in Remediation Magazine. | 459 KB | |
| Kyeongju Earthquake Assessment | Site assessment and evaluation of spatial earthquake ground motion. Kim, Chung, Sun, and Bang. | 4.31 MB | |
| Data Visualization Tools for Litigation | Practical Uses and Ethical Considerations. Rogoff and Cross. | 5.20 MB |
Legacy Products (4DIM, EnterVol, MVS)
Standalone 4DIM Player
The 4D Interactive Model Player is a legacy product. These downloads allow viewing of 4DIM files without EVS.
| File | Description | Type | Size |
|---|---|---|---|
| Standalone 4DIM Player | March 2019 (2019.3.1) release of the Standalone 4D Interactive Model Player. | .exe | 84.2 MB |
| Sample 4DIM Files | Sample 4DIM files for the March 2019 release or later. | .exe | 28.2 MB |
| 4DIM Player — 32 bit | October 2015 (2015.10) release for 32-bit operating systems only. | .exe | 61.4 MB |
EnterVol for ArcGIS
EnterVol for ArcGIS is a legacy product. Existing users can download the latest release below.
| File | Description | Type | Size |
|---|---|---|---|
| EnterVol for ArcGIS 10.8.x | July 2022 release of EnterVol for ArcGIS, EnterVol GeoStats, EnterVol Geology, and EnterVol Tools for ArcGIS Desktop 10.8.x. Demo users can evaluate the software and upgrade to a licensed copy without reinstalling. | .exe | 107.6 MB |
| EnterVol Sample Data | Sample data including borings, lithology, stratigraphic surfaces, analytical data, and multiple model results. | .evp | 18.87 MB |
| EnterVol Printable Help | PDF of the entire EnterVol help system. Not required to run EnterVol. | 21.33 MB |
MVS 9.94
MVS is a deprecated legacy product. These downloads are provided for legacy support of existing customers only.
| File | Description | Type | Size |
|---|---|---|---|
| MVS Version 9.94 | August 2015 release. Provided for legacy support of existing customers only. | .exe | 117 MB |
| MVS Printable Help | PDF of the MVS help system. Not required to run MVS. | 39 MB |