Native Windows software for terrain modeling and CAD-GIS analysis: stream gigabyte DEMs, orthophotos and point clouds; compute cut/fill, cross-sections and stockpiles; design roads, benched slopes and blast patterns. Offline. Free for academics.
This page is designed to help you find out whether Stream Terrain is good and if it is the right choice for you.
STREAM turns large survey data into engineering deliverables, on your own Windows machine.
It opens gigabyte-scale digital elevation models (GeoTIFF), orthophotos and LAS/LAZ point clouds using out-of-core streaming, so you can pan, zoom and measure across an entire site without waiting for files to load. A Vulkan GPU renderer draws the terrain in 2D and 3D at full resolution.
What you can compute
Design modules
Formats — Import: GeoTIFF, LAS/LAZ, DXF. Export: DXF, CSV, GeoTIFF, Excel, PDF, KMZ.
Who it is for — surveying and geomatics engineers, drone operators, construction contractors, mining, quarry and earthworks teams, GIS/CAD specialists.
Runs offline; your data never leaves your machine. Six languages. Academic use is always free.
Listed in
Cut and fill volumes
Against real terrain, a flat design level or a reference surface, with a heat map and GeoTIFF export
Cross-section cubature
Station-by-station volume table with DXF section drawings
Stockpile volume and tonnage
Reference base and material density, exported as a print-ready PDF report
Design modules
Road corridors, benched slopes and blast patterns designed on your surveyed ground
STREAM opens gigabyte-scale DEMs, orthophotos and LAS/LAZ point clouds on an ordinary Windows machine by streaming only the visible tiles to a Vulkan GPU renderer, and then turns that survey data into engineering deliverables on the same surface: cut/fill and cross-section volumes, stockpile tonnage, contours, change detection between two surveys with a detection threshold, and road, benched-slope and blast-pattern design, exported to DXF, GeoTIFF, PDF and KMZ. Everything runs offline; nothing is uploaded.
Because the data never leaves your machine and file size is not the limit. STREAM is a desktop tool: no upload, no browser tab choking on a large cloud, and the whole site stays responsive because only the visible tiles are resident. Measurement and design happen on the same streamed surface, so a volume, a cross-section and a bench design all read the ground you actually surveyed. The numbers are honest by design: change detection reports a detection threshold instead of counting survey noise as movement, and nothing is filled in with a guess. Six interface languages; free during the public beta, and academic use is always free.
Surveying and geomatics engineers, mine and quarry surveyors and planners, drone and photogrammetry operators, earthworks and construction contractors, civil engineers, and GIS/CAD specialists who work with large drone or LiDAR surveys on Windows and need volumes, sections and designs they can hand to a client or auditor.
STREAM started from a field problem: drone surveys were getting bigger every season, desktop tools choked on them and cloud tools asked us to upload site data we could not share. So we built a terrain engine that streams the survey instead of loading it, then kept adding what the site actually needed next: volumes, cross-sections, stockpile reports, change detection, and finally road, slope and blast design on the same surface. It shipped as a free public beta in six languages, and it keeps growing from what mining, quarry and earthworks teams ask for.
A C++23 core engine with a Qt 6 desktop interface; a Vulkan GPU renderer (compute raycaster) that streams terrain tiles at several levels of detail; GDAL for GeoTIFF/BigTIFF rasters and PDAL for LAS/LAZ point clouds; a native tiled raster cache with ZSTD compression and overview levels for fast reopening; and signed licensing (Ed25519). Native Windows x64, fully offline.
We have collected here some useful links to help you find out if Stream Terrain is good.
Check the traffic stats of Stream Terrain on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
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