A breakdown of the 40 companies running GRASS GIS.
Top industries
Construction and building11
Information technology and services7
Education and training6
Government and public services4
Professional and business services4
Industrial and manufacturing3
Media and telecommunications2
Agriculture, forestry and fishing1
No industry recorded: 1
Company size
1–102 (6%)
11–504 (12%)
51–2506 (19%)
251–5003 (9%)
501–1,0001 (3%)
1,001–5,0005 (16%)
5,001–10,0003 (9%)
10,001+8 (25%)
Share of companies with a recorded size, by employees.
No size recorded: 8
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Frequently asked questions
About the GRASS GIS data on this page.
How many companies use GRASS GIS?
Firmable holds confirmed GRASS GIS detections for 40 distinct companies, 9 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use GRASS GIS?
McMillen, Primoris Services Corporation and Towson University are among the most prominent in the current set.
What industries use GRASS GIS?
Construction and building, information technology and services and education and training lead the set, across 10 industries in total.
What size companies use GRASS GIS?
Adoption concentrates in the 10,001+ employee band, across the companies whose size is recorded.
Where are GRASS GIS users based?
The United States, Canada, Indonesia and Singapore account for most detections, across 13 countries.
How current is this data?
9 companies were confirmed in the last 90 days. Last detection 20 September 2026.
