What they do:
Economically and environmentally sustainable supersonic travel
Quick facts:
HQ: Denver, CO, United States
Top Startups in Denver
This list has 27 startups and was last updated on Oct 15, 2026. 4 of them are hiring right now. Largest teams: Boom, Accept.inc (formerly BoardRE), and H3X Technologies. Latest round: E2ML Tarzana raised $6.49M (Oct 6, 2026).
27 startups
Quindar
Hiring
What they do:
Datadog for Space
Quick facts:
HQ: Denver, CO, United States
Albedo
Hiring
What they do:
Full-stack VLEO satellite missions
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HQ: Denver, CO, United States
What they do:
The lightest electric aircraft motors in the world.
Quick facts:
HQ: Denver, CO, United States
Blissway
Hiring
What they do:
The tolling industry’s prime tech infrastructure
Quick facts:
HQ: Denver, CO, United States
What they do:
Blood Test for Early Detection of Ovarian Cancer
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HQ: Denver, CO, United States
What they do:
The financial foundation for every real estate development decision
Quick facts:
HQ: Denver, CO, United States
Offstream
Hiring
What they do:
Vanta for carbon compliance
Quick facts:
HQ: Denver, CO, United States
What they do:
Unified Hardware Control and Data Processing Software
Quick facts:
HQ: Denver, CO, United States
What they do:
Zero-Knowledge security without seed phrases or backup codes
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HQ: Denver, CO, United States
What they do:
Reliable infrastructure to build, deploy and manage real-world robots.
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HQ: Denver, CO, United States
What they do:
Kill the drone, keep the jet. Reusable unmanned interceptors.
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HQ: Denver, CO, United States
What they do:
Realistic virtual video studio to record and stream from your browser
Quick facts:
HQ: Denver, CO, United States
What they do:
Let your camera understand the world
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HQ: Denver, CO, United States
Quick facts:
HQ: Denver, CO, United States
Incorporated: 2022
Funding:
$16.9M · Equity · Mar 2026
Quick facts:
HQ: Denver, CO, United States
Incorporated: 2024
Funding:
$14.9M · Equity · Mar 2026
Quick facts:
HQ: Denver, CO, United States
Funding:
$10.8M · Equity · Mar 2026
Quick facts:
HQ: Denver, CO, United States
Incorporated: 2021
Funding:
$8.77M · Equity · Jan 2026
Quick facts:
HQ: Denver, CO, United States
Incorporated: 2026
Funding:
$6.49M · Equity · Oct 2026
Quick facts:
HQ: Denver, CO, United States
Funding:
$4M · Debt · Feb 2026
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HQ: Denver, CO, United States
Funding:
$3.33M · Equity · Feb 2026
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HQ: Denver, CO, United States
Funding:
$2.5M · Equity · Apr 2026
Quick facts:
HQ: Denver, CO, United States
Funding:
$1.5M · Debt · Jan 2026
Accept.inc (formerly BoardRE)
Acquired
What they do:
BoardRE is a new type of mortgage company that upgrades any offer…
Quick facts:
HQ: Denver, CO, United States
Heimdal
Shut down
What they do:
Affordable and verified direct air carbon capture and storage
Quick facts:
HQ: Denver, CO, United States
Pursuit
Shut down
What they do:
Turnkey co-ownership & management of properties
Quick facts:
HQ: Denver, CO, United States
Rally Tennis
Shut down
What they do:
Join tennis league and play competitively with people nearby
Quick facts:
HQ: Denver, CO, United States
Questions and answers
How many startups are on this list?
There are 27 startups on this list, last updated on Oct 15, 2026.
Which of them are hiring?
4 of them are hiring right now, including Quindar, Albedo, and Blissway.
Which of them have the largest teams?
By team size: Boom (227 employees), Accept.inc (formerly BoardRE) (80 employees), and H3X Technologies (58 employees).
Which of them raised money recently?
Latest rounds: E2ML Tarzana — $6.49M Equity (Oct 2026), xMentium — $2.5M Equity (Apr 2026), and Lux Aeterna Space — $14.9M Equity (Mar 2026).