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Onebrief

Active · Onebrief makes military headquarters run seamlessly

19signal of 100 · rising 4
  • team of 200Team size · YC's directory+11.9
  • went through YCProgram · this site+4
  • 2 programsMore than one program · this site+3

A sum of public facts, not a judgement and not investment advice.

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Also from S21

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Programs

Programs Onebrief went through
ProgramCohortSource
Y CombinatorS21YC Page
Alchemist AcceleratorClass 23Alchemist Page

About Onebrief

Virtually everything in the military requires a plan, from everyday operations to war-time missions. With a rigorous process, many stakeholders, and rudimentary software (PowerPoint!!), planning is very slow. Onebrief is a collaborative software designed to make military planning fast. It turns every input into reusable building blocks and automatically keeps all planning artifacts in sync.

YC batch
S21 · Summer 2021
Status, per YC
Active
Category
Other
Team size
200
Location
Honolulu, HI, USA; Remote
Checked
13h ago

YC tags: SaaS, GovTech, Defense

Changes seen

StageOct 26, 2026

Stage changed from Early to Growth.

StageOct 22, 2026

Stage changed from Growth to Early.

Onebrief in S21: 391 companies, 34% AI

Onebrief: questions

Which YC batch was Onebrief in?

Onebrief was in Y Combinator's Summer 2021 batch (S21).

Which accelerators did Onebrief go through?

Onebrief is listed by Y Combinator (S21), Alchemist Accelerator (Class 23).

Is Onebrief still active?

Y Combinator lists Onebrief as active.

Where is Onebrief based?

Onebrief lists Honolulu, HI, USA; Remote as its location on YC's directory.