ProjectX YC Application

Spring 2026Active

ProjectX went through Y Combinator in the Spring 2026 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Spring 2026
Industry: B2BInfrastructure
Team size: 6
Status: Active
Launched: 2026

Founders

Rounak AdhikaryFounder
Bishal KarmakarFounder
Sourya MajumderFounder

What ProjectX does

Every computer ever made forces you to do one thing at a time. One cursor. One keyboard. One Hardware. One app in focus. Fifty years. Nobody questioned it. We did. We started over. We built InfinityOS, a fundamentally new computer OS on the cloud from ground up. Infinity runs every app in its own independent computer -- own GPU, own input, own environment. Windows and Linux in the same session. Humans and agents working side by side. No concurrency ceiling. Cold start in seconds. runs on the browser of any device..

ProjectX's YC application, reconstructed

Y Combinator application

ProjectX, Spring 2026 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

ProjectX

Describe what your company does in 50 characters or less.

Infinity: OS where humans and agents work with no limits.

What is your company going to make? Please describe your product and what it does or will do.

We built InfinityOS, a cloud-native operating system that runs each app in its own independent virtual computer with dedicated GPU, input, and environment. This lets humans and AI agents work together seamlessly, running Windows and Linux apps side-by-side in a browser, with no concurrency limits and near-instant cold starts.

Where do you live now, and where would the company be based after YC?

We live in San Francisco, CA, and plan to keep the company based here after YC.

Explain your decision regarding location.

San Francisco is where we live and where the startup infrastructure and cloud engineering talent we need are concentrated. It lets us be close to partners and customers in the cloud and AI space.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real ProjectX YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from ProjectX's public data (launch notes, founder backgrounds, product description). It shows how a company like ProjectX would present itself to YC, not the text they submitted.