Appjet YC Application

Name: Round Funded
Price: 99.00 USD
Availability: InStock

Profile updated October 19, 2026Summer 2007Acquired

San Francisco, CA, USA

Appjet went through Y Combinator in the Summer 2007 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: Summer 2007
Industry: B2BEngineering, Product and Design
Location: San Francisco, CA, USA
Team size: 3
Status: Acquired
Launched: 2012

Founders

David GreenspanFounder

What Appjet does

Y Combinator funded AppJet is an online programming tool for building simple web apps. Founded by former MIT students, AppJet intends to simplify the process of writing web applications. The applications are programmed on a web based text editor in the simple but powerful JavaScript programming language. JavaScript is used on both the server and client side. They've included several bundles of code libraries for databases and more importantly interfacing with the Facebook API. In order to efficiently host users' applications, AppJet has developed their own application virtualization system. The system allocates processor time to active applications and cuts off greedy ones after running an alloted number of compiled lines of code to prevent abuse. AppJet as a dev platform seems no longer to be active. There are some legacy downloads available, however.

Appjet's YC application, reconstructed

Y Combinator application

Appjet, Summer 2007 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Appjet

Describe what your company does in 50 characters or less.

Web-based programming platform for building web apps

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

We built an online programming environment where users write web apps entirely in JavaScript, both client and server side. It includes libraries for databases and integrations like the Facebook API. To run user apps efficiently, we designed our own virtualization system that allocates processor time fairly and cuts off apps that consume too many resources.

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

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

Explain your decision regarding location.

We are already in San Francisco, where there is a strong developer community and access to resources that support our technical work and growth.

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 Appjet YC application?

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