Private company

AppScale

Logo: AppScale Systems, Public domain, via Wikimedia Commons3

American cloud infrastructure software company

AppScale is a software company that offers cloud infrastructure software and services to enterprises, government agencies, contractors, and third-party service providers. The company commercially supports one software product, AppScale ATS, a managed hybrid cloud infrastructure software platform that emulates the core AWS APIs. In 2019, the company ended commercial support for its open-source serverless computing platform AppScale GTS, but AppScale GTS source code remains freely available to the open-source community.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

2009Founded1

AppScale is a software company that offers cloud infrastructure software and services to enterprises, government agencies, contractors, and third-party service providers. The company commercially supports one software product, AppScale ATS, a managed hybrid cloud infrastructure software platform that emulates the core AWS APIs. In 2019, the company ended commercial support for its open-source serverless computing platform AppScale GTS, but AppScale GTS source code remains freely available to the open-source community.2

The story

AppScale began as a research project at the University of California, Santa Barbara Computer Science Department under the supervision of Professor Chandra Krintz. The project was originally funded by the NSF, with additional funding from Google, IBM and NIH. In 2012, co-founders Dr. Chandra Krintz, Chief Scientist, Dr. Navraj Chohan, Development Lead, Dr. Chris Bunch, Development Lead, and Woody Rollins, CEO founded AppScale Systems to commercialize the private PaaS AppScale technology. Rollins, a pioneer in private cloud infrastructure, was a co-founder and former CEO of Eucalyptus Systems. In 2014, Graziano Obertelli joined AppScale as VP of Operations from Eucalyptus Systems, where he was a co-founder. In 2017, Dimitrii Calzago joined AppScale as CTO from Hewlett Packard Enterprise, where he was Director of Cloud R&D.

In April 2014, AppScale Systems was named a 2014 Cool Vendor in PaaS by Gartner, Inc. In September 2014, AppScale Systems won a Bossie Award from InfoWorld for best open source data center and cloud software. AppScale partnered with Optimal Dynamics on April 11, 2016. AppScale was part of the AliLaunch Program, August 9, 2016. Chandra Krintz, Chief Science Officer of AppScale, was featured on Dev Radio in the episode titled "How to Rescue your apps with the help of AppScale" on December 16, 2016.

In late 2017, AppScale Systems started offering commercial support for Eucalyptus private cloud software after DXC Technology chose to stop the development and support of Eucalyptus. This prompted AppScale, led by members of the Eucalyptus founding team, to fork the code and continue developing the software, which was renamed AppScale ATS.

From Wikipedia’s article on AppScale, shared under CC BY-SA 4.0.4

Products and brands

Amazon EC2

CloudStack

DigitalOcean

Eucalyptus

Read the full text

Google Compute Engine

Kernel-based Virtual Machine (KVM)

Microsoft Azure

OpenStack

RackSpace

SoftLayer (IBM)

Xen

From Wikipedia’s article on AppScale, shared under CC BY-SA 4.0.4

Timeline

  1. 2009Founded Founded1

Sources

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