We're Mobile Pioneers

Who We Are

We know how to put mobility to work for you

Founded in 1993, we're experts in building enterprise-class apps. That means apps that are intuitive, wildly useful and robust. And no matter what industry you're addressing, chances are we've built apps for it. From automotive to video production and everything in-between we've delivered hundreds of apps and solutions to our clients.

We build apps users can't put down

You'll find our user interfaces are best in class for usability and navigation. Our applications are powerful and robust and seamlessly handle large amounts of data. Communications and synchronization work flawlessly. And when it comes to innovation — our work speaks for itself.

We do it right the first time

We have a history of delivering high quality solutions and developing long-term consultative relationships with our clients … throughout the country and across the world.

Our Beginnings

Set the Wayback Machine to 1993

It all began at MacWorld in 1993. Company cofounder Lou Krieg went in search of great ideas for a new software company. One look at the Newton and the decision was simple, Green Mountain Software was born. The Newton was small, lightweight for its day and powerful — a true paradigm shift in computing. While PCs put the power of computing on our desktops, the Newton put the power— and simplicity— of computing into the hands of the rest of us.

Working Together

We're flexible in how we work together… and in how your application is designed. Your application can be built organically— or to a pre-defined spec. When it comes to maintaining your app, we can design it so you can perform simple updates on your own— or we can build, implement and maintain the entire system for you.

A History of Mobile Milestones

We were among the first companies to win a contract for Windows CE, and we began developing for Palm from its inception. When the iOS platform opened up for development it was a no brainer to adopt it and add Android, too. So as new technologies come along we continue to up our game. When you come to us with with your app idea, you can be assured we'll work with you to bring your vision to life through a well-thought-out technical implementation.


Innovation, Excellence and Respect

Green Mountain Software is founded on the premise that innovative technologies, excellence in engineering, and sound business practices can peacefully coexist with respect for people, the environment and a high quality of life. We are committed to the highest standards of ethical business practices and respect for our customers and associates. We believe our goals are fully compatible with the character that makes Vermont a special place to live and work.

We are a GSA-approved vendor, and proud members of VBSR (Vermont Businesses for Social Responsibility) and the Vermont Technology Alliance (VtTA).


Lou Krieg

President and Founder

Lou grew up in Vermont, and after doing his stint with Fortune 500 companies found his way back. He is directly involved in collaborating with clients in architecting and developing mobile solutions that uniquely meet their needs. With more than 20 years of senior management experience, he works on some of the company's most innovative projects. He is a key advisor to our clients in vetting app ideas, making intelligent choices, and designing the best technical solution to achieve their goals. Lou has a demonstrated proficiency in mobile computing and networking technologies, including systems design and architecture, user interface design, communications, database design, embedded systems, and network management. Lou's high-level technical management experience includes Director level positions with Motorola Information Systems Group, Unisys Networks and Bio-Tek Instruments. He is an accomplished speaker and author on key technology issues. Lou received a BS in Computer Science from the University of Vermont.

Ann Pettyjohn

Vice President and Founder

Ann is a native Oregonian, and found Vermont to be her "home" from the moment she set foot inside its borders. She is responsible for working with clients and strategic partners in leveraging mobile computing technology to meet their specific business needs. Ann is responsible for business development and operations … in essence, “everything but programming.” When it comes to working with Green Mountain Software, Ann is there to make sure your project runs smoothly. Ann is an experienced talent in corporate and product branding. She has a proven track record in working with clients to develop and implement strategic business and marketing plans— from product inception through launch. With more than 20 years technology marketing experience, she has held senior management positions with Motorola, Prime Computer and Boise Cascade. She is a published author and has been a frequent contributor to "Network World". She graduated maxima cum laude from the University of Portland with a BA in Communications. Ann has a firm belief that Vermont and technology are a good mix. As a founding board member of the Vermont Technology Alliance, she is an evangelist for the software industry in Vermont.

Some of our friends

  • AC Rail
  • Academics XL
  • ACGE
  • AllScripts (ChannelHealth)
  • Amaze Design (Anway)
  • American Retirement Corporation
  • BioTek Instruments
  • Catamount Software
  • City of Burlington, Vermont
  • Coffee Lab International
  • Comprehensive Health Systems
  • Companion Technologies
  • deCarta, Inc.
  • Digital Scout
  • Dynapower Corporation
  • Ecolab Inc. (Audits International)
  • Electric Power Research Institute
  • Enfour
  • FlightSite
  • Fluid Components International
  • Fluke Biomedical Corporation
  • GameTheory
  • GolfIdeas
  • Green Mountain Power
  • Greene Ventures
  • Greenleaf Medical
  • GVA Grimley
  • Hendrix Wire & Cable
  • Housecall Medical Resources
  • Indy Racing League
  • Jazz Software
  • JWI Forming
  • Lancer Corporation
  • LCSS-QL Associates
  • Leica Instruments
  • Litronics
  • Logic Pilots
  • Maaco Enterprises
  • MBF Biosciences
  • MedAptus (MedCompanion)
  • NOVA Technology Corporation
  • Palm Inc.
  • Physicians Computer Company
  • Planned Parenthood of Northern New England
  • Pro-Cut International
  • Production Magic
  • RAM Software Systems
  • Security Source
  • Shaft Drillers International
  • SMS (Avio)
  • Spark Alley
  • Sunburst Communications
  • Super High Street
  • Synergy Software Technologies
  • Time and Materials Software
  • United Technologies
  • Voxent Healthcare Technology Services
  • Who Is Going Out?
  • Winn Solutions
  • Will/Grundy EMS System
  • WiVID Systems