Jump to content

About GreenSock

There is a special breed of developer/designer with a passion for building experiences, not just static interfaces. They won't settle for simple rollovers and a few fadeins/fadeouts sprinkled throughout their projects. They sweat the details. For them, success isn’t measured by "does it work?" but rather "is it a joy to use"? Does it pleasantly surprise and captivate?" They're students of their craft, pushing the limits and chasing excellence. They’re rarely satisfied with their own work, but that's what makes them good. The screen is their playground.

That special breed is precisely who we aim to serve. Having been in the trenches for over 15 years, we understand the unique challenges that developers face.

One of the most common frustrations we encounter is the lack of reliable, well-crafted, and robust code that could be consistently used across projects. Sure, there were open source options and code snippets on blogs but most of them were either abandoned, inefficient, anemic, obtuse, bloated, or riddled with bugs. The commercial components we saw were largely built for novices, lacking professional-grade flexibility or performance. So we set about the task of crafting the tools we craved. When we shared them with the community, the response was nothing short of astounding.

We’re obsessed with making the tools better and we're committed to supporting the community that has grown to love our tools almost as much as we do.

Our Mission


Creating world-class tools that stand up to the most rigorous implementations.


Build tools that aren't just one-trick-ponies, but can be leveraged across a wide range of projects with ease.


Deliver excellent support through training, detailed docs, and community.


Maintain a reputation of integrity and reliability, focused around our users.


Empower creative expression in a fun way by making our tools intuitive and highly capable.


Avoid the common frailties of open source projects while also keeping the tools very accessible.

The Customers

Our Team

Jack Doyle

Founder and Code Connoisseur

An odd mix of designer and developer, Jack transitioned from an award-winning artist into a code-obsessed geek who crafted the GreenSock tools. He is the world’s worst multi-tasker (he can barely walk and chew gum at the same time), but if you give him a challenge or riddle, his one-track (ahem, stubborn) mind locks in and won’t let go until it is solved. He gets a kick out of dreaming up ways to accomplish various advanced feats with JavaScript/HTML/CSS and then delivering tools that make it easy for others.

Listen to Jack interviewed on the Eggheadio podcast here.

Jack and his Brazilian wife live near Chicago with their 2 sons. He played volleyball for Illinois State University and still enjoys playing despite his aging joints and declining vertical leap. He loves discussing the issues related to what people believe (and why), who Jesus is (or isn’t), and how faith affects our lives in practical ways. He shared a little bit about his faith journey here.

Zach Saucier

Creative Technologist

A geek from birth, Zach found his way into frontend web development in high school and fell in love. He has written several articles for CSS-Tricks, spoken at conferences around the world, and he is constantly honing his craft. His years mentoring college students made him into an understanding teacher who loves meeting people and hearing their stories.

As GreenSock's Creative Technologist, Zach does everything from teaching and speaking to improving greensock.com to answering questions in the forums.

Zach can’t sit still and is always doing something. If it’s not something related to code it’s playing soccer, board games, enjoying the woods, or teaching himself a new skill. He and his wife also love being active in their church and community.