“Software is eating the world,” said Netscape founder and tech investor Marc Andreessen. Line by line, hardware is being consumed by code, and Java is spoken by a massive army of hungry mouths.

However, since the programming language was introduced in 1996, developers have had to write Java code on their own machines and then upload their code to remote servers for testing.

The idea that would become a glass of ice water to coders in redeployment hell was born in Estonia in 2006. That’s when Jevgeni Kabanov found a way to address Java’s core problem – the redeployment bottleneck. His insight led to a start-up and two products that smart Java teams wouldn’t be caught without. In other words, magic happened.

Developers at thousands of companies around the world use JRebel to instantly view code changes without redeploying the application server.

The result? Happy coders writing and testing beautiful code. Happy customers enjoying time and money saved through all that beautiful, productivity-boosting code.

Today, ZeroTurnaround is the labor of love by a global team of 150+. The company’s go-to-market heart beats in Boston, Massachusetts, while our development feet are firmly planted (and rapidly growing) in Estonia, at two offices in Tallinn and Tartu. We also have a branch in Prague, Czech Republic.

We are dedicated to making developers lives better, and we now have over 65,000 active users at 5,200+ customers, including 36% of Fortune 100, in 80+ countries.


We’re developers who make stuff for people just like us. Yes, our software is used by companies, from startups to well-known multinationals. But at their core, our products are consumer products. It’s a stroke of good fortune that our “consumers” happen to be other Java developers. You know, people like us. Here’s what some of them have said about life with the tools we’ve made.


JRebel is a blast! After the 30-day evaluation version expired, I found it hard to code anymore :-) It was very frustrating developing the old way without JRebel. Thank you very much for this wonderful piece of software!

Ronnie Kullick

KTBL Germany

Web Developer

I was attracted to JRebel because of its transparency, simplicity and efficiency. It's easy to set up and very nice to use!

Nikola Tankovic

Superius Ltd

Development Team Leader

JRebel has transformed a nightmarish 10-minute modify, compile and debug cycle to a matter of seconds. Thanks for giving me back my sanity.

Joel Rosi-Schwartz

IG Group

Middleware Java Developer

I have been very impressed with JRebel, wish I had come across this product a lot sooner, would have saved me so much time/boredom waiting for so many container restarts.

Nathan Dean

Sapienza Consulting

Senior Developer

Like a fish rediscovering water.

Crown Display

JRebel Customer

I just hated the whole Eclipse IDE and one of my co-workers suggested I try Jrebel since 40% of my time was waiting on Eclipse to build and run. With Jrebel, things are going much smoothly now.

Arnold Serrano


Java Developer

Jrebel is so awesome it almost hurts. Or rather, not using it hurts.


JRebel Customer

Over the last 78 days, JRebel prevented at least 1774 redeploys/restarts, saving about 71.9 hours!

LSIS Laboratory

JRebel Customer

Saving time with JRebel is so amazing. No more redeployments... Refactoring classes, Refresh the page and that's it! Amazing stuff!


JRebel Customer

Con JRebel, salvar un archivo en el IDE y ver mis cambios inmediatamente en la pagina sin tener que volver a hacer "deploy", no tiene precio.

Maricel Quesada


Senior Java Developer

It used to take 5 mins to rebuild and restart the server - now we see changes pretty much instantaneously. I saw the value right away.

Peter Barber

Caitlin UK

JRebel Customer

JRebel is a real solution for build/deployment pain in Java EE. Good product. It just works and doesn't need a 3 hour configuration phase :)

Tuna Akin


Software Developer / Consultant