“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 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

Manual redeploys were drawing us crazy, tired and bored. Now development is fun again.

IT Crowd

JRebel Customer

We found it very useful to dig into the SQL queries. We quickly found some very lengthy and complicated queries. We also found that our session can get as large as 30 Mb - we had too many references to Spring beans in the session.

Federico Russo

Antea srl

JRebel Customer

I'm afraid our developers might go for a strike if we say to them, ‘Hey, we're not going to use JRebel anymore.


JRebel Customer

Working with JBoss, Seam, JSF and the Eclipse JBoss Tools...It's very painful. I had read about JRebel a couple of times on and javalobby and decided to give it a try. It works great.

Raymond Hulha


So far, everybody I speak to about JRebel is satisfied with it - frankly, I cannot believe nobody thought of JRebel before.

Martijn Hinten

The Netherlands

Independent Software Engineer

Been using JRebel ( for around 10 minutes now.. Feels like I have saved 11 minutes of redeploying time


JRebel Customer

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


JRebel Customer

The only advantage of being in JavaOne [India] was JRebel. Totally awesome product. Need to try that immediately!


JRebel Customer

Why isn't JRebel part of the standard Java SDK?

Jirí Bubník

Datalite, Czech Republic

Software Architect

You mean you haven't tried JRebel already! How could you have survived this long as a Java developer without it!


JRebel Customer

#IntelliJ and #JRebel combined cost less than your consultant's daily wages, but will boost his productivity x10. Why hesitate ?


JRebel Customer