“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.


I see JRebel as this "missing piece" in the whole picture where we could see Java-stack not only as a stable, well-tested environment to build applications on but also as a rapid development environment.

Martins Barinskis

Senior System Analyst Programmer

For the price, and for how easy it is to get installed and running in a developers’ environment, using JRebel is pretty close to a no-brainer.

Jim Lesko

GT Nexus

JRebel Customer

Given the nominal cost of JRebel and the huge amounts of time it saves, I would not consider developing Java EE applications without it.

Luke Tebbs

Staffing Systems


I am so much more productive with Java, JPA and Spring (and JRebel) than i was with RoR the last months… It's really fun again.


JRebel Customer

JRebel is easy to use right out of the box and fun to work with. It saves a lot of time in the development phase!

Hartmut Kalk

Comet Software

Software Architect

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

Jrebel is one those small non-intrusive pieces of software that you just can't live without!


JRebel Customer

Over the last 265 days JRebel prevented at least 1,209 redeploys/restarts saving me about 49 hours.

Equity Trust Company

JRebel Customer

The time period between making a change, rebuilding, deploying and restarting the container has always been a sticking point with me, but JRebel allows me to develop constantly without bouncing back and forth. Personally, it's one of the more important pieces of software I've come across in quite some time.

Mark Gargan


Senior JEE Developer

JRebel is really great - it helped our team save a lot of hours!

Luci Onea

TeamNet International, Romania

Java EE Developer

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


JRebel Customer

Since evaluating JRebel, we have seen redeploy times significantly reduced and I am therefore hoping that we can be more productive and turn around our development projects in a quicker timeframe.

Grant Smith

BiP Solutions

Head of IT