“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.


Everyone who has tried it has fallen in love with it.


JRebel Customer

I started using JRebel for web and server deployments on JBoss and I've been addicted ever since. It simply just works :-)

Kevin Cruickshanks

Machina AS

Project Manager

Since introducing JRebel to our Java development teams, we have not only seen a 30% increase productivity, but also a marked decrease in service requests due to software faults. Our teams can now focus 100% of their attention on development without being hindered by the J2EE cycle Build and Redeploy steps.

Alistair Oldfield

Emeldi Software Services

Project Manager

To whomever tells me 'I don't have time to lose trying to use JRebel', I would say 'You're actually losing time by NOT using it'

Aurelien Broszniowski

Software Engineer

We are all very happy with the fact of not wasting time on things that are not coding and finishing things.


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 heard about JRebel from my colleague who highly recommended using it. After trying it out a couple of times, it made perfect sense to me, and I haven't looked back since. Great product.

Marcin Jekot


JRebel Customer

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

Start to really like JRebel. Make Java feel like a scripting language.


JRebel Customer

We had a need for faster turnarounds since we have huge projects that take ages to build and deploy. Jrebel is an excellent tool to reduce that time:)

Sven Varkel

Ericsson Eesti AS

Development Team Manager

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


JRebel Customer

We were attracted to JRebel because we had grown very frustrated with starting JBoss app sever constantly. After seeing JRebel mentioned in several blogs recently, we gave it a try. While it doesn't eliminate app server restarts completely, we only redeploy about 10% as much as before, saving both time and attention span!

Adam Wells

PIPE Networks Pty Limited

Development Manager