“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 the 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 made my life so shiny happy. It auto deploys updated classes and JSPs. Holla!


JRebel Customer

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

Finally after seeing that JRebel won the JAX most innovative Java technology award, I am giving it a try. Sick of all the tomcat restarts.


JRebel Customer

JRebel has the ability to change code dynamically when the program is running or during a debug session, which I have been looking for a long time. I am sure it will save a lot of development time, especially when the size of the project is large.

Raj Annadurai

Java Developer

With JRebel, I am able to see code changes more or less in real time - JEE development is a joy once more!

Dan Corbin

Anthony Hodges Consulting Limited

Technical Consultant

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

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

Alterar método, adicionar atributos, criar classes, restart servidor, isso era um ritual a cada hora do meu trabalho. Com JRebel posso alterar qualquer código java que já é refletido na aplicação em funcionamento. Muito bom.

Claudio Miranda

Red Hat - Brazil

System Architect

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


JRebel Customer

Just started using JRebel; installation was done in 15 minutes and 1 hour later it saved me 20 minutes of restart time.


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

JRebel is like a drug for me, I am totally addicted to this tool because it saves a lot of nerves and energy and it is exactly what I need to speed up the software production process for my application.

Marian Furdui

Senior Software Developer