“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 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

JRebel is really an amazing tool.


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

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


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

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

Luci Onea

TeamNet International, Romania

Java EE Developer

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


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

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

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

IT Crowd

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