JRebel
Java development tools
Application development software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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What is JRebel
JRebel is a Java developer productivity tool that enables hot reloading of code changes in running JVM applications without full redeploys or restarts. It is used primarily by Java developers working with application servers and common frameworks to shorten the edit-compile-run feedback loop during development. The product integrates with popular IDEs and build workflows and focuses on class/resource reloading behavior in local development environments.
Fast feedback via hot reload
JRebel updates classes and many application resources in a running JVM, reducing the need for full application restarts during development. This can shorten iteration time when working on server-side Java applications with longer startup times. It is particularly useful in projects where redeploy cycles are a major bottleneck.
Broad IDE and framework support
JRebel provides integrations for common Java IDEs and supports many widely used Java frameworks and application servers. This makes it easier to adopt across teams without changing core build tools or project structure. The focus is on development-time compatibility rather than introducing a new runtime platform.
Works with existing JVM apps
JRebel is designed to be added to existing Java applications as a development-time agent rather than requiring a rewrite or a new programming model. Teams can use it across multiple projects and architectures, including monoliths and services, as long as they run on the JVM. This positions it as a workflow enhancement alongside other development tools rather than a replacement for them.
Not all changes reload cleanly
Some code changes still require a restart, especially when they affect class structure, certain framework initialization paths, or complex classloader behavior. Results can vary by application server, framework, and project configuration. Teams typically need guidelines on what changes are safe to reload versus when to restart.
Commercial licensing and management
JRebel is a proprietary product that requires paid licensing, which can be a barrier for some teams compared with free development tooling. Organizations may need to manage seats, renewals, and compliance across developer machines and CI environments. This adds procurement and administration overhead relative to purely open-source alternatives in the Java toolchain.
Primarily local development focus
JRebel targets developer inner-loop productivity and does not replace profiling, testing, or production observability tools. It does not address scheduling, templating, or other runtime application concerns that adjacent tools in the ecosystem cover. Teams still need complementary tools for performance analysis, automated testing, and deployment pipelines.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Quote-based / Custom | Not publicly listed — contact sales for a personalized quote. | Official site requires requesting a personalized pricing quote; license costs scale with number of seats and options for JRebel, JRebel Enterprise, and XRebel are available. |
Seller details
Perforce Software, Inc. (JRebel product line; originally by ZeroTurnaround)
Minneapolis, Minnesota, United States
1995
Private
https://www.jrebel.com/
https://x.com/jrebel
https://www.linkedin.com/company/jrebel/
