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JRuby Alternatives
Similar projects and alternatives to JRuby
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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Pandas
Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
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tokio
A runtime for writing reliable asynchronous applications with Rust. Provides I/O, networking, scheduling, timers, ...
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
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pytest
The pytest framework makes it easy to write small tests, yet scales to support complex functional testing
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glimmer-dsl-swt
Glimmer DSL for SWT (JRuby Desktop Development Cross-Platform Native GUI Framework) - The Quickest Way From Zero To GUI - If You Liked Shoes, You'll Love Glimmer!
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Glimmer
DSL Framework consisting of a DSL Engine and a Data-Binding Library used in Glimmer DSL for SWT (JRuby Desktop Development GUI Framework), Glimmer DSL for Opal (Pure Ruby Web GUI), Glimmer DSL for LibUI (Prerequisite-Free Ruby Desktop Development GUI Library), Glimmer DSL for Tk (Ruby Tk Desktop Development GUI Library), Glimmer DSL for GTK (Ruby-GNOME Desktop Development GUI Library), Glimmer DSL for XML (& HTML), and Glimmer DSL for CSS
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glimmer-dsl-libui
Glimmer DSL for LibUI - Prerequisite-Free Ruby Desktop Development Cross-Platform Native GUI Library - The Quickest Way From Zero To GUI - If You Liked Shoes, You'll Love Glimmer! - No need to pre-install any prerequisites. Just install the gem and have platform-independent GUI that just works on Mac, Windows, and Linux.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better JRuby alternative or higher similarity.
JRuby discussion
JRuby reviews and mentions
Posts with mentions or reviews of JRuby. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2025-09-13.
- Ruby Executes JIT Code: The Hidden Mechanics Behind the Magic
Are you aware of jruby?
https://www.jruby.org/
It is ruby running on a Java Virtual Machine. Imposes all downsides of the JVM (try to allocate more that 4GByte per object!) and provides JVMs concurrency model. Currently supports Ruby 3.1 (it claims to support 3.4, read the fine print if your specific feature is supported!)
- Java at 30: The Genius Behind the Code That Changed Tech
Another way to look at it based on coming across it in enterprise:
How did he build something adopted by so many enterprises?
It does some things at scale very well and has been afforded the performance improvements of very smart people for 30y.
It’s not to say the language isn’t verbose, one of my favourite features was the ability to write code in other languages right inside the a Java app pretty well in-line by using the JVM, thanks to JSR-223.
It was possible to write Ruby or Python code via Jruby or Jython and run it in the JVM.
https://www.jython.org/
https://www.jruby.org/
https://docs.oracle.com/javase/8/docs/technotes/guides/scrip...
- Calling Java from JRuby
- Shoes makes building little graphical programs for Mac, Windows, Linux simple
As someone who has looked at Shoes several times but never dove in, it's confusing how Shoes 4 has been the "preview version" of Shoes for, like, a decade or more. It made me actively avoid getting invested in Shoes 3 (the release promoted on the linked website) because Shoes 4 requires JRuby and I am happy with CRuby (the Ruby interpreter most people think of when they hear "Ruby").
https://github.com/shoes/shoes4/
http://www.rubydoc.info/github/shoes/shoes4
No disrespect to the developers but to me it feels like taking over a GUI toolkit created "to teach programming to everyone" (to quote the Shoes 4 readme) and making it depend upon a super-complicated enterprise-focused Ruby was sort of Missing The Point™ in a huge way.
Heck I couldn't even switch to JRuby if I wanted to because I <3 Ractors and JRuby still lacks CRuby 3.0 feature parity: https://github.com/jruby/jruby/issues/7459
- JRuby 9.4.2.0 released with many fixes and improvements
__callee__ now properly returns the name under which a method was called, which will be the new name in the case of aliased methods. #2305, #7702
- JRuby 9.4.0.0 Released, now supporting Ruby 3.1 and Rails 7
Issue tracker: https://github.com/jruby/jruby/issues
- JRuby 9.3.9.0 Released with stdlib CVE fixes
rdoc has been updated to 6.3.3 to fix all known CVEs. (#7396, #7404)
- JRuby 9.3.8.0 Released - with support for lightweight fibers!
Altering the visibility of an included module method no longer changes what super method gets called. (#7240, #7343, #7344, #7356)
- Golang in the JVM
It looks like the readme is copy pasta from jruby: https://github.com/jruby/jruby
- JRuby 9.3.4.0 released
Homepage: https://www.jruby.org/
- A note from our sponsor - Stream getstream.io | 23 Dec 2025
Stats
Basic JRuby repo stats
27
3,857
9.9
5 days ago
jruby/jruby is an open source project licensed under GNU General Public License v3.0 or later which is an OSI approved license.
The primary programming language of JRuby is Ruby.
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