Project Summary
JRuby is an 100% pure-Java implementation of the Ruby programming language.
JRuby is the effort to recreate the Ruby interpreter in Java. JRuby is tightly integrated with Java to allow both to script any Java class and to embed the interpreter into any Java application.
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In a Nutshell, JRuby...
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has a well established, mature codebase
maintained by a large development team
with stable Y-O-Y commits -
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took an estimated 259 years of effort (COCOMO model)
starting with its first commit in September, 2001
ending with its most recent commit about 19 hours ago
Quick Reference
Common Public License 1.0
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These details are provided for information only. No information here is legal advice and should not be used as such.
GNU General Public License v2.0 or later
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Commercial Use
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Distribute Original
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Include Copyright
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These details are provided for information only. No information here is legal advice and should not be used as such.
MIT
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Use Patent Claims
Forbidden
Sub-License
Hold Liable
Required
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
Include Install Instructions
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
Did You Know...
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in 2016, 47% of companies did not have formal process in place to track OS code
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by exploring contributors within projects, you can view details on every commit they have made to that project
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65% of companies leverage OSS to speed application development in 2016
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30 Day SummaryAug 12 2025 — Sep 11 2025
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12 Month SummarySep 11 2024 — Sep 11 2025
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