Project Summary
Umple is a technology for model-oriented programming.
It can be used for pure UML modeling or to add UML constructs, such as associations and state machines to code written in Java, Python, PHP, C++ or Ruby. It generates code in these languages that can save a large amount of programming effort and result in higher quality.
The UmpleOnline tool allows you to edit UML diagrams graphically, and watch the Umple textual code being written in real time. This works the other way too: You can write textual Umple and watch the corresponding UML diagram appear.
Umple is being extended to support patterns, tracing and a variety of other features.
Umple is written in itself, which is central to maintaining its quality.
Umple can be used today by any programmer or modeler
In a Nutshell, Umple...
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has a well established, mature codebase
maintained by a large development team
with increasing Y-O-Y commits -
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took an estimated 423 years of effort (COCOMO model)
starting with its first commit in November, 2010
ending with its most recent commit 4 days ago
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MIT License
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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 )
There are no reported vulnerabilities
Project Vulnerability Report
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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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use of OSS increased in 65% of companies in 2016
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30 Day SummaryAug 14 2026 — Sep 13 2026
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12 Month SummarySep 13 2025 — Sep 13 2026
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