Browse free open source UML tools and projects below. Use the toggles on the left to filter open source UML tools by OS, license, language, programming language, and project status.

  • The All-in-One Commerce Platform for Businesses - Shopify Icon
    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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  • 1
    plantuml
    PlantUml allows to quickly create some UML diagram using a simple textual description language.
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    Downloads: 5,272 This Week
    Last Update:
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  • 2
    A fast and reliable tool, written in Java 8, for generating professional UML sequence diagrams from text. Supports actors, con-/destructors, threads, broadcasts, notes, and fragments. Can serve as a Javadoc taglet. Exports PDF, (E)PS, SVG, PNG, ... The source code is hosted at http://github.com/sdedit/sdedit
    Downloads: 19 This Week
    Last Update:
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  • 3
    crystal-facet-uml

    crystal-facet-uml

    Create consistent Uml diagrams

    As software architect, you create a set of diagrams describing use-cases, requirements, structural views, behavioral and deployment views. crystal_facet_uml keeps element names and element hierarchies consistent. It exports diagrams in svg, pdf, ps and png formats to be used in text processing systems like docbook, html, latex. This tool runs on your local PC and is based on glib, gdk, gtk, cairo, pango, sqlite.
    Downloads: 16 This Week
    Last Update:
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  • 4
    ObjectBuilder is a C++ CASE tool (CASE, refactoring, documentation generator). It lets you create, manipulate and navigate classes, class relations, class members and class methods at a high level of abstraction.
    Downloads: 2 This Week
    Last Update:
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  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

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  • 5
    PHPCallGraph generates static call graphs for PHP source code using the CodeAnalyzer of the InstantSVC project and the DOT tool. The graphs can be leveraged to gain a better understanding of large software systems or even to debunk design flaws in them.
    Downloads: 2 This Week
    Last Update:
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  • 6
    plantuml-dependency
    PlantUml Dependency allows to parse / reverse engineering source files (only Java is supported by now) to generate a PlantUml description, allowing to draw the UML class diagram associated to the source code.
    Downloads: 1 This Week
    Last Update:
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  • 7
    ATS4 AppModel is an application flow design tool supporting application specification work, model based testing and test script generation. It provides simple interface to manage complex models. ATS4 AppModel is part of Nokia ATS tool family.
    Downloads: 0 This Week
    Last Update:
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  • 8
    The "Architecture Visualizator" parses source code and analyze the object oriented structure as well as the control flow and logic aspects. After that it visualize the results for example as graphviz file.
    Downloads: 0 This Week
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  • 9
    This is a game.Player has to save his target point(staff).There is an enemy tank. The enemy tank will be trying to kill the staff.If staff is killed then game will be over. And if player can kill the enemy tank then player will win the game.
    Downloads: 0 This Week
    Last Update:
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  • Enterprise and Small Business CRM Solution | Clear C2 C2CRM Icon
    Enterprise and Small Business CRM Solution | Clear C2 C2CRM

    Voted Best CRM System with Top Ranked Customer Support. CRM Management includes Sales, Marketing, Relationship Management, and Help Desk.

    C2CRM consists of four modules that integrate to provide a comprehensive CRM solution: Relationship Management, Sales Automation, Marketing Automation, and Customer Service. Only buy what each user needs.
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  • 10
    The CoreASM project focuses on the design of a lean executable ASM (Abstract State Machines) language, in combination with a supporting tool environment for high-level design, experimental validation and formal verification of abstract system models.
    Downloads: 0 This Week
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  • 11

    DBDoc

    Database to PlantUml or yEd diagrams.

    Program creates the database table diagrams from databases metadata.
    Downloads: 0 This Week
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  • 12
    pgDesigner is a Datamodel designer for PostgreSQL written in Gambas language.
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    Downloads: 0 This Week
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  • 13
    DwCase should be an alternative to current data modelleres for databases.
    Downloads: 0 This Week
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  • 14
    E.R.A simple uml

    E.R.A simple uml

    Very simple entities relation attributes tool with export

    I was tired of the wayward UML tools to explain some simple ideas and share with my colleagues, I created this tool to create simple schema simply. Not perfect but do the job.
    Downloads: 0 This Week
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  • 15
    A Python programming environment providing memory sizing, profiling and analysis, and a specification language that can formally specify aspects of Python programs and generate tests and documentation from a common source.
    Downloads: 0 This Week
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  • 16
    JS/UML is a plugin for the Eclipse IDE that reverse-engineers JavaScript code to a UML model which can then be used to generate documentation and other artifacts.
    Downloads: 0 This Week
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  • 17
    JSeq is a tool to automatically create UML sequence diagrams. It works by following the execution of a Java program, noting each method entry and exit. It then generates a sequence diagram from this information.
    Downloads: 0 This Week
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  • 18
    JSeqUnit enhances Javadoc documentation with UML sequence diagrams that are generated with the help of JUnit tests. It uses JSeq to trace the execution of test executions. It supports re-engineering of components through improved reverse engineering of methods with the help of sequence diagrams.
    Downloads: 0 This Week
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  • 19
    Lifecycle Manager allows software engineers to manage all stages in the development lifecycle without losing any knowledge of decisions and changes. This system is a groupware knowledge management system for software development.
    Downloads: 0 This Week
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  • 20
    This is a modeling tool generating code from activity diagrams. The main goal is to achieve a good code generation. I would like to have different possibilities like HTML mapping from diagrams and Java code generation (maybe others) chosen by the user.
    Downloads: 0 This Week
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  • 21
    Downloads: 0 This Week
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  • 22
    A text-based editor to dynamically create UML Sequence Diagrams.
    Downloads: 0 This Week
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  • 23
    NetBeans Modules Dependencies

    NetBeans Modules Dependencies

    Display NetBeans Module Dependencies

    Display in a UML-like diagram the dependencies of applications developed in NetBeans. Originally meant only to display module dependencies of NetBeans Rich Client Platform applications, thanks to the platform itself, it can display dependencies of "plain" and Maven-based Java projects. To display the dependencies, a new action is made available in the 'Source' menu and in the toolbar. The generated graphs can be saved as images or exported in PlantUML or Gephi formats.
    Downloads: 0 This Week
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  • 24
    NovaUML is growning on the StarUML project. This project seeks to improve and extend the StarUML software in various ways while maintaining compatability with its api's and standards.
    Downloads: 0 This Week
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  • 25
    Development of traces for VDM. A trace statement is used to enhance a VDM models quality by providing an easy way to describe statements used to perform regression testing on the model. This project is related to the OvertureTool project.
    Downloads: 0 This Week
    Last Update:
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