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.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
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  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
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  • 1
    SeaMonster - Security Modeling Software
    SeaMonster is a security modeling tool for threat models. It supports notations that security experts and analyzers are already familiar with, namely attack trees and misuse cases, and can connect to a repository for model sharing and reuse.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 2
    BoarderZone ASNalyzer
    A 100% pure Java Swing ASN.1 analysis utility for inspecting arbitrary BER-encoded data files. It allows inspection of data with unknown structure, can drill down to any nesting level and allows to interpret embedded OCTET STRING data recursively.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    The goal of Keen Manager is to design a simple and highly expandable control panel system for use by end-users and developers. It is also meant for having a multi-user authentication system in which each control panel can have it's own privilege system.
    Downloads: 0 This Week
    Last Update:
    See Project
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