# Install umlet with Homebrew, apt, Nix, scoop This UML tool aimed at providing a fast way of creating UML diagrams. Version 15.1 via Homebrew; verified 2026-06-22. ## Install ```sh sudo av install brew:umlet ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install umlet ``` Evidence: local Homebrew formula metadata ### Linux - Debian apt (92%): ```sh sudo apt install umlet ``` Evidence: Debian stable package indexes: umlet from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz - Nix (92%): ```sh nix profile install nixpkgs#umlet ``` Evidence: nixpkgs package indexes: pkgs/by-name/um/umlet/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ### Windows - Scoop (92%): ```sh scoop install extras/umlet ``` Evidence: Scoop official bucket manifest trees: bucket/umlet.json from https://api.github.com/repos/ScoopInstaller/Extras/git/trees/master?recursive=1 ## Package facts - **Package key:** brew:umlet - **Package manager:** Homebrew - **Package manager page:** - **Version:** 15.1 - **Source summary:** This UML tool aimed at providing a fast way of creating UML diagrams - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** GPL-3.0-only - **Source archive:** - **Last updated:** 2026-06-22T14:06:32-07:00 - **Generated:** 2026-07-08T07:18:31+00:00 ## Executables - umlet (cli) - umlet-15.1 (cli) - umlet (alias) - umlet-15.1 (alias) ## Dependencies - openjdk ## Install behavior - Post-install hook: not defined - Bottle: available on all ## Freshness - Page generated: 2026-07-08 - Package-manager version: 15.1 - Package-manager updated: 2026-06-22 - Local data: ok - Upstream repository: https://www.umlet.com/ - info: Release/tag comparison is only available for GitHub repositories. ## Project history and usage UMLet is a free, open source UML diagramming tool built for fast sketching, plain-text editing of UML elements, exports, custom elements, and lightweight Java-based use. ### Project history UMLet's official change history traces the project back to v0.1 on January 25, 2001 and records v1.0 on June 21, 2002. The v1.0 notes already contain the long-running identity of the project: a lightweight Java application, cross-platform usability, a text editor panel for element attributes, undo/redo, new diagram types, and image export. The project evolved through a standalone Java application and an Eclipse plugin, with early releases adding SVG/PDF export, XML-based file storage, GPL licensing, custom graphical elements, EPS export, Eclipse 3 support, palette handling, and text-based sequence diagrams. Later official site text describes UMLetino as the web app and a Visual Studio Code extension as another way to use the same fast-diagramming idea. UMLet's core concept has remained deliberately unusual among UML tools: diagram elements are changed through text input and a small markdown dialect instead of modal property dialogs. The official site also documents runtime-customizable Java code for custom elements, letting users tailor their own diagram elements inside the tool. ### Adoption history Official download pages and the homepage show adoption across Windows, macOS, Linux, Eclipse, web, and VS Code contexts. The Homebrew input also records packaging through Brew, Debian, Nix, and Scoop, reflecting the tool's long tail as a Java desktop utility that still fits modern package-manager distribution. For developers and students, UMLet became useful where quick UML sketches mattered more than heavyweight model repositories. Its plain-text editing model, clipboard/export support, and small standalone footprint made it comfortable for people who install tools through package managers and want diagrams near code rather than inside a large modeling suite. ### How it is used Users create class, use-case, sequence, state, deployment, and activity diagrams; edit elements in a text panel; use palettes and Ctrl+Space help; export to EPS, PDF, JPG, SVG, or clipboard; and create custom UML elements. The package exposes command-line launchers in package managers, but the main workflow is a graphical desktop or plugin/web editor. In package-nerd practice, UMLet is the sort of tool installed for occasional architecture diagrams, README illustrations, classroom material, or issue discussions: lightweight enough to keep available through Homebrew, Debian, Nix, or Scoop without committing to a full modeling environment. ### Why package nerds care UMLet is significant because it is a long-lived, cross-platform developer tool with a stable, packageable identity: Java-based, GPL, standalone/plugin/web/VS Code surfaces, and file/export workflows that do not require a hosted account. Its history is unusually well documented by the project's own site, including the pre-1.0 era, which makes it stronger than many small GUI tools for source-backed package-history enrichment. ### Timeline - 2001: UMLet v0.1 released on January 25, according to the official change-history page. - 2002: UMLet 1.0 released on June 21 as a lightweight Java application with text-panel editing and cross-platform usability. - Early 2000s: Releases add SVG/PDF export, GPL open source licensing, XML file format, custom graphical elements, EPS export, and Eclipse plugin support. - Later releases: UMLet adds text-based sequence/activity features, improved exports, OS/Eclipse integration, web improvements, dark mode, and a VS Code extension. ### Related projects - The official site names UMLetino as the web app, the Eclipse plugin, and the Visual Studio Code extension as related project surfaces. ### Sources - - - - source_facts.package-manager ## Security Notes narrow executable package without higher-risk signals. - **Geiger risk:** green / low - narrow executable package without higher-risk signals ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** umlet - **Version Scheme:** 0 - **Revision:** 0 - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** stable ## Other Package-Manager Records - Debian apt - umlet - 15.1+ds-1: normalized package name match | Debian stable package indexes: umlet from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | simple, text driven UML drawing tool | https://umlet.com - Nix - umlet: normalized package name match | nixpkgs package indexes: pkgs/by-name/um/umlet/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - Scoop - extras/umlet: normalized package name match | Scoop official bucket manifest trees: bucket/umlet.json from https://api.github.com/repos/ScoopInstaller/Extras/git/trees/master?recursive=1 ## Related links - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Text processing packages](https://www.automicvault.com/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata. - [Developer build packages](https://www.automicvault.com/pkg/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata. - [Language runtime packages](https://www.automicvault.com/pkg/language-runtime-packages/) - Matched language runtime, compiler, or interpreter metadata. - [openjdk](https://www.automicvault.com/pkg/brew/openjdk/) - Runtime dependency declared by Homebrew. - [sdedit](https://www.automicvault.com/pkg/brew/sdedit/) - Shares av.db curated category or tags: cli, developer-tools, diagramming, java, uml. - [clang-uml](https://www.automicvault.com/pkg/brew/clang-uml/) - Shares av.db curated category or tags: cli, developer-tools, diagramming, uml. - [diagram](https://www.automicvault.com/pkg/brew/diagram/) - Shares av.db curated category or tags: cli, developer-tools, diagramming. - [ditaa](https://www.automicvault.com/pkg/brew/ditaa/) - Shares av.db curated category or tags: cli, developer-tools, diagramming, java. - [dpic](https://www.automicvault.com/pkg/brew/dpic/) - Shares av.db curated category or tags: cli, developer-tools, diagramming. - [likec4](https://www.automicvault.com/pkg/brew/likec4/) - Shares av.db curated category or tags: cli, developer-tools, diagramming. - [msc-generator](https://www.automicvault.com/pkg/brew/msc-generator/) - Shares av.db curated category or tags: cli, developer-tools, diagramming. - [overarch](https://www.automicvault.com/pkg/brew/overarch/) - Shares av.db curated category or tags: cli, developer-tools, diagramming, uml. - [plantuml](https://www.automicvault.com/pkg/brew/plantuml/) - Local package facts share a topical domain. Shared terms: cli, developer, developer-tools, diagramming, diagrams. ## Combined YAML source View the package source record on GitHub. [combined/umlet.yml](https://github.com/automic-vault/db/blob/main/combined/umlet.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - curated package history - package version freshness - av.db category and tag curation - package relationship graph - external package-manager database matches - cross-ecosystem install command graph