UML Diagram or Unified Modeling Language Diagram is a collection of diagrams to help you show and visualize a software program. Thus, these diagrams are a combination of activities and sequence of actions that focuses on processes that take place during a specific period of time. Good thing is that we have these free UML diagram tools in 2020 to help you make these amazing diagrams for your convenience.
Best 8 Free Online UML diagram tools
Score: 4.8 / 5
Click the above image to download free templates
GitMind is an awesome online application where you can create UML diagrams for free. Editable templates are also available to help you make UML diagrams fast and easy. Moreover, it has a friendly user interface that displays editing features for hassle-free editing experience.
Score: 4.1 / 5
Pricing: Free; $4 for a starter plan; $9 for advanced
Another intuitive and powerful UML diagram software is Visual Paradigm. It also offers free templates to help you save time and effort by just choosing from the given list. Another interesting feature is that it shows you the editing components whenever you hover to the interface.
Violet UML editor
Score: 4.2 / 5
Violet UML Editor is another UML diagram tool that is very easy to learn and to use. It is also a cross-platform tool intended for students, developers, and authors who need to make UML diagrams quickly. The good thing on this tool is that this is a portable program that you may copy to your flash drive or any device, so you may take it with you whenever you need to create diagrams without installing.
Software Ideas Modeler
Score: 4 / 5
Pricing: Free; starts at $68
We also have another great UML diagram creator that features easy and fast drawing tools, generating documents such as PDF and RTF, designing and styling options, Source Code Generation like C++, Java, and more. Moreover, depending on the template you’ve selected, you can insert images and any other objects to your diagram by dropping them in the editing area.
Score: 3.8 / 5
Next, we have UMLet 14.3. This is an open-source built-in application for Windows that will help you make UML Diagrams for free. Its main features include fast and easy making of diagrams from the given templates, allows you to build a sequence and a diagram of your activities from plain texts. Meanwhile, on its exporting feature, it supports eps, pdf, jpg, SVG, and clipboard.
Score: 4.6 / 5
ConceptDraw Diagram is an excellent UML diagram creator applicable on both Windows and Mac. This awesome tool is well suited for UML diagrams as it offers a number of solutions with vector stencils and templates for any project you need. Another good thing about this tool is that you can use GIF images to have an animated slide on your drawing for technical purposes.
Score: 4.8 / 5
Pricing: Free; $13/ month, $299 for standard, and $589.99 for Professional
Visio is another tool you may use in creating UML diagrams. It offers templates and modern UI. Thus, this feature can make and bring your diagrams to life with data icons, overlays, graphics, and colors for better visualizations.
Score: 43.7 / 5
These are the best free online UML diagram tools we listed for you. Each tool offers different and unique features for you to choose from. Meanwhile, if you are looking for the easiest and totally free tool, GitMind is the best tool for you.