Online Diagrams Competitors (update)


Online diagrams are nifty little Flash applications that allows users to create and share flowcharts and design diagrams. It is easy to use, and has a number of templates and elements to choose from. Some of them also allows online collaborations and can be used as replace for Visio, that is definitely a cost-effective alternative. The most popular ones are:

  • – Diagram Software for the rest of us!
  • – Free online diagram software
  • – Online Diagramming & Design
  • Update (Feb 12, 2010): – The Online Wireframe Application
  • Update (Nov 17, 2010): – Online Diagram & Flowchart Software, Collaboration Tool
  • – Diagrams in your blogs – Diagram Software for the rest of us!


With Gliffy online diagram software, you can easily create professional-quality flowcharts, diagrams, floor plans, technical drawings, and more. Our online diagram editor makes it easier than ever to create great looking drawings. (

Gliffy offers API: The Gliffy Developer Program has been created with a simple vision in mind: We wanted to make it possible for developers to add Gliffy diagramming features to their existing web based applications. It also offers wordpress plugin that makes it simple to add Gliffy drawings to your blog posts. I use this one because everything I need is for free. It is also collaborative. – Free online diagram software


Lovely Charts is an online diagramming application that allows you to create professional looking diagrams, such as flowcharts, sitemaps, organisation charts, wireframes, and many more… For free. (

What I like about Lovely Charts is its sexy elements gallery (see examples), and easy workflow when creating connected elements. – Online Diagramming & Design


From Online Flowcharts & Computer Networks to Web Mockups & Sitemaps. Easy, Collaborative and Smart. Creately is an easy to use and collaborative diagramming application that runs in your browser. With a powerful and intuitive interface, Creately is great for teams that need to work on designs together. (

This one is collaborative project – it offers multi user diagramming. Offers a lot of gallery groups and elements. – The Online Wireframe Application


Hotgloo is online wireframe application that helps you smoothen the planning process, get a clearer picture of site informations, provide a precise framework for designers & programmers, build up a more intense project relationship with clients, improve the communication process. HotGloo is designed by IA’s for IA’s. With the help of the elements you can create a whole world out of wireframes. Just drag and drop, scale, link, name and rename them – it’s super easy and intuitional. Manage your projects: edit, comment & share any moment of the developing process with colleagues and clients. – Online Diagram & Flowchart Software, Collaboration Tool

LucidChart is a web-based application that helps you easily create flowcharts and diagrams of all types. Because it is built on HTML5, it runs in any major browser without any plugins. Whether you are an experienced user with other diagramming applications or a novice just getting started, LucidChart will fit your needs.

LucidChart also allows teams of all sizes to come together and collaborate simultaneously on a flowchart or diagram. This real-time collaboration enables team members to instantly see changes others are making on the document. Best of all, your final product will look slick and professional. – Diagrams in your blogs

yUML is tool to create and share simple UML diagrams in your blogs, wikis, forums, bug-trackers and emails. This tools works different. You directly call API to get diagrams (images). For example:

<img src="*%5BOrder%5D%2C%20%5BOrder%5D++1-items%20%3E*%5BLineItem%5D%2C%20%5BOrder%5D-0..1%3E%5BPaymentMethod%5D"/>

generates: – Online Vector Based Mockup & Wireframing Tool

Search more online diagram tools on google.

1 comment so far

  1. Kreo September 16, 2011 13:46

    Thank you for a lovely collection of diagramming software! I’d add as an option, it’s free online service for diagram building.

Leave a comment

Please be polite and on topic. Your e-mail will never be published.