A sequence diagram, also known as an event diagram is a type of UML diagram that shows a sequence of events and interaction of objects in a time sequence. At a glance, you will see different objects like a vertical axis which represents time messages are carried out. There is also a horizontal axis which illustrates the objects or elements involved in the system. This is primarily used to understand the requirements of a system and document the process of operation. It will be helpful for operations like hotel reservations or enrollment systems. But in order to generate this diagram, you need a sequence diagram tool that we are going to discuss below.
Top Free Sequence Diagram Tools
Score: 4.8 / 5
GitMind comes with a large library of templates and themes allowing you to produce and streamline your diagrams. It helps you create sequence diagrams in a graphical manner using its easy-to-use interface. Also, it has a lot of shapes for better diagramming and generates different types of diagrams. Furthermore, it allows you to provide access to other team members to share projects and collaborate.
Score: 4.6 / 5
Pricing: Free, $7.95 for a starter plan
A sequence diagram can also be done using Lucidchart. It enables users to draw visual illustrations from simple to technical diagrams. Likewise, this sequence diagram tool can increase the process of creating diagrams using its collaboration feature. In addition to that, it has a sequence markup feature in which you only need to type the order and rules of the system. By then, the diagram will be automatically generated showing the objects and operations involved in the process.
Score: 4.2 / 5
Pricing: Free; $5 monthly
Visual Paradigm is another free diagramming tool that can help you draw professional diagrams. The sequence diagram tool does not also limit users to the number of diagrams and shapes, no interruption of ads, and lets you enjoy the tool for an unlimited period of access.
Score: 3.9 / 5
Create your own sequence diagram using a professional sequence diagramming tool StarUML. Particularly, this program is developed to create UML diagrams like sequence diagram. It offers standardized UML shapes including the arrows and labels. For some who are coding a system, you can also import the codes of your program and display it as a diagram.
Score: 3.8 / 5
Pricing: Free; $4.99
Finding an online and free sequence diagram generator? Gliffy is the right program for you. Through this tool, you will be able to create diagrams anywhere. Another advantage of this tool is its full integration with Confluence and Jira which are products of Atlassian. This means you can create from previously made diagrams without leaving the Atlassian environment increasing the team’s productivity.
Score: 3.8 / 5
Pricing: Free; $4.95 monthly
Creately offers ready-made sequence diagram templates to help you easily create a sequence diagram for your business or organization. This sequence diagram generator lets you pick a suitable template to match the common processes or scenarios. It also supports other types of UML diagrams like Use case, DFD, and ER.
Score: 3.5 / 5
UMLetino 14.3 also works online and anyone can use it for free. As a free online UML tool, you don’t need to install any plugin. Unlike any other tools, the program isn’t visually appealing. The interface, shape selection, and customize options, you will find them very simple but is sufficient enough to create a comprehensive sequence diagram. At the same time, this sequence diagram maker gives you the capability to import and export from and to Dropbox.
Like any other diagrams, a sequence diagram makes it easy to understand the processes or operation of a system. Thus, if you want to model a sequence diagram of your business or understand the requirements of a system, then these free online sequence tools can get the job done. They are easy-to-use and anyone can use it even with basic knowledge of sequence diagram.