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Dev tools · January 28, 2021

Gleek

Free online diagramming tool for developers

Gleek launched on January 28, 2021 with 309 votes, #40 of 3,157 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 5 years on.

Visit gleek.io ↗Gleek alternativestop 1% of January 2021

In plain words

Gleek is a free online diagramming tool designed for developers who prefer writing code over manual drawing. Users type text-based commands to generate diagrams with connections, making the process faster than traditional drag-and-drop interfaces. The tool emphasizes speed and a natural workflow for technical users, allowing them to create visualizations quickly within a coding-like environment.

written from the facts on this page · September 2026

From the sources

Gleek.io is a diagram maker focused on speed ⏱ - typing code is much faster than drag-and-drop - for developers, it is more natural to write than to draw - generate a diagram with connections Create your first diagram in Gleek.io & write your feedback 🙏

Create diagrams without touching your mouse. Generate informal, class, sequence, state, gantt, user journey or entity-relationship diagrams using only the keyboard.

A flowchart is a type of diagram that shows a step-by-step view of a process. The flowchart documents the tasks and decisions needed for the goal to be achieved. An entity-relationship diagram (ERD) is a tool used to help a developer to design databases at the conceptual level. You can use Chen or Crow’s foot notation with Gleek. Class diagrams are used in software engineering to describe the structure of a system. A class diagram uses UML to show the classes, attributes, methods, and their relationships to each other, in the system. A sequence diagram helps create an overview of how a system works and how all the different parts interact with each other over time, carry out the required…from gleek.io

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    Create diagrams without touching your mouse. Generate informal, class, sequence, state, gantt, user journey or entity-relationship diagrams using only the keyboard.

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