Diagram.codes
Diagram.codes is a free online diagramming tool that allows users to easily create flowcharts, UML diagrams, UI mockups, network diagrams, and more. It has an intuitive drag-and-drop interface with various shapes and connectors.
Diagram: Free Online Diagramming Tool
A free online diagramming tool for creating flowcharts, UML diagrams, UI mockups, network diagrams, and more with an intuitive drag-and-drop interface.
What is Diagram.codes?
Diagram.codes is a free online diagramming and prototyping tool used by over 4 million people globally. It allows users to easily create a variety of diagrams including flowcharts, wireframes, UML diagrams, network diagrams, mind maps, and more. The intuitive drag-and-drop interface provides various shapes, connectors, and diagram templates to get started quickly.
Some key features of Diagram.codes include:
- Drag-and-drop diagram editor with an unlimited canvas
- Hundreds of professionally designed diagram shapes and icons
- Smart alignment guides, auto layout, grouping, and arranging
- Real-time collaboration allowing multiple people to edit diagrams together
- Export diagrams as images (PNG, JPG, SVG), PDF files, or share links
- Cross-platform web app that works on any device with a browser
- Secure cloud hosting and version control for diagrams with online accounts
- Third party integrations with tools like Google Drive, Trello, Confluence, and more
With an easy learning curve and completely free tier, Diagram.codes is designed to help teams and individuals visualize ideas and processes more efficiently. Its SVG-based editor provides a scalable vector format for creating high-quality diagrams that can be used across platforms and devices.
Diagram.codes Features
Features
- Drag-and-drop interface for easily creating diagrams
- Supports flowcharts, UML diagrams, UI mockups, network diagrams, etc
- Large library of shapes and connectors
- Real-time collaboration for working together on diagrams
- Import/export diagrams as images or PDF files
- Intuitive editing tools for styling and arranging diagram elements
- Share and embed diagrams through links
- Dark mode support
- Keyboard shortcuts for efficient diagramming
- Cross-platform - works on desktop and mobile browsers
Pricing
- Freemium
Pros
Free to use with no limits
Very easy to learn and use
Good for both simple and complex diagrams
Collaboration feature is handy for teams
Export options allow saving diagrams in different formats
Many diagram types to choose from
Dark mode looks great
Works on any device with a browser
Cons
Lacks some advanced features of paid alternatives
Collaboration could be better integrated
No offline access or desktop/mobile apps
Limited styling options compared to some competitors
No built-in image library
Can be slow with very large diagrams
Official Links
Reviews & Ratings
Login to ReviewThe Best Diagram.codes Alternatives
View all Diagram.codes alternatives with detailed comparison →
Top Development and Diagramming and other similar apps like Diagram.codes
Here are some alternatives to Diagram.codes:
Suggest an alternative ❐
Microsoft Office Visio
Microsoft Office Visio is diagramming and vector graphics software developed by Microsoft. It is used to create a wide variety of business diagrams and visualizations including flowcharts, organizational charts, network diagrams, workflows, floorplans, and more.Key features of Visio include:Hundreds of professionally-designed templates for quick diagram creationIntuitive drag-and-drop interface to easily...
Draw.io
draw.io is a feature-rich diagramming and flowchart software that runs in your web browser. As a freemium tool, draw.io offers a free basic version as well as paid plans with more functionality for professionals and teams.With an intuitive drag-and-drop interface and built-in shape libraries, draw.io makes it easy for anyone...
Lucidchart
Lucidchart is a cloud-based diagramming application that allows users to collaborate and share diagrams in real time. It is used by over 30 million users and integrates with popular applications like Google Workspace, Microsoft Office 365, Confluence, and Jira.With an intuitive drag-and-drop interface, Lucidchart makes it easy for anyone to...
Flowgorithm
Flowgorithm is a free software application designed to teach the fundamentals of programming logic and algorithms. It uses flowcharts and pseudocode to allow users to visualize the structure and flow of an algorithm before converting it into actual code.Some key features of Flowgorithm include:Drag-and-drop interface to create flowcharts showing the...
OmniGraffle
OmniGraffle is a powerful, versatile diagramming application developed by The Omni Group for macOS and iOS. First released in 2001, OmniGraffle enables users to create a wide range of diagrams, charts, illustrations, and graphic documents.With an intuitive and flexible interface, OmniGraffle makes it easy to quickly map out concepts, ideas,...
PlantUML
PlantUML is an open-source tool used for rapidly creating UML diagrams from a plain text language. It supports all standard UML diagrams like use case diagrams, component diagrams, class diagrams, sequence diagrams, state diagrams, activity diagrams, etc. The main goal of PlantUML is to provide a simple and efficient way...
Google Drawings
Google Drawings is a free online diagramming and charting tool offered by Google as part of its Google Workspace productivity suite. It allows users to create flowcharts, organizational charts, mind maps, concept maps, site maps, and other types of diagrams.Some key features of Google Drawings include:Intuitive drag-and-drop interface for easily...
YEd Graph Editor
yEd Graph Editor is a free, powerful desktop application for Windows, macOS and Linux that can be used to quickly and easily create diagrams. It supports a wide range of diagram types including flowcharts, network diagrams, UML diagrams, BPMN diagrams, mind maps, organization charts, and more.Some key features of yEd...
LibreOffice - Draw
LibreOffice Draw is a vector graphics editor included in the open source LibreOffice software suite. It allows users to create a wide variety of graphical images including diagrams, flowcharts, organizational charts, network layouts, floor plans, and more.As an open source alternative to Microsoft Visio, LibreOffice Draw provides many similar features...
TouchDraw
TouchDraw is a vector graphics and diagramming app made specifically for touchscreen devices like iPads, Android tablets, and Windows touchscreen PCs. It provides an intuitive touch-based interface for creating all kinds of graphics and diagrams on the go.Some key features of TouchDraw include:Vector drawing tools like paths, shapes, text, connectors...
SQL Developer Data Modeler
SQL Developer Data Modeler is a free, graphical tool that helps developers design, model, generate, and manage complex relational databases. It provides a visual interface and productivity features to model your databases quickly and generate DDL scripts to create the database schema objects.Key features include:Visual data model diagrams with entities,...
SequenceDiagram.org
SequenceDiagram.org is a free online application that allows users to easily create UML sequence diagrams. Sequence diagrams are a graphical way to visualize interactions over time in a software system. They show objects, represented by boxes at the top, with arrows representing messages passed between them.Some key features of SequenceDiagram.org:Intuitive...
Tableaunoir
tableaunoir is an open-source virtual whiteboard software application designed for online brainstorming, collaboration, and workshop sessions. With tableaunoir, teams can create virtual whiteboards to sketch out ideas, map out processes, plan projects, and more. Some key features of tableaunoir include:Real-time collaboration - Multiple users can edit the canvas at the...
TreeSheets
TreeSheets is a free, open source data organizer that allows you to structure, analyze, and visualize information in a flexible, tree-like format. Unlike traditional hierarchical outliners that use a parent-child structure, TreeSheets uses a free-form, zoomable sheet divided into cells that can contain text, images, links, and more.Some key features...
Gaphor
Gaphor is an open-source modeling tool used to create UML and SysML diagrams. Some of the key features of Gaphor include:Intuitive graphical user interface for easy diagrammingSupport for all 14 types of UML diagrams like use case diagrams, class diagrams, sequence diagrams, state machines, activity diagrams etc.Additional support for SysML...
Draft.io
Draft.io is a cloud-based collaborative writing and editing platform for teams. It allows multiple people to work on the same documents in real-time, while tracking all changes made by each author.Some key features of Draft.io include:Real-time co-editing - Authors can see edits from others appearing live as they typeCommenting tools...
PowerDraw
PowerDraw is 2D CAD software used to create engineering drawings, schematics, plans, and technical illustrations. It includes a wide range of drafting and design tools for technical documentation.Key features of PowerDraw:Intuitive user interface optimized for 2D draftingAdvanced drawing, editing, and annotation toolsReusable symbol libraries for electrical, hydraulic, pneumatic, HVAC, and...
Structurizr
Structurizr is a documentation tool used by software architects and developers to visualize, document, and explore their software architecture. It supports the C4 model for visualizing software architecture at different abstraction levels, allowing architects to create Context, Container, Component and Code diagrams.Key features of Structurizr include:Intuitive user interface for creating...
TikZiT
TikZiT is an open-source vector graphics editor designed specifically for creating illustrations and diagrams using TikZ - a domain-specific language for programmatic graphics embedded within LaTeX. TikZiT provides a graphical user interface that allows users to create TikZ graphics intuitively without having to learn TikZ syntax.Some key features of TikZiT...
Wireflow
Wireflow is a web-based wireframing and mockup tool used to create prototypes and specs for website and app designs. It provides an intuitive drag and drop editor that allows designers and developers to quickly layout pages and interfaces before development begins.With Wireflow, you can easily add common UI elements like...
Org Chart Designer Pro
Org Chart Designer Pro is comprehensive software for designing visual organizational charts for companies and teams. With an intuitive drag-and-drop interface, users can create professional org charts in just minutes without any prior experience.Key features include:Drag-and-drop org chart creator with ready-made chart templatesOrg chart types like hierarchy, matrix, flat, photo,...
WireframePro
WireframePro is a user-friendly wireframing and prototyping application for creating wireframes, mockups, and prototypes of websites, mobile apps, and other software interfaces. It is designed specifically for UX designers, product managers, developers, and other professionals involved in the design process.With an intuitive drag-and-drop editor, WireframePro allows you to easily map...
DroidDia
DroidDia is an open-source diagramming and prototyping application designed for Android devices. It provides users with the tools to create a variety of diagrams and charts such as flowcharts, UML diagrams, mockups, mind maps, and more directly on their phones or tablets.Some key features of DroidDia include:Intuitive and easy-to-use interfaceDrag-and-drop...
CDRViewer 3
CDRViewer 3 is a free, open-source application for working with telephone call detail records (CDRs) and call logs. It supports importing and analyzing CDR files from over 45 different private branch exchange (PBX) and voice logging systems including Asterisk, Avaya, Cisco, Panasonic, and more.With CDRViewer you can easily view, search,...
Graphesent Anim
Graphesent Anim is a feature-rich 2D animation software solution designed specifically for vector animation. It provides a complete workflow for creating stunning frame-by-frame and tween animations with an intuitive and easy-to-use interface.Key features include:Vector drawing tools for shape creation and editingOnion skinning for referencing previous framesPowerful tweening engine for automatic...
SimpleDiagrams
SimpleDiagrams is an online diagramming and flowchart software designed to help users quickly create a wide variety of diagrams for business, technical, educational, and personal uses. With its easy-to-use drag-and-drop interface, SimpleDiagrams allows anyone to create professional-looking diagrams such as flowcharts, wireframes, UML diagrams, network diagrams, mind maps, org charts,...
Syngraph.me
Syngraph.me is a free online mind mapping and brainstorming application. It provides a flexible canvas for users to visually organize ideas, concepts, and information. With an intuitive drag-and-drop interface, Syngraph.me makes it easy for anyone to create colorful and dynamic maps without the need for artistic skill or design expertise.Some...
CircuitBee
CircuitBee is an free and open-source web-based circuit design and simulation software. It provides an intuitive graphical user interface that allows users to easily create, edit, simulate, and analyze both analog and digital circuits without installing any additional software.Some key features of CircuitBee include:Intuitive drag-and-drop interface for designing circuitsExtensive component...
DrawSCH
DrawSCH is an open source schematic capture and printed circuit board design application. It is targeted at electrical engineers and designed to allow users to create schematic diagrams, printed circuit board artwork, and generate manufacturing output files.Some key features of DrawSCH include:Intuitive graphical user interface for schematic captureSupport for creating...
VSDConverter
VSDConverter is a free, easy-to-use application for converting Microsoft Visio (VSD) files to various other formats like PDF, JPG, PNG, SVG, HTML and more. It provides a simple and convenient way to open, view and edit Visio diagrams without needing to have Microsoft Visio installed.Some key features of VSDConverter include:Converts...
