20+ Free UML, Flowchart, Network & Architecture Diagram Templates
Class Diagram
Our easy class diagram template for software architects and developers allows you to create excellent UML class diagrams. Easily map object-oriented relationships, visualize system architecture, and record class characteristics and methods—all while using elegant, standardized UML notation to explain your design to stakeholders and team members.
Object Diagram
Create detailed object diagrams using our user-friendly template for software developers and system architects. This customized UML modeling tool visualizes object connections, properties, and interactions in your system design, making complicated systems easier to comprehend and apply. Begin mapping your object-oriented ideas more efficiently today!
Component Diagram
Use our Component Diagram template to view and record your software's building elements. You may easily adjust connections, interfaces, and dependencies to create a full architectural plan that improves communication across development teams. Begin mapping your system components for better design decisions now!
Deployment Diagram
Master your software deployment plan with our complete deployment diagram template, which is meant to visualize system infrastructure and component distribution. Customize nodes, artifacts, and communication paths to efficiently map your physical architecture and improve your deployment environment. Begin creating clearer, more efficient deployment models now!
Package Diagram
Streamline your software design process with our complete Package Diagram template, which is ideal for visualizing component hierarchy and dependencies in complex systems. Customize the hierarchical structure to better describe your system architecture, improve team communication, and simplify complicated software designs using this key UML modeling tool.
Free ER Diagram (ERD) Template for Database Design
Free entity relationship diagram template with entities, attributes, and crow's foot relationships ready to edit. Design database schemas visually.
Free Use Case Diagram Template for UML System Design (2026)
Free UML use case diagram template for 2026. Map actors, system boundaries, and interactions in minutes. Editable online with AFFiNE, no signup.
Free Sequence Diagram Template (UML) — Draw Online
Free UML sequence diagram template with lifelines, messages, and activation bars ready to edit. Map API calls and system interactions on an infinite canvas.
Free Activity Diagram Template for UML Workflows (2026)
Free UML activity diagram template for 2026. Model workflows, decisions, swimlanes, and parallel branches in minutes. Editable online with AFFiNE, no signup.
Free State Diagram Template for UML Behavior Modeling (2026)
Free UML state diagram template for 2026. Model object lifecycles, transitions, and events in minutes. Editable online with AFFiNE, no signup.
Free UML Communication Diagram Template (Objects, 2026)
Free UML communication diagram template for 2026. Model object interactions with numbered messages and links in minutes. Editable online with AFFiNE, no signup.
Interaction Overview Diagram
This customisable UML template allows you to create comprehensive Interaction Overview Diagrams that successfully represent complicated system interactions and procedures. Combine activity diagrams and interaction diagrams to represent complex system behaviors, making it easier to understand and record high-level processes while preserving precise component relationships.
Data Flow Diagram
Transform your system analysis with our complete data flow diagram template, which visualizes information flow between processes, external entities, and data storage. Customize this DFD template to represent your individual business processes, specify system boundaries, and express complicated workflows clearly and precisely.
Free BPMN Diagram Template with Core Symbols
Free BPMN 2.0 diagram template with events, tasks, gateways, and swimlanes ready to edit. Map business processes your whole team can read.
Venn Diagram
Enhance your research with our customized Venn Diagram template, which is ideal for visually displaying correlations between several types of data. Identify overlaps, similarities, and distinctions between concepts while expressing complicated information in a straightforward and intuitive manner. Transform your comparative analysis now!
Team Charter Template
Create a detailed team charter that clearly defines your project team's expectations, roles, and goals. This customizable form helps team members align on common values, communication protocols, and decision-making procedures, resulting in better cooperation and productivity. Begin creating stronger team foundations now!
Free Organizational Chart Template — Editable Org Charts
Free org chart template with editable boxes and reporting lines. Map teams, roles, and departments on an infinite canvas that grows with the company.
Floor Plan
Discover our full Floor Plan template, a customized design tool that allows you to envision and improve your living or working environment. Easily adjust room proportions, furniture placement, and layout choices to create the ideal spatial arrangement for your unique requirements. Transform your interior design process now!
Azure Data Flow Template
Streamline your data transformation procedures with our complete Azure Data Flow template, which is intended for effective ETL operations in Azure Data Factory. Customize data pipelines, perform sophisticated transformations, and expedite analytics projects with this ready-to-deploy solution that grows with your data requirements. Begin streamlining your data workflows today!
Fishbone diagram template
With this customisable Fishbone diagram template, you can streamline your problem-solving process and conduct efficient root cause analysis. Using this easy cause and effect analysis tool, teams can identify and categorize contributing elements to complicated challenges, allowing them to more effectively find solutions and execute targeted changes.
Timeline Template
Transform your project planning with our customized timeline template, which helps you see deadlines, track milestones, and manage project schedules successfully. This timeline template is easily adaptable to projects of any size or complexity, resulting in better communication and enhanced project outcomes for your team.
Pedigree Diagram
Make a detailed pedigree diagram that clearly shows family links, inherited features, and ancestral connections in an orderly, visual way. This customisable genealogy application allows you to follow genetic trends and create a complete family history while making complex lineage information easy to grasp. Begin capturing your family's unique story now!
Diagram Templates
Some ideas are far easier to show than to write. This collection gathers AFFiNE's free diagram templates, from flowcharts and mind maps to org charts, timelines, and concept maps, so you can map a process, structure, or idea visually instead of describing it in paragraphs.
Every diagram here is built for AFFiNE's Edgeless canvas: duplicate a template, drag and connect nodes on an infinite whiteboard, and keep related notes in a linked Page doc. Your diagrams stay editable and shareable across desktop and phone.
Browse the diagram types below and start mapping.
FAQ
What can I make with these diagram templates?
This collection covers common visual diagrams, including flowcharts, mind maps, concept maps, org charts, and timelines. Each one gives you a starting structure you can adapt on AFFiNE's Edgeless canvas.
Are these diagram templates free?
Yes. Every diagram template is free to duplicate into your AFFiNE workspace and customize. Preview the layout first, then edit nodes, labels, and connections.
Do I need design skills to use them?
No. Each template provides the structure, so you just edit text and drag nodes to fit your content. The Edgeless canvas makes rearranging and connecting elements simple.