Diagram Template Gallery
Browse Mermaid, PlantUML, GraphViz, D2, and Excalidraw templates for flowcharts, UML, architecture diagrams, and visual workflows.
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Product Development
Comprehensive product development lifecycle management board
IoT Device Controller
SDL diagram for IoT device control system with sensor data processing and command handling
Transportation Routes
City transportation network showing metro lines and station connections
Transformation Milestone Track
Milestone track showing initiative themes, owners, and handoffs across six phases.
SaaS Three-Tier Platform
Core SaaS web stack with UI, service, cache, and persistent storage. Starter template grounded in the Three-layer Architecture D2 syntax pattern.
Marketing Campaign
Digital marketing campaign workflow management board
Network Protocol Handler
SDL diagram for network protocol handling with TCP/UDP connection management and packet processing
Molecule Structure
Chemical molecule structure showing atomic bonds and connections
Product Roadmap Timeline
Quarterly roadmap timeline with milestones, key deliverables, and status callouts.
SaaS Three-Tier Platform (Operations)
Core SaaS web stack with UI, service, cache, and persistent storage. Operations variant that adds authentication boundaries and observability telemetry capture.
Software Development
Agile software development workflow with kanban board
Taylor Series Expansion
Mathematical process for Taylor series expansion and approximation with LaTeX notation
Social Network Connections
Social network graph showing friend connections and community clusters
Customer Journey Spotlight
Experience spotlight linking onboarding, adoption, and advocacy touchpoints.
SaaS Three-Tier Platform (Enterprise)
Core SaaS web stack with UI, service, cache, and persistent storage. Enterprise variant that adds analytics export and backup lifecycle handling.
Multi-Region Enterprise
Complex multi-region AWS architecture with disaster recovery
Newton's Method Algorithm
Numerical analysis algorithm for finding roots using Newton-Raphson method with LaTeX formulas
Training Schedule
Employee training program schedule with modules, instructors, and timelines
Innovation Initiative Map
Core circle summarizing innovation vision with supporting pilots and rollout pillars.
Event Worker Pool Topology
Queue-based asynchronous processing with horizontally scaled workers. Starter template grounded in the Queue and Worker Pool D2 syntax pattern.
Serverless Architecture
AWS serverless architecture with Lambda, API Gateway, and DynamoDB
Quadratic Equation Solver
Algorithm flow for solving quadratic equations using the quadratic formula with AsciiMath notation
Feature Comparison
Product feature comparison matrix for different subscription tiers
Supply Chain Control Tower
Control tower layout aligning sourcing, manufacturing, logistics, and retail signals.
Event Worker Pool Topology (Operations)
Queue-based asynchronous processing with horizontally scaled workers. Operations variant that adds scheduled ingestion and dead-letter replay controls.
Basic Web Application
Simple AWS web application with EC2, RDS, and S3
E-commerce Order
Complete e-commerce order data structure with customer, products, shipping, and payment details
Budget Breakdown
Financial budget breakdown with categories, allocations, and quarterly distribution
Operations Collaboration Hub
Central operations hub linking marketing, product, success, and finance priorities.
Event Worker Pool Topology (Enterprise)
Queue-based asynchronous processing with horizontally scaled workers. Enterprise variant that adds capacity metrics and upstream throttling alerts.
Enterprise System
Complex enterprise architecture with multiple zones and junctions
Configuration Schema
Application configuration schema with database, server, logging, and environment settings
Organizational Chart
Company structure with departments, roles, and reporting hierarchy
Data Governance Maturity Pyramid
Pyramid showing data governance maturity from policy foundations to value programs.
Multi-Tenant Boundary References
Nested service boundaries with parent-reference dependencies. Starter template grounded in the Nested Boundaries with References D2 syntax pattern.
Microservices Architecture
Distributed microservices system with service groups
API Response Structure
REST API response structure with status, data payload, pagination, and error handling
Risk Assessment Matrix
Risk analysis matrix with probability, impact, and mitigation strategies
Leadership Capability Pyramid
Leadership pyramid spanning vision, influence, operational excellence, and culture.
Multi-Tenant Boundary References (Operations)
Nested service boundaries with parent-reference dependencies. Operations variant that adds additional internal service fan-out and authorization context flow.
Three-Tier Architecture
Simple three-tier web application architecture
Distributed Transaction Saga
Comprehensive C4 sequence diagram for distributed transaction with saga pattern
Project Timeline
Project phases with milestones and deliverables in block table format
Talent Acquisition Funnel
Recruiting funnel covering sourcing, screening, interviews, offers, and onboarding.
Multi-Tenant Boundary References (Enterprise)
Nested service boundaries with parent-reference dependencies. Enterprise variant that adds partner-feed ingress and outbound report integration.
Production and Efficiency
Comprehensive production output with efficiency rate tracking
Payment Transaction Sequence
Standard C4 sequence diagram for payment processing with conditional flows
Campus Building Layout
University campus layout with departments and facilities organized in clusters
Demand Generation Funnel
Five-stage marketing funnel outlining awareness to retention tactics for B2B demand gen.
Gateway-Centric Service Bundle
API gateway entrypoint with auth, billing, and notification services. Starter template grounded in the Gateway and Downstream Bundle D2 syntax pattern.