DevJam Labs

Interactive Visual Labs

Explore software engineering concepts visually. Tweak parameters, execute modules, and reconcile state in real time.

💡 Labs vs. Projects:Interactive Labs are parameter-driven visual sandboxes that run entirely in the browser to demonstrate concepts dynamically. To explore complete, production-ready codebases with build scripts, architectural blueprints, and GitHub metrics, check out theProjects directory →
ActiveAI Engineering

Tokenizer Visualizer

Understand how BPE (Byte Pair Encoding) converts text into token IDs, visual offsets, and context window percentages for LLM ingestion.

TypeScriptReact 19Tailwind CSS
SourceInteractive Console
ActiveFrontend Mastery

React Rendering Visualizer

Visualize standard React component rendering flow, state synchronization, memoized nodes, and virtual DOM tree reconciliation.

React 19TypeScriptFramer Motion
SourceInteractive Console
In ProgressSystem Design

System Design Simulator

Simulate distributed client request flow, database replication lag, CDN caching, and rate limiting actions under heavy traffic load.

TypeScriptReactCanvas API
SourceInteractive Console
ActiveDevOps & CI/CD

CI/CD Pipeline Visualizer

Visualize continuous integration steps, including environment setup, dependencies caching, lint checks, unit tests, and production CD deployment flow.

GitHub ActionsDockerYAML
SourceInteractive Console
In ProgressDSA

Big-O Visualizer

Visualize execution time and space complexity growth scales O(1), O(log n), O(n), O(n log n), O(n^2), and O(2^n) dynamically with step limits.

ReactTypeScriptTailwind CSSCanvas API
SourceInteractive Console
In ProgressDSA

Array Playground

Step through and animate array manipulations, two-pointers traversal, prefix sums, and sliding window boundaries.

ReactTypeScriptFramer Motion
SourceInteractive Console
In ProgressDSA

Binary Tree Visualizer

Animate DFS traversals (inorder, preorder, postorder) and BFS level order scanning step-by-step on SVG-rendered trees.

ReactTypeScriptSVG API
SourceInteractive Console
In ProgressDSA

Graph Playground

Visualize grid-based searches representing island counts, adjacency expansions, and pathfinding tracking.

ReactTypeScriptCanvas API
SourceInteractive Console
In ProgressDSA

DP Visualizer

Compare recursive memoization trees vs. tabulated multi-dimensional grids to calculate subproblems overlap.

ReactTypeScriptFramer Motion
SourceInteractive Console
Active Playgrounds

Launch Lab Terminals

Featured Labs

Interactive. Practical. Hands-on.

View all labs →
AI LabBPE Algorithm

Tokenizer Visualizer

Visualize how text is tokenized across different models.

Model: GPT-4o Vocab•BPE split style
Frontend LabReconciliation

React Rendering Visualizer

Understand React rendering and component tree reconciliation.

ParentComponent
State: count=0
ChildA (Memo)
Static
ChildB
Props: parentCount
Grandchild
Renderer Log:Click buttons to trigger renders
Algorithm: Virtual DOM Diffing
System Design LabDistributed flow

System Design Simulator

Visualize real-world system designs step by step.

👤
User
LB
Web-1
Web-2
DB Cluster
Ready to simulate network requests
Topology: Round Robin LB
DevOps LabPipeline execution

CI/CD Pipeline Visualizer

Build and visualize deployment pipelines.

1
Source
2
Build
3
Test
4
Deploy
Idle. Click Run Pipeline.
Trigger: Push to main