Free Forever · No Ads · No Account · No Login
Master CS Level Up.
The interactive CS platform built for engineers who want to understand, not just memorize. Live canvas visualizations, clean code, and 200+ interview problems — all free, forever.
7Tracks
70+Topics
200+Questions
0Cost
Used by engineers preparing for
Google
Amazon
Microsoft
Flipkart
Razorpay
Swiggy
+ more
Explore Topics
7 learning tracks
Core Curriculum
Data Structures & Algorithms
ArraysTrees
GraphsDP
SortingBig-O
Live canvas animations for every data structure. Master the concepts interviewers actually test — from arrays to dynamic programming — with visual intuition baked in.
Language Guide
Python Foundations
OOPDecorators
GeneratorsLibraries
Complete Python reference — magic methods, decorators, comprehensions, async, and DSA patterns in Python. From beginner to interview-ready.
Architecture
System Design
ScalingCachingQueuesAPIs
Load balancing, caching, microservices, and distributed systems — plus Django, Flask, and FastAPI framework guides for building production backends.
Data Layer
Database Systems
SQLPostgreSQLMongoDBRedis
RDBMS and NoSQL in one hub ◆ compare SQL, document, key-value, and graph databases with deep guides and interview-ready patterns.
Ship & Operate
DevOps Hub
GitDockerCI/CDK8s
Version control, containers, pipelines, Kubernetes, monitoring, and infrastructure basics ◆ everything you need to ship and run software reliably.
Deep Dive
AI / ML Explained
MLDeep Learning
NLPTransformersRL
Machine learning, deep learning, NLP, computer vision, and RL ◆ clear analogies, real math, no fluff. For engineers who want to truly understand modern AI.
Interview Prep
Interview Q&A Hub
FAANGStartup
DSASQLOOP
200+ curated questions across DSA, Python, OOP, SQL, and AI/ML ◆ tagged for FAANG and startups. Progress tracked in your browser. Free, no login.
How TechForge Works
01
Choose Your Path
Pick from 7 tracks ◆ DSA, Python, System Design, Databases, DevOps, AI/ML, or Interview Prep. Each is self-contained, so you start exactly where you need to.
02
Watch It Animate
Every algorithm and data structure comes with a live Canvas 2D visualization ◆ see exactly how it works, step by step, in real time.
03
Study the Code
Clean, optimized Python implementations with Big-O analysis, edge cases, and detailed inline comments. No magic, no hand-waving.
04
Practice & Track
Solve 200+ curated problems tagged for FAANG and startups. Check them off ◆ progress saves to your browser. No account ever needed.
Why TechForge
Vanilla JS
Zero Dependencies
All visualizations use the native Canvas 2D API ◆ no heavy libraries, no bloat. Fast, smooth animations on any device, even on mobile data.
FAANG + Startups
Company-Tagged Problems
Every practice problem is tagged PBC (Google, Amazon, Meta) or Startup (Swiggy, Razorpay, CRED) so you focus on what matters for your target company.
Privacy First
Local Progress Tracking
Mark problems as done and they stay checked. Progress lives in your browser's localStorage ◆ no account, no login, no data ever leaves your device.