Hackathon Tech Stack Guide 2026: What to Use for Every Type of Project

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Pick the stack BEFORE the hackathon starts. Debating tech stack during the event wastes 2-4 hours that you can’t afford. Here’s what works for each project type in 2026.

Web App (Most Common – 70% of hackathon projects)

The 2026 Default Stack

Frontend: Next.js 14 (App Router) + Tailwind + shadcn/ui
Backend: Next.js API Routes (or FastAPI if heavy ML)
Database: Supabase (PostgreSQL + Auth + Storage)
AI: Claude/GPT API via Vercel AI SDK
Deploy: Vercel (auto-deploy from GitHub)
Setup time: 15 minutes with starter kit

Why this wins: Fastest setup, best DX, free hosting, beautiful UI from minute 1.

Alternative: Python-Heavy Projects

Frontend: Streamlit (fast) or Next.js (polished)
Backend: FastAPI + Python
Database: Supabase or SQLite
ML: scikit-learn / PyTorch / Hugging Face
Deploy: Railway (backend) + Vercel (frontend)
Setup time: 20 minutes

Mobile App

Cross-Platform (Fastest)

Framework: React Native (Expo)
Backend: Supabase (skip building your own)
UI: React Native Paper or NativeWind
Deploy: Expo Go (instant testing on physical phone)
Setup time: 10 minutes

Android Native (for phone-first hackathons like iQOO)

Language: Kotlin
UI: Jetpack Compose
On-device AI: TensorFlow Lite / Whisper / local LLM
Backend: Firebase or Supabase
Deploy: Direct APK install
Setup time: 30 minutes

AI/ML Project

LLM Integration: Claude API (best reasoning) or GPT-4o (fastest)
Vector DB: Pinecone or Supabase pgvector (for RAG)
Framework: LangChain or Strands Agents (for agents)
Frontend: Next.js + Vercel AI SDK (streaming built-in)
Deploy: Vercel + Railway
Setup time: 20 minutes

IoT/Hardware

Microcontroller: Raspberry Pi Pico W or ESP32
Sensors: DHT22 (temp), HC-SR04 (distance), MPU6050 (motion)
Communication: MQTT + WebSocket
Dashboard: Next.js + real-time charts (Recharts)
Cloud: Supabase (real-time subscriptions)
Setup time: 45 minutes (hardware assembly)

Blockchain/Web3

Chain: Base (Coinbase L2) or Polygon (low fees, fast)
Contracts: Solidity + Hardhat
Frontend: Next.js + wagmi/viem + RainbowKit
Wallet: Privy (embedded - users don't need MetaMask)
Deploy: Vercel
Setup time: 30 minutes

Decision Matrix

If your project needs… Use this
Quick beautiful UI Next.js + shadcn/ui
Real-time features Supabase (real-time subscriptions)
AI chatbot Vercel AI SDK + Claude/GPT
User auth Supabase Auth or Clerk
File uploads Supabase Storage or S3
Payments Razorpay (test mode – free)
Maps Google Maps API ($200 free/month)
On-device ML TensorFlow Lite or ONNX Runtime

The Rule

Use what you KNOW, not what’s trendy. A project built fast in a familiar stack beats a buggy project in a cool new framework.

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