Shantanu Mangalkar
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Projects.

An archive of software applications, libraries, and open-source packages I've designed, optimized, or contributed to.

KisanBandhu RAG Bot

KisanBandhu RAG Bot

AI-powered, multilingual voice & chat agricultural assistant delivering ICAR-grounded farming guidance using Spring AI, Supabase PostgreSQL, and pgvector semantic search.

#java#spring boot#spring ai#supabase#pgvector#postgresql#llms#rag
Kisan Bandhu: Contract Farming Platform

Kisan Bandhu: Contract Farming Platform

Full-stack contract farming platform with smart contract matching, RAG model farming guidance, real-time price updates, weather forecasts, and secure payment integrations.

#java#spring boot#react#mysql#rest apis#jwt#rag
SurakshaNet

SurakshaNet

A smart CCTV mapping platform for police that enables camera registration, admin verification, and location-based discovery of verified CCTV cameras. Features interactive mapping, camera coverage details, owner management, and a future-ready 3D digital twin for surveillance analysis.

#java#spring boot#postgresql#postgis#react#geospatial#rest apis
ChitChat: Realtime Chat Application

ChitChat: Realtime Chat Application

Real-time room-based chat application featuring End-to-End Encryption (E2EE), JWT authentication, WebSocket sync, and a room self-destruct feature.

#java#spring boot#react#mysql#websockets#stomp#jwt