Rishab Dugar

Gyanshala — Jain learning, as a game

A free, ad-free suite of learning apps teaching Terapanth history, the lineage of Acharyas and tirtha geography to children aged 4–13 — a tradition taught orally in classrooms, now reachable by any family anywhere at zero cost.

Every app is a single dependency-free HTML file: no build pipeline, no backend, no per-user cost. Bilingual Hindi/English quizzes and matching games, a global error-recovery boundary, muted-by-default Web Audio, and a WhatsApp-native sharing loop. A production freeze was traced with CDP heap and listener profiling across 1,000+ automated interaction cycles and fixed.

Solo-designed — architecture, UX and content — and iterated from real parent and child feedback into stable public releases. Live and in use.

GenAI Stock Analysis Agent

A multi-agent research desk: cross-validates 1,000+ daily data points across five APIs with integrity checkpoints, holding >99.7% data accuracy, and turns an afternoon of report writing into under five minutes.

AI Invoice & Commerce Platform

Full-stack commerce system with LLM structured extraction, voice-to-invoice speech-to-text and ECDSA digital signatures. Thread-safe in-memory caching cut disk I/O ~95%; it runs on a self-hosted Linux homelab in a hybrid cloud setup.

Multi-Agent Recommendation Orchestrator

Several specialised agents behind one question — Reddit and web retrieval, advanced retrievers and RAG, arbitrated into a single recommendation instead of five competing ones.

SLM Fine-Tuning Pipeline

Fine-tuned LLaMA 3 with 4-bit PEFT-LoRA on a free Colab tier, then published the whole workflow — evaluation metrics, benchmarks and the failure modes people normally leave out of the tutorial.

Voice-to-Voice Multi-LLM Bot

Real-time spoken dialogue with a switchable model behind it — Whisper in, any of several LLMs in the middle, speech back out. Built to compare backends on the same conversation rather than on a benchmark.

UAV for Precision Agriculture

Simulated spraying drone with coverage path planning at 84% crop coverage precision, using U-Net and R2U-Net semantic segmentation to find land boundaries on its own.

GemSign — Signed Invoices

PIN-based TOML authentication at sub-500 ms, and cloud PPTX→PDF conversion of client decks in about three seconds, synced straight back to Drive.

Green Leaf Gourmet

A full restaurant point-of-sale, shipped the awkward way on purpose: a single Windows EXE with a bundled JRE, so a restaurant with no IT desk can install it by double-clicking.

ChronoShell — this site, 1888 edition

A Victorian laboratory you can actually use: a working command shell inside the machine, 37 measured hotspots on a looping video plate, a journal that turns its own pages, and an assistant running tf-idf retrieval with a deterministic FAQ gate on Cloudflare Workers — no vector database anywhere.