Sumit Kumar - Projects

A local, no-login tool for picking electives and a TA course without double-booking your own timetable.

Every semester at IIT Kharagpur comes with the same ritual: pick a handful of electives plus a TA course off a dense department subject list, and try to do it without accidentally scheduling two of them into the same timetable slot. GitHub's own description field for this repo, in my own words at the time, was just "I am lazy" — which is really the whole origin story. So I built a tool to do the conflict-checking for me.

A CLI tool to bulk-delete Vercel projects interactively, since Vercel's own CLI won't let you.

If you've ever spun up a Vercel project for every throwaway demo, side project, or "let me just test this real quick" idea, you know how this ends: dozens of dead projects cluttering your dashboard. Deleting them one at a time through the web UI is painful, and — somewhat bizarrely — the official Vercel CLI doesn't support bulk deletion at all. So vercel-delete exists to do the one thing Vercel itself won't let you do easily.

A desktop checklist-notes app for Linux, built with Tauri instead of another Electron app.

Most "sticky notes" apps for Linux are either abandoned GNOME extensions or an Electron app burning 300MB of RAM to show a text box. I wanted something native-feeling, checklist-first (not just freeform text), and light — so I built it on Tauri instead: a Rust-backed shell around a React frontend, producing an actual small native binary per platform rather than shipping a whole Chromium runtime.

A browser-based universal database manager for Postgres, MySQL, SQLite, and MongoDB — still a work in progress.

Still actively in progress — this is one I keep coming back to rather than something I'd call finished, so treat the feature list below as "working" rather than "polished."

A minimal, self-hosted collaborative code editor built on operational transformation — no database required.

Real-time collaborative editing is usually associated with either a SaaS product or a genuinely heavy CRDT implementation. Codepad takes a lighter path: it's built on operational transformation (OT), the same class of algorithm behind early Google Docs, and it's designed to be small enough to self-host without provisioning a database at all.

A Chrome extension that highlights CV and placement deadlines in IIT Kharagpur's ERP portal.

IIT Kharagpur's ERP placement portal buries CV submission deadlines in dense tables that are very easy to miss at a glance during placement season, when there are a dozen things due across different companies at once. This extension fixes that with color-coded visual highlighting directly on the portal page — no more scanning a wall of text to figure out what's due today versus next week.

Chat with your PDFs - and a brutal lesson in JavaScript PDF library dependency hell.

The assignment sounded simple: build a web app where you upload a PDF and chat with it. The AI finds answers in the document and cites the exact page number - basically a clone of Google's NotebookLM. It turned into a genuinely brutal lesson in JavaScript dependency hell. The app works, and works well, but the story here isn't the feature list - it's the fight to get it deployed at all.

A custom relational database engine with its own SQL parser and query executor.

"Let's build a database engine."

A reliable, TCP-like flow control protocol built from scratch over raw UDP.

TCP feels like magic until you're forced to rebuild a sliver of it yourself. That's exactly what our Networks Lab made us do: simulate a reliable message transmission protocol _over raw UDP_ - no TCP allowed anywhere in the stack. We called it KTPSocket, short for "Kharagpur TCP Socket," and the goal was to make an inherently unreliable channel behave like a reliable one.

A multi-user web app for managing Gram Panchayat administration, built for a DBMS course.

Every Database Management Systems Laboratory needs a mid-term group project, and ours was a Gram Panchayat Management System - a multi-user web app for running the administrative side of a Gram Panchayat (India's village-level local government body): session-based authentication, CRUD over multiple linked entities, and detailed reports pulled straight from the schema. You can see it live.

A CLI tool that scans a directory and writes out its structure as Markdown.

I was writing up documentation for a project and wanted a clean Markdown view of its folder structure to drop straight into a README. tree on Unix gets you 80% there, but it doesn't output Markdown and isn't very customizable - so instead of fighting sed/awk to reformat its output, I just wrote the tool I actually wanted, in Go.

A full-stack platform for teachers and students to manage classes, assignments, and lectures.

For our Software Engineering course, our team built the Online Classroom Management System (OCMS) from a blank repo - a platform where teachers and students manage classes, assignments, and lectures without juggling five different tools to do it.