Open Source Ecosystem

Open Source Libraries & Developer Tools

I believe world-class engineering is proven through transparent, reusable code. Here are utility libraries, CLI tools, and architecture packages I maintain for the developer community.

Chandan Chakrobortty — Open source software engineer and full-stack developer
Open Source Engineering
Maintaining scalable developer libraries, rate limiters & CLI tooling
Public Repos
nano-ratelimit
MIT • TypeScript

High-throughput distributed token-bucket rate limiting middleware for Node.js microservices backed by atomic Redis Lua scripts. Handles 100k+ req/sec with sub-millisecond overhead.

TypeScript Redis Lua Express / Fastify
View on GitHub
zerotrust-auth-core
MIT • Node.js

Lightweight mutual TLS (mTLS) certificate verification and role-based cryptographic JWT authorization framework for zero-trust microservice networks.

Node.js mTLS Cryptographic RBAC
View on GitHub
telemetry-stream-cli
MIT • Go / Golang

Real-time terminal visualizer and anomaly inspector for WebSocket telemetry streams. Streams latency percentiles and packet throughput directly inside your shell.

Go WebSockets CLI Tool
View on GitHub
pg-index-advisor
MIT • SQL / Python

PostgreSQL EXPLAIN plan analyzer that automatically flags unindexed foreign keys, slow sequential scans, and suggests optimal composite B-tree indexes.

PostgreSQL Python Query Optimizer
View on GitHub