rust-cli/config-rs

A well-maintained fork of the dotenv crate

Cloudflare's Rust service foundations library.

Configuration Management for Python ⚙

Node.js Application Configuration

A simple, zero-dependencies library to parse environment variables into structs

Flexible Python configuration system. The last one you will ever need.

A Go library for parsing struct tags from environment variables.

Rust reflection, serialization, deserialization, pretty printing, etc. — the last proc macro you should need

Build & ship backends without writing any infrastructure files.