Bun vs Mailpit

Bun

Developer Tools

Develop, test, run, and bundle JavaScript & TypeScript projects.

Bun is an all-in-one JavaScript runtime, bundler, transpiler, and package manager — drop-in faster replacement for Node.

Founder

Jarred Sumner

Founded

2021

Team

11-50

Listing

Free (nofollow)

Listed

May 2026

Mailpit

Developer Tools

Email and SMTP testing tool for developers.

Mailpit is an OSS local SMTP server with a web UI for catching dev/staging emails. Built by a solo developer.

Founded

2022

Team

1-10

Listing

Free (nofollow)

Listed

May 2026