All-in-one JavaScript runtime, bundler, and package manager
By Jarred Sumner
JavaScript developers need separate tools for runtime, bundling, transpiling, and package management — all slower than they should be.
Started 2021, released Bun 1.0 in September 2023. Raised $7M from investors. Going mainstream in 2025-2026.
Demonstrates that JavaScript tooling performance can be dramatically improved by rethinking from the ground up.
Make JavaScript the fastest and most productive language ecosystem by eliminating tooling friction.