Deno vs Bun
Deno is the secure-by-default TypeScript runtime. Bun is the all-in-one JavaScript runtime with a bundler and test runner. Deno wins for security and the standard library; Bun wins for the npm-compatibility and the all-in-one toolchain. Pick Deno for security-first TS apps; pick Bun for npm-flavored full-stack JS apps.
Side-by-side data
| Project | GitHub Slowing | GitHub Slowing |
|---|---|---|
| PopScore | 0/100 | 0/100 |
| Stars | 96.3k | 76.4k |
| 7d ΔStar | 0 | 0 |
| Forks | 5.4k | 2.9k |
| Open Issues | 980 | 1.4k |
| Health | Slowing·34 | Slowing·35 |
| Maturity | Enterprise·80 | Enterprise·80 |
| Language | Rust | Zig |
| License | MIT | MIT |
| Created | 2018-05-15 | 2022-04-14 |
| Last push | 13d ago | 8d ago |
| Tldr (AI) | Secure-by-default TypeScript runtime built on V8 + Rust, with built-in tooling and web-standard APIs. | — |
Visual diff
Frequently asked questions
Which is better, deno or bun?
Today the two are essentially tied on PopScore (0 vs 0). Both deno and bun are healthy, actively maintained, and worth evaluating on fit rather than headline score.
How is PopScore calculated?
PopScore is a 0-100 score that combines star velocity (35%), fork engagement (20%), activity (25%), mentions (10%), and a noise penalty (10%). See the full formula. The score refreshes several times per day.
How fresh is this comparison?
All numbers are from the most recent sync run (within the last 6 hours). Project metadata (license, language, created date) is from GitHub directly. The verdict is a snapshot — check the live page for the latest.
Can I add a third project to this comparison?
Yes. From any project page, click "Add to compare" to build a 2-5 project list (saved in your browser, no signup). Once you have 2+, the /compare page renders a custom table + radar.
More comparisons
Build your own compare
Add up to 5 projects to a private compare list. Your list lives in localStorage — no signup, no tracking. Try it from any project page.
Open compare list