Best Bun alternatives in 2026

Looking for an alternative to Bun? Whether you've outgrown it, find the pricing steep, or just want to weigh your options, these are the strongest development & it alternatives in 2026 — ranked on pricing, features, and who each one fits best. Bun itself has a free tier, so we've flagged where each option is cheaper, simpler, or more specialized.

1
Modal
Best for: developers
Serverless compute for AI and data. A popular development it alternative to Bun with a genuinely usable free tier — free. Particularly strong for developers.
4.7FreeVisit
2
Temporal
Best for: developers
If Bun feels like overkill or over-budget, Temporal is a leaner option with a genuinely usable free tier. Durable execution platform. Pricing: free.
4.7FreeVisit
3
Deno
Best for: developers
Deno goes head-to-head with Bun on features with a genuinely usable free tier. Secure JS/TS runtime + edge deploy. Best suited to developers. Free – $20/mo.
4.6Free – $20/moVisit
4
Val Town
Best for: developers
A well-rated development it pick. Write and run code in the cloud. Val Town offers a free plan and starts at free – $10/mo, making it a credible Bun replacement.
4.5Free – $10/moVisit
5
E2B
Best for: developers
Secure code sandboxes for AI agents. A popular development it alternative to Bun with a genuinely usable free tier — free – $150/mo. Particularly strong for developers.
4.5Free – $150/moVisit
6
Browserbase
Best for: developers
If Bun feels like overkill or over-budget, Browserbase is a leaner option with a genuinely usable free tier. Headless browser infrastructure for AI. Pricing: free – $99/mo.
4.5Free – $99/moVisit
7
Portkey
Best for: developers
Portkey goes head-to-head with Bun on features with a genuinely usable free tier. AI gateway and observability for LLMs. Best suited to developers. Free – $49/mo.
4.5Free – $49/moVisit
8
Helicone
Best for: developers
A well-rated development it pick. Open-source observability for LLM apps. Helicone offers a free plan and starts at free – $20/seat/mo, making it a credible Bun replacement.
4.5Free – $20/seat/moVisit

Still considering Bun itself? Read our Bun review →

Frequently asked questions

What is the best Bun alternative?

Modal is our top-rated Bun alternative for 2026. Serverless compute for AI and data. Free.

Is there a free Bun alternative?

Yes — Modal, Temporal, Deno all offer a free tier you can start on without a credit card.

Why switch from Bun?

Common reasons are price, a simpler feature set, better fit for a specific use case, or platform support. Each tool above notes where it has an edge over Bun.