# E2B

23 Hacker News commenters recommended E2B and 4 criticized it, November 2025 to November 2026. It was recommended in 9 of 13 months. It meets the Hacker Approved badge rule.

**Verdict:** Hosted sandboxes for running AI agent code, with snapshots, networking and integrations. Critics mention platform lock-in and a 24-hour session cap.

## Why people recommend it

- Strong security via hardware virtualization (3 comments): "I started with e2b because it has stronger security guarantees" ([source](https://news.ycombinator.com/item?id=48053530)) "E2B/Vercel are both great hardware virtualized sandboxes" ([source](https://news.ycombinator.com/item?id=47663871)) "e2b does firecracker and it's noticeably snappier" ([source](https://news.ycombinator.com/item?id=46478455))
- Fast startup and snappy performance (3 comments): "We've had positive early results on latency, but yeah … too early to tell where we end up on cost." ([source](https://news.ycombinator.com/item?id=47632711)) "e2b does firecracker and it's noticeably snappier" ([source](https://news.ycombinator.com/item?id=46478455)) "we spin up Sandboxes around 50-200ms at E2B" ([source](https://news.ycombinator.com/item?id=46876945))
- Snapshots, volumes, networking, integrations (2 comments): "E2B is up the stack and ships everything around VM like snapshots, networking, integrations." ([source](https://news.ycombinator.com/item?id=48688875)) "fortunately it supports volume, so we just create volumes for personal skills" ([source](https://news.ycombinator.com/item?id=47998078))
- Open source standard, used in production (2 comments): "has quickly become the open source standard for agentic workflow sandboxes" ([source](https://news.ycombinator.com/item?id=47978393)) "Factory, Nvidia, Perplexity and Manus are using E2B in production" ([source](https://news.ycombinator.com/item?id=46878179))

## What people warn about

- Unclear value over hosted VMs (2 comments): "Daytona and E2B are both great "sandbox" providers but don't really feel like VMs" ([source](https://news.ycombinator.com/item?id=47667611)) "I'm still not sure about the value they add on top of Cloud hosted VMs" ([source](https://news.ycombinator.com/item?id=46881423))
- Platform lock-in and session limits (2 comments): "Cloud sandboxes (E2B, Modal, etc.) work, but you're locked into their platform with limited customization" ([source](https://news.ycombinator.com/item?id=46251791)) "Self-hosted, no session limits, unlike E2B's 24-hour cap" ([source](https://news.ycombinator.com/item?id=46691072))

## Alternatives hackers recommend

- [Sprites](https://hackerapproved.com/p/sprites.md): 58 recommend
- [Deno Sandbox](https://hackerapproved.com/p/deno-sandbox.md): 21 recommend
- [Freestyle Sandboxes](https://hackerapproved.com/p/freestyle.md): 20 recommend
- [Agent37](https://hackerapproved.com/p/agent37.md): 15 recommend
- [Shellbox](https://hackerapproved.com/p/shellbox.md): 13 recommend

## Where to get it

- [Visit the official site](https://e2b.dev/)

## Cite as

Hacker Approved, "E2B", https://hackerapproved.com/p/e2b/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).