Sandbox developer tools
Every listing tagged sandbox, A to Z: 7 tools across 1 category. Listed in alphabetical order, not ranked.
Buddy Sandboxes
Persistent Linux VM sandboxes for AI coding agents from Buddy: Ubuntu with passwordless sudo, Docker, SSH, a 50 GB disk that survives restarts, public HTTPS endpoints and snapshots, up to 12 vCPU and 24 GB of RAM, driven from a CLI, TypeScript SDK, REST API or MCP tool call. $0.0144 per vCPU-hour plus $0.0144 per GB of RAM an hour, billed by the minute.
Cloudflare Sandbox SDK
Open-source (Apache-2.0) SDK for per-user or per-task Linux sandboxes started from your Worker: each sandbox is a Durable Object plus a Container, a microVM with its own kernel and network, and @cloudflare/sandbox adds file streaming, S3 bucket mounts and directory backups to R2. Needs the $5 Workers Paid plan.
Daytona
Sandboxes for AI-generated code, each with its own kernel, filesystem and network: Linux, Windows, macOS and GPU machines built from OCI images or snapshots, with volumes, computer use and an MCP server, driven from SDKs for Python, TypeScript, Ruby, Go and Java. Runs on Daytona's cloud or your own compute. Pay per second, with $200 of free compute.
E2B
Open-source (Apache-2.0) cloud sandboxes for AI agents: each sandbox is a Firecracker microVM that resumes from a snapshot, driven from the Python or JavaScript SDK, with a Code Interpreter SDK for running model-written code. The runtime can be self-hosted on your own hardware. Hobby is free with a one-time $100 credit; Pro is $150 a month plus per-second usage.
Modal Sandboxes
Sandboxes on Modal's serverless cloud for running untrusted or LLM-written code, created from Python, JavaScript or Go: gVisor isolation, or a VM with its own Linux kernel when you need Docker or FUSE, plus GPUs, custom images, volumes, filesystem snapshots and runs of up to 24 hours. Billed per second; the Starter plan includes $30 of compute a month.
Runloop
Devboxes for AI agents: micro-VM sandboxes with a VM and a container as two layers of isolation, on arm64 or x86, with full Docker support, snapshots you can branch from, suspend and resume, and browser and computer use. Python and TypeScript SDKs (MIT). Free plan plus usage with a $50 trial credit; Pro is $250 a month; Enterprise deploys into your own AWS, GCP or Azure.
Vercel Sandbox
Firecracker microVM sandboxes on Vercel for running untrusted or agent-written code, from a JavaScript or Python SDK or the CLI: Node.js, Python and coding agents in the default image or your own OCI image, Docker inside, persistent sandboxes, snapshots and drives. CPU is billed only while active, with a free monthly quota on Hobby.