Alternatives

Products that do what AI Sandbox with Kata, Firecracker, Cloud HV (E2B, Daytona Alternative) does

1RC
R-cade, a simple arcade game engine for Racket▲205
2020 · github.com
2
npm i -g hotcell▲97
Local sandboxes for AI agents on your Mac, Linux, bare metal
Aug 2026 · github.com
3WA
WorldOS – A fully customizable AI simulation sandbox game▲6
Jun 2026 · worldos.cc
4SW
Simple Webapp to Play with Open AI Transformer (Smaller Version)▲75
2019 · lm.sprinkleai.com
5HR
Hal9 – Roblox for AI▲27
2021 · hal9.ai
6MO
MarinaBox: Open-Source Sandbox Infra for AI Agents▲6
Hey everyone, We're excited to introduce MarinaBox, an open-source toolkit for creating isolated desktop/browser sandboxes tailored for AI agents. Over the past few months, we've worked on various projects involving: 1. AI agents interacting with computers (think Claude computer-use scenarios). 2. Browser automation for AI agents using tools like Playwright and Selenium. 3. Applications that need a live-session view to monitor AI agents' actions, with the ability for human-in-the-loop intervention. What we learned: All these scenarios share a common need for robust infrastructure. So,…
2024 · github.com
7OA
Orca – AI Game Engine▲9
2025 · github.com
8CS
Containarium – self-hosted sandbox for AI agents, MCP-native▲5
May 2026 · github.com
9RA
Rogue AI Dungeon, javacript bot scripting game▲17
2016 · bovard.github.io
10TS
Tarit – Self-host sandbox cloud and hypervisor for AI agents▲6
We have built Tarit as a hypervisor built from ground up for running AI agent and RL environments. It is based on rust-vmm and can be used as a replacement for firecracker. Firecracker was built to serve a different need of primarily serverless compute and hence does not have primitives like live snapshots without pausing the VM operations. We also provide a basic orchestrator that handles placement of the microVMs, creating clusters with HA, maintaining a warm pool of VMs, and takes care of setting up networking and monitoring. Our benchmarks on a metal instance shows an acquire VM from…
Jul 2026 · github.com
11SG
Simple Gaming AI▲11
2017 · github.com
12CT
Crown – The Flexible Game Engine▲20
2017 · github.com
13WB
We built a <60ms, open-source alternative to E2B using RustVMM and KVM▲7
Over the past few months, as we scaled our internal AI Agents, we hit a dead end: Running LLM-generated arbitrary code in Docker is basically running naked on security due to container escape risks. But using full traditional VMs takes minutes to boot and eats too much memory to support high-density concurrency. We loved the developer experience of SaaS sandboxes on the market, but they are closed-source, expensive, and have too high a barrier to entry for self-hosting. So, our team decided to build our own. After months of grinding, using RustVMM and KVM, we built a blazing-fast,…
Apr 2026 · github.com
14AR
Agent-run – Run a coding agent in a sandboxed environment▲8
Jul 2026 · github.com
15OS
Open-source Advance Wars-like game▲9
2024 · github.com
16AS
A sandboxed AI agent that can watch webpages without constant API calls▲6
It can also adapt by creating its own tools if its 60+ built in tools fall short. It runs in a debian docker container with chromium and you interact with it through the terminal. Watch it work through a VNC viewer
Apr 2026 · github.com
17AS
Azure-sandbox▲10
2016 · github.com
18TA
Termloop, a game engine for the terminal▲5
2015 · github.com
19K4
KrillClaw – 49KB AI agent runtime in Zig for $3 microcontrollers▲8
Feb 2026 · github.com
20VA
Veris – Agent sandboxes with simulated external services▲9
May 2026 · veris.ai
21PU
Permanent Underclass – Terminal game about AI acceleration (Rust)▲6
Feb 2026 · github.com
22RA
Run AI models on your PC instead of the cloud▲5
2023 · faircompute.com
23AA
AI Agent with access to GitHub and it's own cloud sandbox to edit files▲5
2023 · github.com
24FV
Firecracker VM automated setup wizard▲7
2023 · github.com

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