code-execution
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Daytona
Daytona builds programmatic, composable computers for AI agents. Its stateful sandboxes spin up in under 90 milliseconds, run untrusted AI-generated code in full isolation, and can be started, paused, or snapshotted on demand. Founded by Ivan Burazin and Vedran Jukic, the company pivoted from developer-environment management into agent-native infrastructure in 2025 and raised a $24M Series A led by FirstMark Capital in February 2026. Customers include LangChain, Writer, Turing, and SambaNova.
E2B
E2B is an open-source cloud runtime that gives AI agents secure, isolated environments to execute code and use real-world tools. Built on Firecracker microVMs that boot in under 200 milliseconds, E2B lets developers and enterprises spin up disposable Linux sandboxes where AI-generated code runs without touching production systems. Founded in 2023 by Czech engineers Vasek Mlejnsky and Tomas Valenta, the company raised a $21M Series A led by Insight Partners in July 2025 and reports adoption across roughly 88% of the Fortune 100, including Perplexity, Hugging Face, Groq and Manus.