StartupSan Francisco, CA · Est. 2025 · Y Combinator (Spring 2025)
Cua
Open drivers, cross-OS sandboxes and benchmarks for computer-use agents.
Cua (YC Spring 2025) builds infrastructure for computer-use agents. Cua Spaces is a desktop app that gives agents full desktops: macOS VMs built locally, or Linux images, on the user's own machines or cloud. Cua Driver lets agents inspect and operate native apps and browsers on macOS, Windows and Linux through a CLI, MCP or typed SDKs. The stack also includes Lume (macOS VMs), the Cua SDK and CLI for local sandboxes, CUA-S1 small models for computer-use decisions, and Cua Bench for simulated tasks. The repo is MIT-licensed, while the Spaces app is source-available under FSL-1.1-MIT.
People
Co-founder & CTO
Evals & benchmarks
Co-founder & CEO
Security & sandboxes
Neighbours in the directory
San Francisco, CA · Est. 2022
The de-facto standard toolkit for building LLM applications and agents.
LangChain makes the LangChain framework and LangGraph, the low-level orchestration standard for stateful, controllable agents, plus the LangSmith platform for tracing, evaluating and monitoring them in production.
~$75M raised
Prague, Czechia · Est. 2023
Open-source sandboxes for running AI-generated code.
E2B gives agents secure, isolated cloud micro-VMs to execute code and commands — the execution runtime layer of the harness, used by many coding and data-analysis agents.
Est. 2023
Elastic sandboxes for running AI-generated code.
Daytona provides secure, OCI-compatible sandbox 'computers' that spin up in under 90ms — with snapshots for persistent agent state. In 2026 it moved core development to a private codebase while continuing to run as a commercial platform.
Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Built on · 1
- Model Context ProtocolProject
Similar entries · 1
- KernelStartup
Sources
Verified Oct 29, 2026