Startup
Bolt (StackBlitz)
Build websites, apps and prototypes by chatting with AI
Bolt is a chat-based AI tool for building websites, apps and prototypes, with Bolt Cloud providing hosting, databases, authentication and integrations. Its Bolt Agent (Standard and Max tiers) automatically picks a model per task and tests, refactors and iterates to reduce errors.
Their open-source work
TypeScript · ≈20k stars · MIT
stackblitz-labs/bolt.diy
Prompt, run, edit and deploy full-stack web apps using any LLM
Maintained by stackblitz-labs
In research (1)
Oct 26, 2026 · An app-builder product whose iterative user-revision workflow this benchmark models.
Neighbours in the directory
San Francisco, CA · Est. 2023
Devin, the AI software engineer, and the Windsurf IDE.
Cognition builds Devin, an autonomous AI software engineer that plans and executes engineering tasks end-to-end, and acquired the Windsurf agentic IDE in 2025. One of the defining startups of the coding-agent wave.
~$10.2B valuation (Sep 2025)
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.
Sources
Verified Oct 29, 2026