Simten is an open-source hardware description language (HDL) built in TypeScript, allowing developers to describe, simulate, and synthesize digital circuits directly in the browser or via CLI. It integrates with the npm ecosystem for testbenches and supports Verilog output, making hardware design accessible to modern web and software developers.
Simten sits in PulseGate's Frameworks & SDKs category. Enabling developers to design, simulate, and test hardware circuits using TypeScript and modern web tools. Simten is an open-source project aimed at hardware developers and TypeScript programmers. The project is open source (Apache-2.0). It runs on the web and the command line.
Simten first shipped in 2026. The project is developed in the open on GitHub with 408 commits in the last 90 days. Across PulseGate's embedding index, Simten has few near neighbours, marking it as relatively distinct. Among its 7 catalogued features are TypeScript HDL, verilog synthesis, and browser simulation. It exposes integrations via an MCP server.
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Show HN: Simten – design hardware in TypeScript and simulate it in the browser discovered by the PulseGate indexer
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