Free tools

Free tools for industrial engineers

Small tools that answer one question well, and the open-source parts of Proxus. Use them on their own, in your own projects, without signing up.

Online tools

Work it out in the browser

Free · in the browser OEE calculator Availability, performance, quality and OEE from shift time, stops, ideal cycle time and counts, with the formula behind each one and an Excel template. Open

Open source

Take it into your own projects

Published on GitHub under open licences, including for commercial use. Issues and pull requests are welcome.

Apache-2.0 Industrial MCP server Lets Claude, Cursor, VS Code and other AI assistants read Modbus devices and OPC UA servers, read-only and with OPC UA security. Open GitHub
CC BY 4.0 Modbus register maps 15+ open register maps from 5 vendors, 12,661 registers: address, type, byte order, unit and scale, each with its source document. Open GitHub
Apache-2.0 · NuGet .NET Modbus and OPC UA drivers Native AOT drivers for .NET 10: Modbus TCP, RTU and ASCII, and an OPC UA client with security, subscriptions and history. Open GitHub

When a tool is not enough

Proxus collects every signal in the plant once, keeps the history, models it in a Unified Namespace and delivers it to dashboards, databases and AI, on your own servers.

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