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KiCAD MCP is a Model Context Protocol (MCP) implementation that enables Large Language Models (LLMs) like Claude to directly interact with KiCAD for printed circuit board design.

ZoneMinder is a free, open source Closed-circuit television software application developed for Linux which supports IP, USB and Analog cameras.

Polly is a .NET resilience and transient-fault-handling library that allows developers to express policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent and thread-safe manner. From version 6.0.1, Polly targets .NET Standard 1.1 and 2.0+.

Clojure resilience library for flexible retry, circuit breaker and rate limiter

A digital logic designer and circuit simulator.

A free, open source, online digital circuit/logic designer.

SumUp's design system for the web

XicTools: Xic graphical editor, WRspice circuit simulator, and accessories. for electronic design.

An efficient and feature complete Hystrix like Go implementation of the circuit breaker pattern.

MQT DDSIM - A Quantum Circuit Simulator Based on Decision Diagrams

Circuit IR Compilers and Tools

A schematic editor for VLSI/Asic/Analog custom designs, netlist backends for VHDL, Spice and Verilog. The tool is focused on hierarchy and parametric designs, to maximize circuit reuse.

KLayout Python library for integrated quantum circuit design.

MQT QMAP - A tool for Quantum Circuit Mapping written in C++

A browser-based SPICE circuit simulator

A fast stabilizer circuit library.

⚡️ A Compose-driven architecture for Kotlin and Android applications.

Highly integrated electronics design and printed circuit boards (PCBs) for the MATE ROV Competition. Attempt the impossible.

Lean circuit DSL

Circuit Artist is a digital circuit drawing and simulation game.

TypeScript-first fetch wrapper with configurable timeouts, retries, and circuit-breaker baked in.

A 100-day challenge exploring IoT and embedded systems using ESP32, ESP8266, and Raspberry Pi Pico with MicroPython. Each day covers a new sensor or module with complete code, circuit diagram, and explanation.

55nm CMOS Open Source PDK by ICsprout Integrated Circuit Co., Ltd.

AI-powered assistant for EasyEDA — generate schematics from natural language, browse LCSC components, design PCBs with custom DRC configurations, and get interactive circuit design help.

Circuit breaker for Laravel queue jobs

End-to-end AI short-video production pipeline. FastAPI orchestration + Spring Boot gateway with multi-model failover, circuit breaker, metering, and full-stack observability. AI quality gating: prompt anchoring, CLIP consistency, AV sync auto-rescue.

Circuit Framework — multi-agent LLM trading research system

Lightweight cross-platform RF circuit + electromagnetic simulator. DC, S-parameters, harmonic balance, loadpull. Also supports 2D and 3D layout and design and electromagnetic MoM, FEM, FDTD + thermal FEM.

CA-72: a synthesizer plug-in (VST3, CLAP, AU) for macOS, Windows and Linux, modelled from the circuit of a 1970s analogue synthesizer