CircuitLab

CircuitLab provides an in-browser toolset for online schematic capture and circuit simulation, enabling users to design, edit, and simulate analog and digital circuits without installation. It emphasizes an easy-to-learn schematic editor, SPICE-like modeling, and shareable circuit URLs for collaboration and learning.

Users build circuits using a browser-based schematic editor with Smart Wires for quick connections. Circuits are simulated in-browser with a proprietary engine supporting analog and digital, mixed-mode and frequency-domain analyses, arbitrary Laplace transfer functions, and plotting. Outputs include professional vector PDFs and exportable plots (PNG, EPS, SVG). It offers cross-window copy/paste of public circuits, rapid symbol creation, and programmable sources for rapid iteration. The platform emphasizes in-browser simulation, easy value entry, and presentation-quality schematics sharable via unique circuit URLs.

Who it’s for: Students, hobbyists, and professional engineers who need in-browser schematic capture and circuit simulation to design and analyze analog and digital systems before prototyping.

Mentions of pricing page, upgrades, and ongoing feature development imply active product development and user growth; references to professional use and community forums suggest traction and involvement from engineers and educators.