Circuit Tree
Logisim
CircuitLab
QUCS
KiCad
BOOLR
gEDA Project
PyLab_Works
OnePatch
Circuit Tree is an automation engine that autonomously designs a circuit board design with given user inputs. Using Components define as proprietary models in its database it creates schematic, component placement and routing on the fly. This means that the automation engine auto selects various types of components for a circuit and knows where to place and route these components on board.
Circuit Tree design engine has been designed by engineers who have experience of more than 20 years designing all types of first time right designs.
OnePatch is multi-purpose software solution for e-commerce retailers who sell on multiple online selling platforms. With OnePatch, sellers have the solution to organise their product stock, manage their online orders, shipping and accounts all from one simple and effective system, saving valuable time and expanding business growth.
Circuit Tree
OnePatchLogisim - Logisim is an educational tool for designing and simulating digital logic circuits.
CircuitLab - Sketch, simulate, and share your circuits, entirely in your browser -- no install required.
QUCS - Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
BOOLR - Open-source digital logic simulator
gEDA Project - All about General Public License (GPL) and Electronic Design Automation (EDA) software tools