circuit diagram is a free application for making electronic circuit diagrams and exporting them as images. design circuits online in your browser or using the desktop application.

explore digital circuits online with circuitverse. with our easy to use simulator interface, you will be building circuits in no time.

smartdraw is a unified visual app that combines diagramming, whiteboarding and data into one enterprise-friendly solution.

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.

stack overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

a computer science portal for geeks. it contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview questions.

interactive real-time circuit simulation and animated visualization inspired students and engineers to design 2.6 million circuits online and in mobile app.

tina is a powerful circuit simulator for analog, digital, mcu and mixed circuit simulation with integrated pcb design, running both offline and online.

simulation of circuits has never been easier, simulate and troubleshoot broken circuits online in a rich simulation environment, easy to learn.

multisim live is a free, online circuit simulator that includes spice software, which lets you create, learn and share circuits and electronics online.