GNU Octave might be a bit more popular than Altium Designer. We know about 1 link to it since March 2021 and only 1 link to Altium Designer. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Check out Altium’s website (altium.com. A lot of free resources that might help. They also have a YouTube channel. Good luck. Source: about 1 year ago
As for Matlab, I think you'll be just fine with using GNU Octave. Source: about 2 years ago
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Autodesk EAGLE - Autodesk EAGLE is an electronic design automation (EDA) software.
Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.
EasyEDA - EasyEDA - Web-based EDA suite; runs in browser.
Scilab - Scilab Official Website. Enter your search in the box aboveAbout ScilabScilab is free and open source software for numerical . Thanks for downloading Scilab!