Synopsys VCS 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
The last definition by Synopsys is generalized as: Open source software (OSS) is software that is distributed with its source code, making it available for use, modification, and distribution with its original rights. Source code is the part of software that most computer users don’t ever see; it’s the code computer programmers manipulate to control how a program or application behaves. - Source: dev.to / about 2 years ago
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
ModelSim - ModelSim-Altera Software
Autodesk EAGLE - Autodesk EAGLE is an electronic design automation (EDA) software.
Riviera-PRO - System Verilog, Verilog. VHDL, SystemC, HDL simulator targeting ASIC and large FPGA designs.
EasyEDA - EasyEDA - Web-based EDA suite; runs in browser.
Cadence Incisive - System Verilog, Verilog, VHDL, SystemC HDL Simulator for ASIC Design and Verification