TIA Portal is described as 'is the key to unlocking the full potential of Totally Integrated Automation (TIA). The pioneering engineering framework optimizes all planning, machine and process procedures and offers a standardized and integrated operating concept' and is an app in the Development category. There are seven alternatives to TIA Portal for Windows, Linux and Mac. The best alternative is CODESYS. It's not free, so if you're looking for a free alternative, you could try Outseal or ClassicLadder. Other great apps like TIA Portal are CX-One (Paid), LOGO! Soft Comfort (Paid), Automgen (Paid) and RobotStudio (Paid).
CODESYS is the leading manufacturer-independent IEC 61131-3 automation software for engineering control systems. It is used to program many hundreds of different controllers, PLCs, PACs and other automation system, even via an Industry 4.0 interface.
LOGO! Soft Comfort is software for programming simple Siemens LOGO! PLCs. Programming is done in one of two graphical programming languages - FBD (Function Block Diagram) or LAD (Ladder Diagram). Simulation and online monitoring is available.
LOGO! Soft Comfort vs TIA Portal opinions
pros, cons and recent comments
Pico sized controller base in LOGO compared to larger scale integration of portal. Not even in the same market space.
Outseal PLC is an IDE in the form of Ladder Diagrams based on Arduino Board. This PLC has hardware that is open to the public, you can download and learn the electronic circuit freely and make yourself at home at an affordable price.
An open source project to have a free ladder and sequential (grafcet) programming software coded in C language (to be used for educational as PLC Simulator, training, in Software PLC on PC computers or embedded platforms, ...).