Entertron reintroduces the concept of FREE PLC programming software. As a company, Entertron was first to offer Free PLC programming software way back in 1984. Our competitors charge anywhere from $100 to $1500+ for PLC programming software. Some even charge a yearly maintenance / upgrade fee or a site / user license fee. If you are an OEM and you send the software to your customers, you must pay for multiple user licenses. Entertron is once again changing the way business is done.