WhatsApp Plus is a modified app from the official WhatsApp, which includes new and additional features such as online hiding, preventing messages from being deleted,  changing the theme, scheduling messages, and customizing the appearance of the screen, etc. In fact, there are many versions of WhatsApp Plus, and each version has its own developer. You can see here all the versions of it made by foreign developers as well as Arab developers. You will be able to download any version of it via a direct link for free. Some of the popular apps in this category are: WhatsApp Gold, WhatsApp Blue, WhatsApp Red, OB WhatsApp, FM WhatsApp and others