Based on the search results, "What up web" is not a clear question. However, there are some results related to WhatsApp Web, which is a browser-based PC client of WhatsApp messenger. WhatsApp Web allows users to send and receive WhatsApp messages online on their desktop PC or tablet. Users can log in to WhatsApp Web using their phone number and scan a QR code. There are also third-party applications available, such as Web Messenger for WhatsApp Web, which allow users to access the web version of WhatsApp and other messaging applications.