Real-time chat applications are software tools that allow users to communicate instantly over the internet. These applications enable text, voice, and video messaging, making it easy for people to connect regardless of their location. Popular examples include WhatsApp, Slack, and Facebook Messenger. They often feature group chats, file sharing, and notifications to enhance user interaction. These applications rely on technologies like WebSockets and push notifications to ensure messages are delivered immediately. This instant communication is essential for both personal conversations and professional collaboration, allowing teams to work together efficiently and stay connected in real time.