Which applications use RTP

Which applications use RTP?
RTP is typically used when a media stream needs to be delivered in real time or received by a very large number of users simultaneously.
Voice over IP (VoIP) relies on RTP for media transport. They typically use SIP to initiate and control calls and SRTP to encrypt calls. Some example VoIP servers that use RTP are Asterisk, 3CX, and other PBX software.
Most Internet-based audio and video conferencing services use RTP. These services typically use RTP as the underlying media transport method and add convenience functions and standards on top of it. Some examples include Microsoft Teams, Apple FaceTime and WhatsApp. Zoom meetings use an approximate derivative of RTP.
The Real Time Streaming Protocol (RTSP) builds on RTP and can be used to send video between servers and clients. Video LAN is a popular real-time strategy server. Many security cameras also support sending video as RTSP to be saved by a video security server. Some live TV or streaming services implement RTSP because of its ease of broadcasting to many viewers.
Most modern on-demand video streaming services have transitioned from using RTP to using pre-caching and instead use Dynamic Adaptive Streaming over HTTP (DASH).
While most Internet-based audio and video conferencing services use real-time transport protocols, on-demand video streaming services have transitioned from RTP to dynamic adaptive streaming over HTTP.