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The Indy Project is an open source group that maintains several active projects.
Indy offers client and server components for using internet protocols, such as TCP, UDP, echo, FTP, HTTP, Telnet, and many others. Indy also provides components for I/O handling, intercepts, SASL, UUE, MIME, XXE encoders, and others.
The RAD Studio CHM help of the Indy components is not provided when pressing the F1 button. However, RAD Studio provides a third-party help. Click Help > Third-Party Help > Indy Library Help to acces the Indy third-party offline help.