Here is a list of the online man pages for the stable version of GnuPG. The rendering to HTML is a bit crude right now but will be improved over time.

gpg(1)

The standard OpenPGP tool.

gpgv(1)

The specialized OpenPGP verification tool.

gpgsm(1)

The CMS/X.509 tool.

gpgtar(1)

The archiving tool.

gpgconf(1)

Tool to configure the system.

gpg-card(1)

Generic smartcard and Yubikey tool.

gpg-wks-client(1)

A client to manage the Web Key Directory.

dirmngr-client(1)

Control tool for the dirmngr.

gpg-agent(1)

Background process to take care of private keys.

scdaemon(1)

Background process to take care of smartcards.

dirmngr(8)

Background process to take care of network access.

gpg-wks-server(1)

A server to run the Web Key Service.

gpg-connect-agent(1)

Access the background processes.

watchgnupg(1)

Watch debug output.

gpg-check-pattern(1)

Helper to check passwords.

Here is a list of the online man pages for the current development version of GnuPG. The development versions will eventually lead to a new stable version 2.6.

gpg(1)

The standard OpenPGP tool.

gpgv(1)

The specialized OpenPGP verification tool.

gpgsm(1)

The CMS/X.509 tool.

gpgtar(1)

The archiving tool.

gpgconf(1)

Tool to configure the system.

gpg-card(1)

Generic smartcard and Yubikey tool.

gpg-wks-client(1)

A client to manage the Web Key Directory.

dirmngr-client(1)

Control tool for the dirmngr.

gpg-agent(1)

Background process to take care of private keys.

scdaemon(1)

Background process to take care of smartcards.

dirmngr(8)

Background process to take care of network access.

gpg-wks-server(1)

A server to run the Web Key Service.

gpg-connect-agent(1)

Access the background processes.

watchgnupg(1)

Watch debug output.

gpg-check-pattern(1)

Helper to check passwords.

gpg-mail-tube(1)

Encrypt mails in a pipeline.