- Ash - A Selenium client for Common Lisp
- Cerberus - This is an implementation of the Kerberos v5 authentication protocol in Common Lisp
- CL-DBUS - CL-DBUS aims to be an implementation of the popular D-BUS IPC/networking protocol
- CL-DTYPE - CL-DTYPE is a Common Lisp library implementing the DType networking protocol, introduced by MIT Media Labs
- cl-gopher - Gopher protocol library in Common Lisp
- cl-keycloak - A basic Common Lisp library to connect with Keycloak OIDC and request user info
- cl-libserialport - cl-libserialport is a Common Lisp CFFI interface to the sigrok libserialport library, a cross-platform, minimal, C library for interfacing with serial ports
- cl-netstrings - cl-netstrings is a tiny CL library for handling netstrings
- CL-PLUS-SSL - This library is a fork of SSL-CMUCL
- CL-S3 - CL-S3 is a Common Lisp library that implements a client interface to the Amazon S3 Web Service
- cl-sasl - cl-sasl is a client implementation of the Simple Authentication and Security Layer (SASL) networking protocol
- CL-TELNETD - CL-TELNETD is a CL telnet networking server
- clath - Clath is single sign-on middleware for Clack
- Cobstor - Cobstor is a tool and an API to seamlessly access legacy Cobol application files from Common Lisp
- cserial-port - cserial-port is a Common Lisp library for interacting with serial ports
- de.setf.amqp - de setf amqp is a native Common Lisp Advanced Message Queuing Protocol client
- dragons - A DNS client for Common Lisp
- fast-http - A fast HTTP request/response protocol parser for Common Lisp
- Firephp - Firephp is implementation of firephp protocol for Common Lisp
- ftp - Implementations of the File Transfer Protocol:
- glacier - Lightweight wrapper for making Mastodon bots
- IPMI - Intelligent Platform Management Interface
- KLMNEA - KLMNEA is a beginning of Common Lisp NMEA protocol parser
- LDAP - Lightweight Directory Access Protocol
- libgpg-error - libgpg-error is a small library with error codes and descriptions shared by most GnuPG related software
- monkeylib-atom - monkeylib-atom is an Atom syndication feed generator library
- NactivityPub - ActivityPub & ActivityStreams support library for Common Lisp
- NET.QUADIUM.LDIF - NET QUADIUM LDIF is an LDIF (LDAP Data Interchange Format) library for Common Lisp
- org-davep-dict - org-davep-dict is a Common Lisp networking protocol library for talking to a dict server
- OSC - An implementation of the OpenSoundControl protocol
- phos - An experimental Gemini client written in Common Lisp
- purgatory - A client implementation of the Plan 9 File Protocol
- rfc2388 - rfc2388 processes HTTP POST form data using enctype "multipart/form-data", as described in RFC 2388
- RSS - alimenta is a RSS/Atom parsing and generating library
- SHA1 - Secure Hash Algorithm 1 (SHA1) is defined in RFC 3174, and therefore more-or-less counts as a protocol
- SNMP - Simple Network Management Protocol
- tinmop - TUI/GUI client application for Gemini, Gopher, kamid, and Mastodon/Pleroma
- X11 - X11 stands for 'X Window System, Version 11'
protocol
Networking and other RFC-defined protocols: