- The Internet Report (IETF Weekly Updates)
- A table of new Internet Drafts and RFC's that come out each week, with synopses. Archived summaries go back to June 1999. - RFC Editor - Collates Request For Comments documents. Explains the RFC process, and includes a searchable database of RFCs.
- Free Protocols Foundation - Independent public forum supporting patent-free protocols. Includes policies, papers, a mission statement, and a list of free protocols.
- IETF Internet Drafts - List of documents organized by alphabetized subjects.
- Active IETF Working Groups - A directory of the Internet Engineering Task Force groups and their web pages.
- Internet protocols - General comments on protocol design, and good reference material on a few protocols (especially mail-related; also ftp, time, and misc) by Dan Bernstein.
- Internet2 - A consortium led by universities working in partnership with industry and government to develop and deploy advanced network applications and technologies, accelerating the creation of tomorrow's Internet.
- Internet Encyclopedia - Overview of Internet protocols.
- Port Numbers and Services Database - Well known port numbers for TCP and UDP, from Internet Assigned Numbers Authority (IANA).
- RFC Sourcebook - Description of protocols, file formats, glossary of terms, RFCs.
- The Kermit Project - A protocol that transfers text and binary files without errors between diverse types of computers over potentially hostile communication links, and a suite of communications software programs; Columbia University.