Lojban is a constructed human language, which has its origin in Loglan, created by James Cooke Brown in 1955. It was originally conceived as a test of the Sapir-Whorf hypothesis (i.e. that language governs thought). The Logical Language Group, founded in 1987, sees Lojban as the current viable version of Loglan.
ARJ's Lojban Pages
Essays on Lojban usage, and some original poetry in Lojban, unofficial gismu, a Lojban hash file for Unix's ispell, and the home page of the channel #lojban on EFnet.
jbofi'e is a program that checks grammar and translates Lojban texts. Related utilities are also available.
A proposal to use the Tengwar alphabet to represent the constructed language called Lojban.
A description of Lojban, including grammar and references.
An interactive, user-contributed work-in-progress textbook for learning Lojban.
Lojban - A Logical Language
A short introductory article about Lojban written by Robin Turner.
Lojban Mailing List
The official Lojban mailing list at Yahoo Groups (formerly eGroups). Both for newbie questions and obscure, technical discussions. Posts can be in English about Lojban, or in Lojban about anything.
Various information about and in Lojban. Lojbanic culture, slang, literary conventions and proposals for new vocabulary.
Main page for the webring of all things Lojban.
Lojban-only news site.
Official Lojban Home Page
Contains current reference materials such as word lists, reference grammar. Also has a collection of sample texts, and various software, including a YACC/LALR machine parser.
Using Tengwar to Write Lojban
A detailed proposal for how to write Lojban using J. R. R. Tolkien's Tengwar.