Morris: Basque-English dictionary
Hiztegia 3000: Basque-Spanish dictionary
Elhuyar:
Basque-Spanish dictionary
Orotariko euskal hiztegia: Basque-Spanish
dictionary (or PDF format) 
Basque term dictionary
English, Spanish, French, Latin: geology, geography, agriculture, biology, history, philosophy, religion, sports...
Harluxet encyclopaedia
Basque-French
dictionary by topics
Basque etymological dictionary
& translation in French & Spanish
Etymological
dictionary of the Basque by Larry Trask (2008)
Diccionario vasco-español-francés:
Basque-Spanish-French dictionary by Resurrección María de Azkue (1905)
Dictionnaire français-basque:
French-Basque dictionary by Louis Fabre (1870)
Dictionnaire basque-français (Guipuscoan,
Biscayan, Lapurdian, Lower Navarrese): Basque-French dictionary by Willem van Eys (1873)
Vocabulaire
de mots basques bas-navarrais: vocabulary of Basque words (Lower Navarrese) by A. Salaberry d'Ibarrolle (1856)
Dialogues basques (Guipuscoan, Biscayan, Lapurdian,
Souletin) with translations in Spanish & French (1857)
Basque proverbs (14 000): search a proverb in Basque,
Spanish,
English,
Latin
Basque
grammar
Basque course
(in Spanish)
Outlines of Basque grammar by Willem van Eys (1883)
Euzkal-iztiya, Gramática
baska: Basque grammar (in Basque & Spanish) by Juan Manuel Lertxundi y Baztarrika (1913)
Grammaire de la langue basque: grammar
of the Basque language by Saint Hilaire Blanc (1854)
Gramática
de los cuatro dialectos literarios de la lengua euskara: grammar of the Basque dialects, by Arturo Campión (1854)
El imposible
vencido, arte de la lengua bascongada, by Manuel de Larramendi (1853)
Discursos de
la antigüedad de la lengua cantabra bascongada by Baltasar de Echave (1607)
books about Basque language: Google books
& Internet
archive
Basque texts from 16th to 20th century
Basque authors: texts & presentation
Basque poems with translations in English, French, Spanish, German
classical books translated in basque language: Historiak
by Herodote, Politeia by Platon, Gauzen izaeraz de Lucrèce, Bizitzaren
laburtasunaz by Seneca, Eromenaren laudorioa by Erasmus, Entseiuak by Montaigne...
the Bible in unified Basque
Iesus Christ Gure Iaunaren Testamentu Berria: New Testament,
translation of Johannes de Leizarraga (1571)
Iesus Krist Gure Iaunaren Testamentu Berria
by Joanes Leizarraga (modern graphy)
Kateximea:
catechism
ABC, edo Kristinoen
instuktionea: lexicon of Christian instruction
Kalendrera:
calendar of the year 1572 with religious holidays
The earliest translation
of the Old Testament into the Basque language (a fragment) by Pierre d'Urte, of Saint-Jean-de-Luz (ca 1700)
by Llewelyn Thomas (1894)
Hymn
to brotherly love by Paul of Tarsus (1 Corinthians 13) in several Basque
translations (Bizkaian, Navarrese-Lapurdian, Souletin, unified) & other
languages
Gizon-emakume guztiak aske jaiotzen dira, duintasun eta eskubide berberak dituztela ;
eta ezaguera eta kontzientzia dutenez gero, elkarren artean senide legez jokatu beharra dute.
First article in many languages
Declaration of Human Rights in Basque, English & other languages
Basque country: map & civilization
