Europeana
Europeana is a single access point to millions of books, paintings, films, museum objects and archival records that have been digitized throughout Europe. It is an authoritative source of information coming from European cultural and scientific institution

La Biblioteca Digital Mexicana
A database all in Spanish with various documents. Nicely organized by period, theme or type.

Latin America

For an extensive list of online sites for Latin American Literature, visit Literature in Latin America — LANIC

Spain

• ARCA
  ARCA is an open portal giving access to relevant journals and magazines for the history of Catalonia which are no longer published.
• Biblioteca Digital Hispanica
• Biblioteca Digital Ciudad Seva
• Biblioteca Virtual Miguel de Cervantes
• Biblioteca Virtual de la Filología Española 
• Contexto Teatral
  Contexto Teatral is a live archive of new plays by contemporary Spanish playwrights. The online platform is especially useful as a theatre search engine, as it has clear and practical information about the authors and their available plays, including casting details and sample excerpts of the texts. The website allows visitors to search the authors by place of birth or by gender, as well as to search the plays by number of actors, actresses and or/characters, or by duration of the play, format (big or small), if it has been published or not and the kind of audience it’s written for. Furthermore, users can contact the authors directly.

• Ibero-American Electronic Text Series

• Digital Library of Ibero-American Heritage
• Lillian von der Walde Moheno. Portal academico
• MEDIEVALISMO - PORTAL DE HISTORIA MEDIEVAL
• The Pérez Galdós Editions Project
• Project Gutenberg
• Proyecto Ensayo Hispánico

For more go to: 

• Iberian Studies at WESSWEB

@QueLeer: Based in Venezuela, this user with 196,000 followers retweets stories from various sources.

@cult_digital: The Twitter feed of the cultural pages of the Argentine left-leaning newspaper Pagina 12.

@ficcionbreve: A feed dedicated to promoting news about Venezuelan literature.

@revistaenie: Revista Ñ, the cultural magazine of the Buenos Aires newspaper Clarín. It specializes in book reviews, author interviews and feature stories.

@javiercelaya: Publishing consultant,  CEO and founder of Dosdoce

@xpectro: Twitter handle of Pablo Arrieta, Bogota-based blue sky thinker on digital publishing issues

@canalL: An author video-interview site based in Barcelona.

@Gatopardocom: The excellent Mexican cultural magazine specialized in contemporary Latin-American journalism and narrative.

@serienegra: Based in Spain, specializes in contemporary noir fiction

@babelia_elpais: The feed of one of the Spanish language’s most important weekly cultural magazines, published by El País of Madrid.

@casamerica: The Spanish institution Casa de America, a central clearinghouse of cultural debate in iberoamerica.

@hipermedula: Based in Spain, this site is on the cutting edge of contemporary art and culture.

@JuanVilloro56: The personal Twitter account of Juan Villoro, one of Mexico’s most prestigious journalists and writers.

@bmvcervantes: The Cervantes Digital Library. Its goal is to promote Spanish literary culture, past and present.

@Planetadelibros: Book and trade news magazine, based in Madrid.

@FCEMexico: Fondo Cultura Económica, one of the most prestigious publishing houses in Latin America.

@cvc_cervantes: The international Cervantes Cultural Center, based in Madrid.

General

Papel en Blanco--Nadando en libros, cómics y todo el mundo de las letras.

Argentina

ADN Cultura--The cultural pages of the Buenas Aires' daily La Nacion

Revista Ñ--the cultural magazine of the Buenos Aires newspaper Clarín. It specializes in book reviews, author interviews and feature stories.

Colombia

GatoPardo--Online magazine with literature and film reviews

Cuba

La Jiribilla: Revista de Cultura Cubana--an online cultural magazine from Havana, Cuba

Mexico

Replicante--an online Mexican literary magazine

Nicaragua

Carátula--an online newspaper dedicated to the Centroamerican culutre

Spain

ABC_Libros--The book section of the Spanish daily ABC.

EL Boomerang--A site for literary blogs from Latin America and Spain

DesEquiLIBROS--Desequilibros is a forum for free expression about all literary forms as well as other art forms that can be displayed  by digital media without losing its essence. It is a vehicle for connecting literary and artistic works and creators with viewers and readers. 

DosDoce--a site about the nexus of cultural production and new technologies

Planeta de Libros--An online site from the Spanish publisher and distributor Planeta

Revista Serie Negra--An online magazine dedicated to novela negra and cine negra

Vanguardia's Revista de Libros--A literary supplement from one of Barcelona's major newspapers

More literary magazines

For more literary magazines, go to Agencia Noticias Literarias