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Change.org is the world’s largest petition platform, using technology to empower more than 200 million users to create the change they want to see.

Sistema de Información Científica Redalyc. Red de Revistas Científicas. Acceso abierto sin fines de lucro propiedad de la academia.

Google Scholar provides a simple way to broadly search for scholarly literature. Search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions.

One of the largest and most authoritative collections of online journals, books, and research resources, covering life, health, social, and physical sciences.

ScienceDirect is the world's leading source for scientific, technical, and medical research. Explore journals, books and articles.

A comprehensive history of Internet search engines, from Yahoo to Alta Vista to Lycos, this timeline offers a chronological list of search engines from 1990 to the present.

Interactive infographic about the evolution of browsers and the web. This infographic features major web browsers since 1993 such as Mosaic, Netscape, Opera, Internet Explorer, Safari, Firefox, and Chrome, as well as key developments in web technologies such as HTML, CSS, and JavaScript.

Soluciones prácticas a problemas cotidianos. Aprende de los mejores expertos con artículos en formato vídeo y texto a hacer casi cualquier cosa que te propongas. Además nuestra comunidad te ayudará a resolver tus dudas.

Series Movil totalmente gratis en HD para tu celular, disfruta de los mejores animes, novelas, peliculas, tv en vivo por internet, series online o descargar en buena calidad.

Openload Movies - Watch Free Movies and TV Series Online in High Quality, fast and easy, without downloading anything at Openload.

TED Talks are influential videos from expert speakers on education, business, science, tech and creativity, with subtitles in 100+ languages. Ideas free to stream and download.

All-in-one digital intelligence - Unlock the most powerful and most accurate digital datasets to research any market, company, website, app, or marketplace

Behance is the world's largest creative network for showcasing and discovering creative work

Unlimited downloads of stock videos, royalty-free music, photos, graphics, graphic templates & more. The only creative subscription you need.

Awwwards are the Website Awards that recognize and promote the talent and effort of the best developers, designers and web agencies in the world.

Escuchar radio y música en línea en más de 30.000 emisoras internacionales y nacionales. Disponible en directo y gratis en radio.es.

Start your podcasting journey in a matter of seconds Spreaker, the one-stop-shop for recording, publishing, monetizing and distributing your podcasts.

The world's largest digital library. Enjoy millions of eBooks, audiobooks, magazines, podcasts, sheet music, and documents. Start now with a free trial.

¿Quieres calcular tu ahorro? Roams te ayuda a comparar los precios de telefonía móvil, internet y tv. Descubre las mejores ofertas aquí.

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the world, securely and privately show content to your friends and family, or blog the photos and videos you take with a cameraphone.

Access 130+ million publications and connect with 20+ million researchers. Join for free and gain visibility by uploading your research.

An HTML5, online VGM and MIDI player featuring accurate MT-32 and Adlib emulation, and a growing collection of video game music from the golden era.

A collection of music from as many games as I can find

Your source for the best high quality wallpapers on the Net!

Open Library is an open, editable library catalog, building towards a web page for every book ever published. Read, borrow, and discover more than 3M books for free.

Explore live radio by rotating the globe.