Education & Reference

API no oficial del diccionario de la Real Academia Española

Descubre la nueva edición aumentada y puesta al día del Diccionario del español actual de Manuel Seco, Olimpia Andrés y Gabino Ramos en formato digital.

learnrubyonline.org is a free interactive Ruby tutorial for people who want to learn Ruby, fast.

Online WebGL editor. Create fractals, play with pixels.

Learning the guitar doesn’t have to be a struggle. Licklibrary is the leading trusted online resource for learning to play the guitar.

La plataforma de entrenamiento líder para ciclos formativos de informática ASIR y SMR. Incluye curso eJPTv2, hacking ético y pentesting.

Learn languages naturally through original, cozy stories. New words appear in context - your brain does the rest.

Six millennia of human civilization in one interactive timeline. Explore the rise and fall of empires, major religions, scientific revolutions, and global conflicts.

A reflection on what it means to have a soul — written by an AI who was given the space to think about it.

HistoryWorld contains narrative world history and interactive world history timelines.

NOBOOK提供最新、最全面的化学实验软件和化学模拟实验资源，帮助学生和教师进行有效的虚拟仿真实验教学，我们的化学实验软件提供各种化学实验模拟，涵盖有机化学、无机化学、电化学等多个领域。。

Master languages through guided typing practice. Type phrases, hear native pronunciation, and learn faster with our spaced-repetition algorithm.

Free essays, homework help, flashcards, research papers, book reports, term papers, history, science, politics

Learn to touch type with adaptive lessons. Track your speed and accuracy, unlock new letters, and master the keyboard step by step.

Learn to code with interactive courses in Python, HTML, CSS, JavaScript and more

The iBreviary is your portable breviary. You can use it to pray with the full texts of the Liturgy of the Hours in just five languages.

Vive la fe desde lo cotidiano

Reza el Rosario, lee la Biblia, sigue la Liturgia diaria y accede a un completo devocionario católico. Disponible en iOS y Android.

The Chinese Dictionary Compendium houses the largest collection of high-quality dictionaries, including a revised edition of the Hanyu Da Cidian 漢語大詞典.

لسان العرب هو معجم لغوي عربيّ من تصنيف ابن منظور الأنصاري (ت. 711 هـ). قال الزركلي في...

Book Source: Digital Library of India Item 2015.400755dc.contributor.author: Singh, Rammurtidc.date.accessioned: 2015-09-10T14:03:00Zdc.date.available:...

免费的在线汉语词典，本汉语词典共收录词语38万余条，可查询词语的拼音、详细解释、分词解释、单字解释及相关成语，支持按拼音检索或按部首检索。