Education & Reference

The LibreTexts libraries collectively are a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education.

Free online dictionaries - Spanish, French, Italian, German and more. Conjugations, audio pronunciations and forums for your questions.

Recursos en línea para fomentar la curiosidad científica y la adquisición de destrezas.

Learn to code in Python, C/C++, Java, and other popular programming languages with our easy to follow tutorials, examples, online compiler and references.

Online Graphic Design courses for Adobe Photoshop, Illustrator, InDesign, Lightroom and other Creative Cloud tools from an Adobe Certified Instructor.

Siempre se puede ser mejor

The Earth curvature calculator lets you find the distance from you to the horizon, as well as the height of an object that is partially hidden behind it.

Level up your programming skills with exercises across 52 languages, and insightful discussion with our dedicated team of welcoming mentors.

Calculator runs on PC/Mac, tablets and smartphones. Online calculator supports both simple arithmetic operations and calculation of percentages, exponentiation and root calculation

A Free Online Calculator, Quick and Easy, and Full Screen!

El libro de programación que te ayudará a escribir código más fácil de mantener

Tutoriales gratuitos de programación en castellano

En Trazos llevamos 25 años formando a los mejores profesionales del diseño creativo digital. Te invitamos a descubrir nuestra oferta formativa.

Modern JavaScript Tutorial: simple, but detailed explanations with examples and tasks, including: closures, document and events, object oriented programming and more.

learn-js.org is a free interactive JavaScript tutorial for people who want to learn JavaScript, fast.

Use this calculator to calculate and visualize what we can see of a target of a certain size and distance from any observer altitude, taking refraction into account. You can compare the results between flat earth and globe earth. Many more values are calculated and you can customize and store the settings.

Convert almost any type of unit, of length, weight, pressure, volume, area, speed, temperature, angle, file size, fuel consumption, energy, flow, torque and time. Also there are calculators for age, pace of runner, difference of dates, download time and paper size.

Tutoriales y cursos completos de Filmora, DaVinci Resolve y creatividad y recursos para llevar a cabo tu proyecto audiovisual 🎥

Interactive Resources for Learning Science.

Convert between units using the easy to use online converter - Change one unit into the other

Discover all that is hidden in the words. Find synonyms, uses, trends, statistics and much more. English dictionary with many images and usage examples.

Retos de código para JavaScript cada día

Artículos, vídeos, recursos y tutoriales sobre Desarrollo Web, Frontend, JavaScript ☕️, React ⚛️, CSS 🎨 y Performance Web ⚡️