refold.la
Refold provides educational videos, lessons, tutorials, or self-learning resources.
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zenith-raincoat-5cf.notion.site
Refold Mandarin provides educational videos, lessons, tutorials, or self-learning resources.
refseek.com
RefSeek is an academic search engine intended for students and researchers. It retrieves relevant academic results from web pages, books, encyclopedias, and journals, supports searching for PDF and Microsoft Office documents, and includes calculation and unit conversion features.
remnote.com
RemNote is an AI-powered study tool for students. It lets users upload PDFs, videos, or notes to instantly generate AI flashcards, quizzes, summaries, and explanations, and includes note-taking, spaced repetition, an exam scheduler, PDF annotation, and an AI tutor.
researchrabbit.ai
Explore connections between research papers and authors.
docs.ankiweb.net
Resources provides educational videos, lessons, tutorials, or self-learning resources.
finnishflashcards.com
Resources provides educational videos, lessons, tutorials, or self-learning resources.
reverseengineering.vercel.app
A site offering lessons on the fundamentals of reverse engineering, binary analysis and software security. It describes hands-on tutorials, practical examples and real-world scenarios covering binary analysis, malware research, and static and dynamic analysis.
reversepedia.org
Reversepedia is a Wikipedia browsing tool that does not host original content, only reversed hyperlinks between English Wikipedia articles. It enables users to identify which Wikipedia articles link to a specified article, and includes a random article search function.
reverso.net
Reverso provides educational videos, lessons, tutorials, or self-learning resources.
revisely.com
Revisely is an AI-powered learning platform with GCSE and A-Level revision notes, exam questions and past papers, plus tools that generate flashcards, quizzes and summaries from user materials. Generated content can be shared with peers or instructors. It began as a site for UK students preparing for exams and now serves students and professionals.
revisiondojo.com
revisiondojo provides educational videos, lessons, tutorials, or self-learning resources.
revisionscience.com
RevisionScience provides educational videos, lessons, tutorials, or self-learning resources.
rhinospike.com
RhinoSpike is a language learning tool that connects users with native speakers to exchange foreign language audio files. Users submit text to be read aloud, record audio for other users' requests, and download the resulting recordings.
ru.ac.za
Rhodes University is a higher academic institute in South Africa that offers a range of courses and diplomas. The site links admissions for undergraduate, postgraduate and international students, along with faculties and departments in commerce, education, humanities, law, pharmacy and science.
rip.so
rip.so is a memorial site listing messengers, social networks, browsers, gadgets and websites the internet forgot, organized into categories such as messengers and chat, social networks, software and apps, streaming and video, and search engines and browsers. The page is marked as under construction.
roadmap.sh
A community-driven collection of roadmaps, articles and guides intended to help developers grow in their careers. It offers role-based and skill-based roadmaps, best practices and guides, covering topics such as frontend, backend, full stack, DevOps, data analysis and machine learning, and allows searching available roadmaps.
watzlavick.com
A project for an amateur-built liquid fueled rocket engine and flight vehicle, with a site covering engine designs, igniters, a rocket, test stand and software. A launch of Rocket 1 reached 10,800 ft after about 10.5 seconds of engine run time.
projects.lib.rochester.edu
Rochester ASL / LSF provides educational videos, lessons, tutorials, or self-learning resources.
rocketlaunch.org
RocketLaunch.org lists rocket launches scheduled for the day, including launches from SpaceX, NASA and other agencies. It provides live updates, videos, mission details and a live countdown, and offers pages for past launches, scheduled launches, launch sites and launch providers.
royalconstellations.visualcinnamon.com
Royal Constellations is a visualization exploring a thousand years of ancestral connections in the European royal families. Clicking stars selects people and shows the shortest path between two royals. Each star is a person placed by year of birth and proximity to a royal leader today.
vim.rtorr.com
A web-based Vim cheat sheet listing commands and shortcuts grouped by area such as global commands, cursor movement, insert mode, editing, visual mode, registers, marks, macros and other topics. It presents concise commands intended for both beginners and experienced developers using Vim.
rentry.co
A guide by Dan on solving the 3x3x3 Rubik's Cube, using standard Western (WCA) notation. It covers the Beginner Method in full and an intermediate approach to CFOP, with sections on solving speed, notation and core methods.
rubikstrainer.com
RubiksTrainer is a site for learning to solve the Rubik's Cube, with practice solutions, algorithms, a solver, formula, timer and speedcubing material. It covers beginner and advanced sections, 3x3 algorithms, recognition practice, OLL, PLL, COLL, a timer, and a scrambler for Cross and F2L practice. The site notes a forthcoming move to another address.