Research & Study Tools

Maxima

maxima.sourceforge.io

Maxima is a free, open-source computer algebra system written in Lisp with an emphasis on symbolic computation. It is based on the DOE-MACSYMA system and licensed under the GPL. Its capabilities include symbolic integration, 3D plotting, solving differential equations, manipulation of symbolic and numerical expressions, and high-precision numerical calculations. It runs on Windows, Linux, and Mac, with both terminal and notebook interface options, and has an active user community with frequent updates.

Merriam-Webster

merriam-webster.com

Merriam-Webster provides educational videos, lessons, tutorials, or self-learning resources.

Moby Thesaurus

moby-thesaurus.org

Moby Thesaurus is a free, open-source website that provides access to the Moby Thesaurus, the largest thesaurus in the English language. The thesaurus was compiled by Grady Ward, and the website was built by Zeke Sikelianos. It offers a command-line interface for user access and supports saving the page to a mobile device home screen.

MyBib

mybib.com

Create citations and bibliographies.

nanoHUB

nanohub.org

Use simulation tools and learning resources for nanotechnology.

Netspeak provides educational videos, lessons, tutorials, or self-learning resources.

NewWorldEncyclopedia

newworldencyclopedia.org

NewWorldEncyclopedia provides educational videos, lessons, tutorials, or self-learning resources.

Niche

niche.com

Niche provides educational videos, lessons, tutorials, or self-learning resources.

NotebookCast

notebookcast.com

NotebookCast is a free online collaborative whiteboard that does not require signup to start using. It supports real-time multi-user drawing, includes built-in time-unlimited audio and video calls, and provides tools such as shape drawing, sticky notes, text editing, and screen sharing. Users can create reusable whiteboard templates, access night mode, and share whiteboards via links. A free registered account allows saving whiteboards to a personal dashboard, and the tool works on any modern browser.

NoteKnight

noteknight.com

NoteKnight is an online flashcard and study platform for creating, organizing, and studying flashcards via a web browser. Core features including flashcard creation, active recall-focused study modes, and public set browsing are free, with free plan limits on AI tools and image uploads. Users can import Quizlet flashcards, share set links, and print sets. A paid NOBLE subscription offers ad-free access, unlimited AI tools, image uploads, and focus mode, with no dedicated mobile app available.

Numbat

numbat.dev

Numbat is a statically typed programming language and high-precision scientific calculator with first-class support for physical dimensions and units. It supports mathematical computations, unit conversions, and physical quantity calculations, with documentation, syntax reference, and installation guides available.

numbr.dev

numbr.dev

Numbr is a smart calculator combined with a notepad that allows users to work with numbered notes alongside calculations. It is available as a web application and a Chrome extension, with documentation, bug reporting, and tips resources provided.

Numla provides educational videos, lessons, tutorials, or self-learning resources.

OneLook

onelook.com

Search dictionaries and explore related words.

OnlineConversion

onlineconversion.com

Convert between measurement units.

OpenRefine is a free, open source tool for working with messy data. It enables users to clean data, transform it between formats, and extend it with web services and external data. All data processing occurs locally on the user's machine rather than in cloud services. Key features include faceting to drill through large datasets, clustering to fix inconsistencies by merging similar values, reconciliation to match datasets to external databases, infinite undo/redo functionality, and support for contributing to Wikidata and other Wikibase instances.

OpenSyllabus

opensyllabus.org

OpenSyllabus is a non-profit archive of higher education teaching materials. It holds a collection of 32.9 million college syllabi from thousands of schools, providing curriculum overviews to support curricular innovation, lifelong learning, and student success. The project aims to expand open education, with most of its tools available for free. Additional offerings include an exploration tool for teaching across syllabi, a course transfer lookup tool, a navigable view of anglophone higher education, a print store for large prints of top-assigned academic titles, and a blog with news and data stories.

OurBoard provides educational videos, lessons, tutorials, or self-learning resources.

Ozdic

ozdic.com

Ozdic provides educational videos, lessons, tutorials, or self-learning resources.

Papertag

papertag.app

Papertag provides educational videos, lessons, tutorials, or self-learning resources.

Phrases.org

phrases.org.uk

Phrases.org.uk is a free public resource explaining the meanings and origins of thousands of English phrases, sayings, idioms, expressions and proverbs. Established in 1997, it is researched and written by Gary Martin and cited as a reference by leading publishers.

Phrontistery

phrontistery.info

The Phrontistery is a language resource website that has operated since 1996, offering an online dictionary of obscure English words, topical word lists, etymology materials, technical vocabulary aids, lipogram resources, and essays on language and linguistics.

PlagiarismDetector

plagiarismdetector.net

PlagiarismDetector is a free online plagiarism detection tool that identifies copied text in assignments and documents. It supports multiple languages, offers quick and deep search options, and allows URL or file uploads for checks. A paid PRO plan includes features such as no ads, support for multiple file uploads, and detailed accurate reports, with free checks accommodating up to 25k words.

PlanetCalc

planetcalc.com

PlanetCalc provides educational videos, lessons, tutorials, or self-learning resources.