The Best HatNote Alternatives in 2026

Reversepedia shows which English Wikipedia articles link to a specified article.

WikiNearby finds Wikipedia articles near a user’s location, another article or supplied coordinates.

Wikigraph visualizes links and relationships across English Wikipedia as an interactive map.

Scholarship Roar lists scholarships and internships worldwide, with application guides and deadline updates.

Slang.net defines current slang terms, acronyms and abbreviations, with daily entries and blog posts.

Wordnik provides a dictionary, word search, community entries and a daily word feature.

Urban Dictionary publishes user-submitted definitions of slang and other terms, including its daily featured entry.

Wikipedia Portals organizes navigation links by subject areas such as culture, geography, history and science.

Wikitia hosts encyclopedic articles written or curated by verified editors and contributors.

Encyclopedia.com provides dictionary and encyclopedia articles with pictures, facts and videos.

The General Index provides three tables derived from more than 107 million journal articles, including an n-gram table.

New World Encyclopedia publishes reference articles written or reviewed by certified experts.

Scrible saves, organizes, annotates and shares research articles and webpages in an online library.

Moby Thesaurus lets users search an open-source collection of English word relationships and synonyms.

Affixes explains English word beginnings and endings through examples, with the page listing 1,250 entries and 10,000 examples.

The Phrontistery provides an online dictionary of obscure English words, etymologies and topical vocabulary lists.

Phrases.org explains the meanings and origins of thousands of English phrases, idioms, sayings and proverbs.

Ozdic combines collocations, definitions, a thesaurus, idioms, examples and usage notes in one English lookup.

Merriam-Webster provides English word definitions, usage examples, quizzes and word games.

Etymonline provides accounts of the origins and histories of English words, phrases and idioms.

Power Thesaurus provides synonyms, antonyms, definitions and examples for English words.

DataCite connects research and advances knowledge, with updates about research software and scholarly records on its site.

The U.S. Climate Resilience Toolkit helps users explore climate-related risks and practical resources for addressing local hazards.

GeoGebra provides free tools for graphing, geometry and classroom activities, including a collaborative whiteboard.