Languages
General
Lexicity
An extensive index of ancient language resources.
DeepL Translate
Miles better than anything else of its sort online.
Forvo
Look up words in any language and listen to them pronounced by (hopefully) native speakers.
Latin
[Magnet link] Lingua Latina per se Illustrata
The magnum opus of Hans Ørberg and indisputably the best way to learn a language.
Latin by the Dowling Method
One of the many methods to learn Latin.
Ephemeris / old URL
Everyday news in Latin.
Latin Language Stack Exchange
Also accepts questions about Ancient Greek.
Scorpio Martianus
Spoken Latin and Ancient Greek videos by the very talented Luke Ranieri.
polýMATHY
Another channel by the same guy. Features some very good Latin content that's not in Scorpio Martianus, among other varied stuff.
Numen - Latin Lexicon
An online Latin dictionary and study tool.
Lexicon Morganium
Dictionary of new Latin terms.
Hiberna Caroli Raetici
Some reading material in Latin, ordered by fluency level.
The Latin Library
A digital library of Latin texts, ancient and modern.
Corpus Scriptorum Romanorum
(Archived) Another library of Latin texts.
Bibliotheca Augustana
And another one.
PHI Latin Texts
And yet another one.
Hypotactic
A library of Latin and Greek verse with meter indicators.
Latin is Simple
A latin dictionary, sentence analysis tool and library.
Perseus Word Study
A tool for morphological analysis of inflected Latin words.
Ab Urbe Condita
A site that tells you how many years have passed since the founding of Rome.
Japanese
So You Want To learn Japanese...
An essential essay for those looking into learning Japanese.
DJT Guide
A site featuring probably every single resource on Japanese you'll ever need.
Sakubi
A Japanese grammar guide.
Learn Japanese
The classic guide to learning Japanese by Tae Kim.
Reading
NHK News Web Easy
News in easy Japanese.
Itazuraneko Novel Library
Tens of thousands of Japanese ebooks available in html and epub formats (epubs are hosted on Mega).
Lolibrary
Search the TMW and PeepoHappyBooks ebook collections.
Anime
Jimaku
Japanese subtitles for a variety of shows (that you have downloaded illegally, of course).
Animelon
Watch anime online with Japanese subtitles.
Resources
Jisho
A Japanese dictionary.
jpdb
Another dictionary. Features a list of Japanese media with word count and difficulty ratings.
Yomitan
A pop-up word lookup tool for web browsers with Anki integration and extensive dictionary support; pretty much the standard now.
10ten Japanese Reader
Another pop-up word lookup tool, but this one is based on the classic Rikaichan extension.
Rikaisama
This one can be used with Pale Moon and similar browsers. Has Anki integration, but you won't find many dictionaries for it.
Ttsu Reader
An ebook reader for the browser that displays vertical text by default.
KotobaWeb
Practice reading Japanese words or play shiritori with friends and bots.
Mokuro
A manga reader for the browser meant to read OCR'd manga compatible with popup dictionaries. Get titles to read from the catalog.
Bret Mayer's Kanji
Learn Japanese proverbs, idioms, ateji, kokuji, ijidokun, etc, from a legend who's beaten the hardest kanken.
Others
lipu sona pona
A thorough toki pona course recommended by many, although I haven't used it. Available in multiple languages.
Toki Pona Dictionary
An interactive Toki Pona dictionary with sitelen pona hieroglyphs.