Difference between revisions of "Language/Multiple-languages/Culture/Internet-Courses"
Line 49: | Line 49: | ||
** https://www.studysmarter.de/schule | ** https://www.studysmarter.de/schule | ||
Russian | Russian https://www.start2study.ru/ | ||
=== Afrikaans === | === Afrikaans === | ||
English | English https://www.easyafrikaans.com/ | ||
=== American Sign Language === | === American Sign Language === | ||
Line 65: | Line 63: | ||
=== Arabic === | === Arabic === | ||
==== Moroccan Arabic ==== | ==== Moroccan Arabic ==== | ||
English | English https://friendsofmorocco.org/learnarabic.htm [offl.d] | ||
==== Standard Arabic ==== | ==== Standard Arabic ==== | ||
Multiple languages | Multiple languages English & French & Turkish https://learning.aljazeera.net/ | ||
English | English | ||
Line 85: | Line 81: | ||
==== Tachelhit ==== | ==== Tachelhit ==== | ||
English | English https://friendsofmorocco.org/learnTashlheet.htm [offl.d] | ||
=== Bulgarian === | === Bulgarian === | ||
English | English https://www.bulgaro.io/ | ||
=== Buryat === | === Buryat === | ||
Russian | Russian https://nom.buryat-lang.ru/ | ||
=== Chinese === | === Chinese === | ||
Line 107: | Line 100: | ||
==== Yue Chinese ==== | ==== Yue Chinese ==== | ||
English | English http://www.cantonese.sheik.co.uk/ | ||
=== Czech === | === Czech === | ||
Czech | Czech https://www.nechybujte.cz/gramatika-cestiny | ||
=== Dutch === | === Dutch === | ||
Line 217: | Line 208: | ||
* http://www.mansioningles.com/ | * http://www.mansioningles.com/ | ||
Portuguese | Portuguese https://www.ef.com.br/guia-de-ingles/ | ||
=== Esperanto === | === Esperanto === | ||
Line 225: | Line 215: | ||
* https://www.kurso.com.br/ [offl.p] | * https://www.kurso.com.br/ [offl.p] | ||
Esperanto | Esperanto https://bertilow.com/pmeg/index.html [offl.d PL] | ||
English | English http://esperanto-edmonton.wikidot.com/kellerman-answerkey [offl.d] | ||
French | French http://www.la-vortaro.net/cours1/index.html | ||
German | German https://agei.esperanto-urbo.de/netzkurs/ | ||
=== Finnish === | === Finnish === | ||
English | English http://venla.info/ | ||
=== French === | === French === | ||
French | French https://www.bonjourdefrance.com/ | ||
English | English | ||
Line 275: | Line 259: | ||
* https://www.germanveryeasy.com/ | * https://www.germanveryeasy.com/ | ||
Spanish | Spanish https://www.alemansencillo.com/ | ||
=== Haitian === | === Haitian === | ||
English | English https://www.howtocreole.com/p/learn-haitian-creole.html | ||
=== Hebrew === | === Hebrew === | ||
English | English https://www.teachmehebrew.com/ | ||
=== Hindi === | === Hindi === | ||
English | English | ||
* https://www.learning-hindi.com/ [offl.d] | * https://www.learning-hindi.com/ [offl.d] | ||
* https://www.mindurhindi.com/ | * https://www.mindurhindi.com/ | ||
=== Hungarian === | === Hungarian === | ||
English | English http://www.hungarianreference.com/ | ||
=== Icelandic === | === Icelandic === | ||
Englis* https://icelandiconline.com/ | |||
* https://icelandiconline.com/ | |||
=== Ido === | === Ido === | ||
Multiple languages | Multiple languages https://idolinguo.org.uk/ [offl.w] | ||
=== Interlingua === | === Interlingua === | ||
English | English https://www.interlingua.com/an/curso/ [offl.d] | ||
=== Interlingue === | === Interlingue === | ||
Line 327: | Line 302: | ||
* Italian & English & German http://www.oneworlditaliano.com/ | * Italian & English & German http://www.oneworlditaliano.com/ | ||
English | English https://onlineitalianclub.com/ | ||
=== Japanese === | === Japanese === | ||
Line 334: | Line 308: | ||
* http://www.guidetojapanese.org/learn/grammar [offl.d PL] ''Hover the mouse on “Grammar Guide” on the top bar, click on “Translations” to see other languages.'' | * http://www.guidetojapanese.org/learn/grammar [offl.d PL] ''Hover the mouse on “Grammar Guide” on the top bar, click on “Translations” to see other languages.'' | ||
Japanese | Japanese https://upwrite.jp/grammar/ | ||
English | English | ||
Line 347: | Line 320: | ||
* https://www3.nhk.or.jp/nhkworld/en/learnjapanese/ | * https://www3.nhk.or.jp/nhkworld/en/learnjapanese/ | ||
Mandarin Chinese | Mandarin Chinese https://www.sigure.tw/learn-japanese/ | ||
=== Kannada === | === Kannada === | ||
English | English http://www.learnkannadaonline.com/ | ||
=== Kiribati === | === Kiribati === | ||
English | English https://www.trussel.com/f_kir.htm [offl.d] | ||
=== Korean === | === Korean === | ||
Line 365: | Line 335: | ||
=== Kurdish === | === Kurdish === | ||
==== Central Kurdish ==== | ==== Central Kurdish ==== | ||
English | English http://www.kurdishcentral.org/ | ||
=== Lingua Franca Nova === | === Lingua Franca Nova === | ||
Multiple languages | Multiple languages http://elefen.org/ [offl.d] | ||
=== Lojban === | === Lojban === | ||
English | English https://mw.lojban.org/papri/Lojban [offl.d] | ||
=== Macedonian === | === Macedonian === | ||
English | English http://www.learn-mk.com/ [offl.w] | ||
=== Māori === | === Māori === | ||
English | English http://nzetc.victoria.ac.nz/tm/scholarly/tei-PraDict.html [PL] | ||
=== Modern Greek === | === Modern Greek === | ||
Line 392: | Line 357: | ||
=== New Zealand Sign Language === | === New Zealand Sign Language === | ||
English | English http://www.learnnzsl.nz/#/id/co-01 | ||
=== Northern Frisian === | === Northern Frisian === | ||
German | German https://liirnordfriisk.blogspot.com/ | ||
=== Norwegian === | === Norwegian === | ||
Line 406: | Line 369: | ||
=== Old English === | === Old English === | ||
English | English https://en.wikisource.org/wiki/Bright%27s_Anglo-Saxon_Reader | ||
=== Old Frisian === | === Old Frisian === | ||
English | English https://learnfrisian.com/programs/old-frisian/ | ||
=== Pennsylvania German === | === Pennsylvania German === | ||
English | English https://www.deitshbooks.com/books.html [offl.d] | ||
=== Polish === | === Polish === | ||
Line 427: | Line 387: | ||
=== Romanian === | === Romanian === | ||
Multiple languages | Multiple languages https://www.learnro.com/ | ||
English | English https://simpleromanian.com/ | ||
=== Russian === | === Russian === | ||
Multiple languages | Multiple languages https://russky.info/ | ||
English | English | ||
Line 452: | Line 409: | ||
=== Saterfriesisch === | === Saterfriesisch === | ||
German | German https://learnfrisian.com/programs/saterfriesisch/ | ||
Western Frisian | Western Frisian https://learnfrisian.com/programs/sealterfrysk/ | ||
=== Scottish Gaelic === | === Scottish Gaelic === | ||
English | English | ||
* https://go-gaelic.scot/ | * https://go-gaelic.scot/ | ||
* https://learngaelic.scot/ | * https://learngaelic.scot/ | ||
=== Serbo-Croatian === | === Serbo-Croatian === | ||
==== Bosnian ==== | ==== Bosnian ==== | ||
Standard Arabic | Standard Arabic http://www.speakbosnian.com/ | ||
==== Croatian ==== | ==== Croatian ==== | ||
English | English https://www.hr4eu.hr/ | ||
=== Sindarin === | === Sindarin === | ||
English | English http://sindarinlessons.weebly.com/ [offl.d] | ||
=== Sindhi === | === Sindhi === | ||
English | English http://learn.sindhila.edu.pk/ | ||
=== Slovak === | === Slovak === | ||
Multiple languages | Multiple languages https://slovake.eu/ | ||
=== Slovenian === | === Slovenian === | ||
English | English http://learnslovenian.net/ | ||
=== Spanish === | === Spanish === | ||
Spanish | Spanish https://www.spanish.cl/ | ||
English | English | ||
Line 501: | Line 447: | ||
=== Swedish === | === Swedish === | ||
English | English https://www.sayitinswedish.com/ | ||
=== Tagalog === | === Tagalog === | ||
Line 510: | Line 455: | ||
=== Talossan === | === Talossan === | ||
English | English http://talossan.com/ | ||
=== Tamil === | === Tamil === | ||
English | English http://ccat.sas.upenn.edu/plc/tamilweb/ | ||
=== Telugu === | === Telugu === | ||
English | English http://www.learningtelugu.org/ [offl.d] | ||
=== Thai === | === Thai === | ||
English | English http://www.thai-language.com/ | ||
=== Tsonga === | === Tsonga === | ||
English | English https://www.xitsonga.org/ | ||
=== Turkish === | === Turkish === | ||
English | English http://turkishbasics.com/ | ||
=== Ukrainian === | === Ukrainian === | ||
English | English https://www.ukrainianlanguage.org.uk/read/index.htm | ||
=== Volapük === | === Volapük === | ||
English | English https://xn--volapk-7ya.com/ | ||
=== Western Frisian === | === Western Frisian === | ||
English | English https://learnfrisian.com/ | ||
=== Uncoded languages === | === Uncoded languages === | ||
==== aUI ==== | ==== aUI ==== | ||
English | English https://auilanguage.org/ | ||
==== Folksprak ==== | ==== Folksprak ==== | ||
English | English https://folksprak.org/ | ||
==== Glosa ==== | ==== Glosa ==== | ||
Line 559: | Line 493: | ||
==== Ithkuil ==== | ==== Ithkuil ==== | ||
English | English http://ithkuil.net/ | ||
==== Lingwa de Planeta ==== | ==== Lingwa de Planeta ==== | ||
Line 567: | Line 500: | ||
==== Loglan ==== | ==== Loglan ==== | ||
English | English http://www.loglan.org/ | ||
==== Romániço ==== | ==== Romániço ==== | ||
English | English http://romaniczo.com/ | ||
==== Romanid ==== | ==== Romanid ==== | ||
English | English http://romanid.nyelv.info/english.html [[http://romanid.nyelv.info/downloads.html offl.d]] | ||
==== Sambahsa ==== | ==== Sambahsa ==== | ||
Multiple languages | Multiple languages http://sambahsa.pbworks.com/w/page/10183084/FrontPage [offl.d] | ||
==== Slovio ==== | ==== Slovio ==== | ||
English | English https://www.slovio.com/ | ||
==== Toki Pona ==== | ==== Toki Pona ==== | ||
English | English https://moosader.itch.io/toki-pona-pal | ||
==== Uropi ==== | ==== Uropi ==== | ||
Multiple languages | Multiple languages http://uropi.free.fr/index1.html | ||
==== Unish ==== | ==== Unish ==== | ||
Korean | Korean http://www.unish.net/ | ||
== Q&A == | == Q&A == | ||
=== How to pick the best course from many? === | === How to pick the best course from many? === | ||
First, see how much it can teach you. You can roughly estimate from the last lesson. Second, see how detailed it can be and how many mistakes it contains. You can't easily achieve this if you are a beginner of the language. As a result, maybe you should expect to learn from more than one source, instead of picking the best one. |
Revision as of 09:41, 18 April 2021
On this page you will find free language courses. The term “course” means structured set of material for learning and practising, mainly around grammar.
This page has a sibling page: https://polyglotclub.com/wiki/index.php?title=Language/Multiple-languages/Culture/Internet-Blogs
Languages being taught are the headings, the language being used to teach are paragraph.
In progress.
Main
Courses available for offline use (document, webpage, program) are marked separately with [offl.d], [offl.w], [offl.p]; courses in public domain are marked with [PD]; courses under public licenses are marked with [PL].
Multiple languages
Multiple languages
- https://en.wikibooks.org/wiki/Subject:Languages [offl.w PL]
- https://www.duolingo.com/
- https://www.lingolia.com/
- English & Spanish & German https://www.usinggrammar.com/ | https://www.cafe-lingua.de/ | https://www.estudiogramatica.com/
- French & English https://www.tolearnfree.com/free-educational-sites.php
English
- http://resourcepage.gambia.dk/langabot.htm [offl.d]
- https://fsi-languages.yojik.eu/ [offl.d PD(partial)]
- https://grammar.collinsdictionary.com/
- https://human.libretexts.org/Bookshelves/Languages
- https://www.coerll.utexas.edu/coerll/
- https://www.coursera.org/browse/language-learning/
- http://listeningpractice.org/
- (about Japanese & Turkish & Spanish) https://elon.io/
French
- https://www.schoolmouv.fr/
- (about English & Spanish & French) https://www.maxicours.com/
German
- https://www.grammatiken.de/
- https://www.multilingual.de/
- https://www.schule-bw.de/faecher-und-schularten/sprachen-und-literatur
- https://www.uebungskoenig.de/
- (about English & French & German)
- (about English & German)
Russian https://www.start2study.ru/
Afrikaans
English https://www.easyafrikaans.com/
American Sign Language
English
- https://theaslapp.com/
- https://www.handspeak.com/
- https://www.lifeprint.com/asl101/lessons/lessons.htm
- https://www.startasl.com/
Arabic
Moroccan Arabic
English https://friendsofmorocco.org/learnarabic.htm [offl.d]
Standard Arabic
Multiple languages English & French & Turkish https://learning.aljazeera.net/
English
- https://www.learnarabiconline.com/
- https://www.madinaharabic.com/
- http://www.arabic-keyboard.org/arabic/ [offl.d]
Armenian
English
Berber
Tachelhit
English https://friendsofmorocco.org/learnTashlheet.htm [offl.d]
Bulgarian
English https://www.bulgaro.io/
Buryat
Russian https://nom.buryat-lang.ru/
Chinese
Mandarin Chinese
Multiple languages
- French & English https://chine.in/mandarin/ [PL(partial)]
English
- https://ninchanese.com/
- https://resources.allsetlearning.com/chinese
- http://www.hellochinese.cc/ [offl.p]
Yue Chinese
English http://www.cantonese.sheik.co.uk/
Czech
Czech https://www.nechybujte.cz/gramatika-cestiny
Dutch
English
English
Multiple languages
- https://helloenglish.com/
- https://www.efhello.com/
- Spanish & Portuguese https://idiomas.gcfglobal.org/
- English & Spanish https://www.really-learn-english.com/
English
- https://learnenglish.britishcouncil.org/grammar
- https://www.english-grammar.at/
- https://onlymyenglish.com/
- https://www.grammarbook.com/
- https://www.learngrammar.net/
- https://www.talkenglish.com/
French
- https://anglais-rapide.fr/
- https://angleterre.org.uk/anglais/grammar.htm
- https://monsieurboursier.fr/index.htm
- https://wallstreetenglish.fr/fiches-anglais/grammaire/
- https://www.anglaiscours.fr/
- https://www.anglissime.com/
- https://www.educastream.com/
- https://www.e-anglais.com/index.php
- https://www.teddybarbier.com/
German
- https://www.ef.de/englisch-hilfen/
- https://www.ego4u.de/
- https://www.englisch-hilfen.de/
- https://www.englisch-lernen-online.de/
- https://www.englischeinfach.com/
- https://www.kapiert.de/englisch/
- https://www.unterricht.de/Englisch/Oberstufe [offl.d]
Italian
- https://corsoinglese.altervista.org/
- https://www.esercizi-inglese.com/
- https://www.grammaticainglese.net/
- https://www.nspeak.com/newbasic/
- https://www.tuttoinglese.it/
Japanese
- https://delta-scope.com/
- https://eigogakusyu-web.com/
- https://englishcafe.jp/
- https://toiguru.jp/english-grammar
- https://www.eibunpou.net/index.html
- https://www.english-speaking.jp/table-of-contents-for-basic-english-grammar/
- http://makki-english.moo.jp/index.html
Mandarin Chinese
- https://engeasylearn.blogspot.com/
- https://en-grammar.xiao84.com/
- https://www.en998.com/g/
- https://www.hellotoabc.com/
- https://www.tingclass.net/yufa/
- http://www.kekenet.com/grammar/
- http://www.yingyuyufa.com/
Russian
- https://catchenglish.ru/
- https://engblog.ru/
- https://grammarway.com/
- https://lim-english.com/
- https://myefe.ru/
- https://simpler.link/
- https://study-english.info/
- https://www.enlineschool.com/grammar/
- https://www.native-english.ru/
Spanish
- https://blogpara-aprenderingles.blogspot.com/
- https://gramaticainglesa.org/
- https://inglesparaprincipiantes.net/
- https://londoneyepad.com/academia-de-ingles-en-cordoba/gramatica-inglesa/
- https://whitmanenglish.wordpress.com/
- https://www.curso-ingles.com/
- https://www.ef.com.ar/recursos-aprender-ingles/
- https://www.ef.com.pa/recursos-aprender-ingles/
- https://www.ejerciciosinglesonline.com/
- https://www.englishspanishlink.com/
- https://www.enliza.es/GRAMATICA%20JQUERY/1_INICIO/inicio.php
- https://www.inglesmundial.com/
- https://www.inglessencillo.com/
- https://www.lewolang.com/gramatica-inglesa
- https://www.pacho8a.com/ingl%C3%A9s/
- https://www.solinguainglesa.com.br/conteudo/indice.php
- https://www.superprof.es/apuntes/idiomas/ingles/
- https://www.todamateria.com.br/ingles/
- https://www.weloveteachingenglish.com/es/lecciones-gratis-para-aprender-ingles.html [PL]
- http://menuaingles.blogspot.com/2006/04/lessons.html
- http://www.enliza.es/GRAMATICA%20JQUERY/1_INICIO/inicio.php
- http://www.ompersonal.net/
- http://www.saberingles.com.ar/index.html
- http://www.mansioningles.com/
Portuguese https://www.ef.com.br/guia-de-ingles/
Esperanto
Multiple languages
Esperanto https://bertilow.com/pmeg/index.html [offl.d PL]
English http://esperanto-edmonton.wikidot.com/kellerman-answerkey [offl.d]
French http://www.la-vortaro.net/cours1/index.html
German https://agei.esperanto-urbo.de/netzkurs/
Finnish
English http://venla.info/
French
French https://www.bonjourdefrance.com/
English
- https://about-france.com/french/index.htm
- https://www.frenchplanations.com/
- https://www.lawlessfrench.com/
- http://frenchtutorial.com/
- http://www.french-linguistics.co.uk/grammar/
German
Multiple languages
- https://deutsch.info/
- German & English https://www.deutschakademie.de/online-deutschkurs/
German
- https://coerll.utexas.edu/dib/ [offl.d PL]
- https://deutschegrammatik20.de/
- https://deutschtraining.org/deutsch-lernen-online/
- https://easy-deutsch.de/deutsche-grammatik-uebersicht/
- https://kyrosschule.de/
- https://mein-deutschbuch.de/startseite.html
- https://sprachekulturkommunikation.com/
- https://www.kapiert.de/deutsch/
English
- https://courses.dcs.wisc.edu/wp/readinggerman/
- https://en.easy-deutsch.de/german-grammar-overview/
- http://germanforenglishspeakers.com/
- https://german.net/
- https://www.dartmouth.edu/~deutsch/Grammatik/Grammatik.html
- https://www.germanveryeasy.com/
Spanish https://www.alemansencillo.com/
Haitian
English https://www.howtocreole.com/p/learn-haitian-creole.html
Hebrew
English https://www.teachmehebrew.com/
Hindi
English
Hungarian
English http://www.hungarianreference.com/
Icelandic
Englis* https://icelandiconline.com/
Ido
Multiple languages https://idolinguo.org.uk/ [offl.w]
Interlingua
English https://www.interlingua.com/an/curso/ [offl.d]
Interlingue
Multiple languages
- Interlingue & English & German https://www.ie-munde.com/materiale-por-aprender-interlingue-lehrmaterial.html [offl.d]
Inuktitut
Multiple languages
- English & French https://tusaalanga.ca/
Iranian Persian
English
- https://www.easypersian.com/
- https://www.persianlanguageonline.com/learn
- http://www.persiandee.com/view/showLesson/currentLesson/0
Italian
Multiple languages
- Italian & English & German http://www.oneworlditaliano.com/
English https://onlineitalianclub.com/
Japanese
Multiple languages
- http://www.guidetojapanese.org/learn/grammar [offl.d PL] Hover the mouse on “Grammar Guide” on the top bar, click on “Translations” to see other languages.
Japanese https://upwrite.jp/grammar/
English
- https://jlptsensei.com/
- https://learnjapanesedaily.com/
- https://pomax.github.io/nrGrammar/ [offl.w]
- https://steven-kraft.com/projects/japanese/
- https://www.yookoso.com/
- https://www.imabi.net/
- https://www2.gwu.edu/~eall/vjgnew/vjghomepage/vjghome.htm
- https://www3.nhk.or.jp/nhkworld/en/learnjapanese/
Mandarin Chinese https://www.sigure.tw/learn-japanese/
Kannada
English http://www.learnkannadaonline.com/
Kiribati
English https://www.trussel.com/f_kir.htm [offl.d]
Korean
English
Kurdish
Central Kurdish
English http://www.kurdishcentral.org/
Lingua Franca Nova
Multiple languages http://elefen.org/ [offl.d]
Lojban
English https://mw.lojban.org/papri/Lojban [offl.d]
Macedonian
English http://www.learn-mk.com/ [offl.w]
Māori
English http://nzetc.victoria.ac.nz/tm/scholarly/tei-PraDict.html [PL]
Modern Greek
English
- https://www.greekgrammar.eu/
- https://www.foundalis.com/lan/grkgram.htm
- http://kypros.org/LearnGreek/
- http://www.xanthi.ilsp.gr/filog/
New Zealand Sign Language
English http://www.learnnzsl.nz/#/id/co-01
Northern Frisian
German https://liirnordfriisk.blogspot.com/
Norwegian
Norwegian Bokmål
English
Old English
English https://en.wikisource.org/wiki/Bright%27s_Anglo-Saxon_Reader
Old Frisian
English https://learnfrisian.com/programs/old-frisian/
Pennsylvania German
English https://www.deitshbooks.com/books.html [offl.d]
Polish
Multiple languages
- English & German https://mowicpopolsku.com/
English
- https://www.apronus.com/learnpolish/
- https://polishgrammar.com/free-online-course/
- http://skwierzyna.net/learn_polish.htm [offl.d]
Romanian
Multiple languages https://www.learnro.com/
English https://simpleromanian.com/
Russian
Multiple languages https://russky.info/
English
- https://everydayrussianlanguage.com/en/home/
- https://learnrussianstepbystep.com/en/learn-russian/
- https://learnrussian.rt.com/
- https://www.russianforeveryone.com/
- https://www.russianforfree.com/
- http://russianlearn.com/
- http://www.russianlessons.net/
Samoan
English
Saterfriesisch
German https://learnfrisian.com/programs/saterfriesisch/
Western Frisian https://learnfrisian.com/programs/sealterfrysk/
Scottish Gaelic
English
Serbo-Croatian
Bosnian
Standard Arabic http://www.speakbosnian.com/
Croatian
English https://www.hr4eu.hr/
Sindarin
English http://sindarinlessons.weebly.com/ [offl.d]
Sindhi
English http://learn.sindhila.edu.pk/
Slovak
Multiple languages https://slovake.eu/
Slovenian
English http://learnslovenian.net/
Spanish
Spanish https://www.spanish.cl/
English
- https://studyspanish.com/grammar
- https://www.spanishdict.com/guide
- https://www.spanishlearninglab.com/
- https://www.spanishveryeasy.com/
Swedish
English https://www.sayitinswedish.com/
Tagalog
English
Talossan
English http://talossan.com/
Tamil
English http://ccat.sas.upenn.edu/plc/tamilweb/
Telugu
English http://www.learningtelugu.org/ [offl.d]
Thai
English http://www.thai-language.com/
Tsonga
English https://www.xitsonga.org/
Turkish
English http://turkishbasics.com/
Ukrainian
English https://www.ukrainianlanguage.org.uk/read/index.htm
Volapük
English https://xn--volapk-7ya.com/
Western Frisian
English https://learnfrisian.com/
Uncoded languages
aUI
English https://auilanguage.org/
Folksprak
English https://folksprak.org/
Glosa
Multiple languages
- English & German http://www.glosa.org/en/index_materia.html [offl.d]
Ithkuil
English http://ithkuil.net/
Lingwa de Planeta
Multiple languages
- Russian & English http://www.lingwadeplaneta.info/
Loglan
English http://www.loglan.org/
Romániço
English http://romaniczo.com/
Romanid
English http://romanid.nyelv.info/english.html [offl.d]
Sambahsa
Multiple languages http://sambahsa.pbworks.com/w/page/10183084/FrontPage [offl.d]
Slovio
English https://www.slovio.com/
Toki Pona
English https://moosader.itch.io/toki-pona-pal
Uropi
Multiple languages http://uropi.free.fr/index1.html
Unish
Korean http://www.unish.net/
Q&A
How to pick the best course from many?
First, see how much it can teach you. You can roughly estimate from the last lesson. Second, see how detailed it can be and how many mistakes it contains. You can't easily achieve this if you are a beginner of the language. As a result, maybe you should expect to learn from more than one source, instead of picking the best one.