Leo Famulari <leo@famulari.name> writes:

[...]

> It would be helpful to mention some of the services that it can be used
> with.

Or do you mean to list those services as an example?

The issue is I don't know what are free and non-free.

From streamlink source 'plugins/' directory:

    adultswim afreeca afreecatv aftonbladet akamaihd aliez aljazeeraen
    animelab antenna apac app17 arconai ard_live ard_mediathek artetv
    atresplayer bambuser bbciplayer beam beattv bfmtv bigo bilibili
    bloomberg bongacams brightcove brittv btv cam4 camsoda canalplus
    canlitv cdnbg ceskatelevize chaturbate cinergroup common_jwplayer
    common_swf connectcast crunchyroll cybergame cyro dailymotion
    daisuki deutschewelle dingittv disney_de dmcloud_embed dmcloud dogan
    dogus dommune douyutv dplay drdk earthcam ellobo eltrecetv eurocom
    euronews expressen facebook filmon filmon_us foxtr funimationnow
    furstream gardenersworld garena gomexp goodgame googledrive gulli
    hds hitbox hls http huajiao huomao huya ine __init__ itvplayer
    kanal7 liveedu liveme livestream looch media_ccc_de mediaklikk mips
    mitele mlgtv nbc nbcsports nhkworld nineanime nos npo nrk
    oldlivestream openrectv orf_tvthek ovvatv pandatv periscope picarto
    piczel playtv pluzz powerapp radionet raiplay rte rtlxl rtmp rtpplay
    rtve rtvs ruv schoolism seemeplay seetv servustv showroom skai
    speedrunslive sportal sportschau srgssr ssh101 startv streamable
    streamboat streamingvideoprovider streamlive streamme streamupcom
    streann svtplay swisstxt teamliquid telefe tf1 tga theplatform
    tigerdile trt trtspor turkuvaz tv1channel tv360 tv3cat tv4play
    tv5monde tv8cat tv8 tvcatchup tvnbg tvplayer tvrby tvrplus twitch
    ufctv ustreamtv vaughnlive vgtv viasat_embed viasat vidio vk vrtbe
    wattv webcast_india_gov webtv weeb wwenetwork younow youtube zattoo
    zdf_mediathek zhanqi

Oleg.