💬 Online Groups

Microblogging

The Mastodon instance esperanto.masto.host is like the old Twitter, but decentralized. It has about 1100 members. You can set the interface to English or Esperanto.

Chat

The Esperanto Discord server has more than 7k members. This server is mostly in Esperanto, but you can ask questions in English in channels like #lernejo and #angla.

Questions & Answers

Esperanto Stack Exchange, with 4k+ users, is great for questions and answers about the language.

Instant messaging

You can find a great list of Telegram channels on telegramo.org.

Social network

MiaVivo is a social network for Esperanto speakers. Similar to Facebook in format, but non-commercial and privacy-respecting.

Social news and discussion

There are many Reddit subs like r/Esperanto, r/LearnEsperanto, r/Memeoj (for memes) and r/Esperante (for discussion in Esperanto but not about the language). There are also communities on Lemmy like esperanto@sopuli.xyz and esperanto@lemmy.world.

Online conferences and meetups

You can find many virtual meetups on Eventa Servo and Meetup.com.

Retoso is a multiday videoconference event for youth, happening every year. It has presentations on many themes, roundtables, games, quizzes and workshops. On YouTube you can find many videos about previous editions.