​​Herramientas de comunicación
​​Con mayor frecuencia:  — Telegram — WhatsApp (desgraciadamente ya que la gran mayoría lo usa) Con menor frecuencia: — Riot (Matrix) — Elements — Jitsi Meet — Googe Meet y Skype  — Otras que tengo en cuenta: — Signal — XMPP (CoyIM, Gajim)  — Jami — Discord  — Big Blue Button……
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​​Chats y videollamadas
  1. ​​Telegram https://telegram.org/ (open source)
  1. ​​Elements https://element.io/ (open source)
  1. ​​Wire https://wire.com/en/ (open source)
  1. ​​Threema https://threema.ch/ (open source)
  1. ​​Retro Share https://retroshare.cc/
  1. ​​Slient Circle https://www.silentcircle.com/
  1. ​​Confide https://getconfide.com/.
  1. ​​Line https://line.me
  1. ​​Twin Me https://twin.me
  1. ​​WhatsApp https://www.whatsapp.com
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​​
​​Únicamente chats
  1. ​​Session https://getsession.org/ (open source)
  1. ​​Signal https://www.signal.org/ (open source)
  1. ​​Briar https://briarproject.org/ (open source)
  1. ​​Conversations https://conversations.im/ (open source)
  1. ​​Ricochet https://www.ricochetrefresh.net/ (open source)
  1. ​​CoyIM  https://coy.im/ (open source)
  1. ​​XMPP https://xmpp.org/ (open source)
  1. ​​qTox https://tox.chat/ — https://qtox.github.io/es.html (open source)
  1. ​​HexChat https://hexchat.github.io/ (open source)
  1. ​​Pidgim https://www.pidgin.im/ (open source)
  1. ​​ICQ https://www.icq.com/ (open source)
  1. ​​Weechat https://weechat.org/ (open source)
  1. ​​Jam https://jam.systems/ Salas de audio  (open source)
  1. ​​Speek https://github.com/Speek-App/Speek (open source)
  1. ​​SureSpot  https://www.surespot.me/
  1. ​​KeyBase https://keybase.io/
  1. ​​Gitter https://gitter.im/
  1. ​​OTR.im Chat https://otr.im/chat.html 
  1. ​​Rocket Chat https://rocket.chat/es/ 
  1. ​​DeltaChat https://delta.chat/es/
  1. ​​Libera https://libera.chat/
  1. ​​Gajim https://gajim.org/ 
  1. ​​Mumble https://www.mumble.info/ 
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​​Chats grupales
  1. ​​Riot Matrix  https://about.riot.im/ (open source)
  1. ​​Revolt https://revolt.chat/ (open source)
  1. ​​Discord https://discordapp.com/ (open source)
  1. ​​Zulip  https://zulip.com/ (open source)
  1. ​​Elements https://element.io/ (open source)
  1. ​​OnionShare https://onionshare.org/
  1. ​​FireChat https://opengarden.com/firechat
  1. ​​Mattermost https://mattermost.com/