Category
Every ALT-TECH entry in this category.
Replaces
Signal
Telegram
WhatsApp
Messaging with no user identifiers at all
Open source
for #Messaging
Replaces
Discord
Skype
WhatsApp
A serverless chat protocol with many clients
Open source
Replaces
Discord
Microsoft Teams
Slack
The flagship Matrix client, federated and self-hostable
Open source
for #Email
Replaces
Signal
Telegram
WhatsApp
A messenger that runs on ordinary email
Open source
for #Messaging
Peer-to-peer calls and chat with no accounts
Open source
for #Messaging
Replaces
Discord
Signal
WhatsApp
Metadata-resistant group chat over Tor
Open source
Chat with no metadata, over onion services
Open source
for #Messaging
Replaces
iMessage
Messenger
WhatsApp
Speak freely
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