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@@ -11,6 +11,24 @@ As anyone who knows me could tell you, I am a strong proponent of XMPP/Jabber as
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* Must be reasonably self hostable. I say reasonably because Signal advocates will often say you can *technically* self host Signal, if you "simply" modify away the Twilio dependencies, modify the clients to connect to your server and distribute your client to all of your contacts, etc.
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* Must be reasonably self hostable. I say reasonably because Signal advocates will often say you can *technically* self host Signal, if you "simply" modify away the Twilio dependencies, modify the clients to connect to your server and distribute your client to all of your contacts, etc.
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* Closely tied to the last point, it must support federation. Self hosting without federation can work, but isn't particularly useful at scale.
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* Closely tied to the last point, it must support federation. Self hosting without federation can work, but isn't particularly useful at scale.
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* Good mobile support with proper offline message archiving, instant notifications, etc
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* Good mobile support with proper offline message archiving, instant notifications, etc
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* Must not require [KYC](https://kycnot.me/about#what-is-kyc) to sign up
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Despite these requirements, I will still go into detail about some of the options that were ruled out, in case you aren't as rigid on these requirements as I am.
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Despite these requirements, I will still go into detail about some of the options that were ruled out, in case you aren't as rigid on these requirements as I am.
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## Feature Overview
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As a tl;dr, here's a comparison table. The table is derived from a now defunct page by the [Divested](https://divested.dev/) team. A mirror can be seen [here](https://divestos-archive.codeberg.page/page/messengers.html).
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| Name | Jabber/XMPP | Matrix | Signal | Discord | WhatsApp | Telegram |
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| ----- | ----------- | ------ | ------ | ------- | -------- | -------- |
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| FOSS Client(s) | Yes | Yes | Yes | No | No | Yes |
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| FOSS Server | Yes | Yes | Code over wall | No | No | No |
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| Federated | Yes | Yes | No | No | No | No |
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| E2EE | Yes | Yes | Yes | No | Yes | Only 1:1 chats |
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| [KYC](https://kycnot.me/about#what-is-kyc) | No | No | Yes | Yes | Yes | Yes |
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## In Depth
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### Matrix
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Matrix is a federated and self hostable chat protocol, very similar conceptually to XMPP.
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