---
meta_title: "The Best Private Instant Messengers - Privacy Guides"
title: Realtidskommunikation
icon: material/chat-processing
description: Encrypted messengers like Signal and SimpleX keep your sensitive communications secure from prying eyes.
cover: real-time-communication.webp
---

<small>Protects against the following threat(s):</small>

- [:material-bug-outline: Passiva attacker](basics/common-threats.md#security-and-privacy ""){.pg-orange}
- [:material-server-network: Tjänsteleverantörer](basics/common-threats.md#privacy-from-service-providers ""){.pg-teal}
- [:material-eye-outline: Massövervakning](basics/common-threats.md#mass-surveillance-programs ""){.pg-blue}
- [:material-account-cash: Övervakningskapitalism](basics/common-threats.md#surveillance-as-a-business-model ""){.pg-brown}

These recommendations for encrypted **real-time communication** are great for securing your sensitive communications. These instant messengers come in the form of many [types of communication networks](advanced/communication-network-types.md).

[:material-movie-open-play-outline: Video: It's time to stop using SMS](https://www.privacyguides.org/videos/2025/01/24/its-time-to-stop-using-sms-heres-why ""){.md-button}

## Signal

<div class="admonition recommendation" markdown>

![Signal logo](assets/img/messengers/signal.svg){ align=right }

**Signal** is a mobile app developed by Signal Messenger LLC. The app provides instant messaging and calls secured with the Signal protocol, an extremely secure encryption protocol which supports forward secrecy[^1] and post-compromise security.[^2]

[:octicons-home-16: Homepage](https://signal.org){ .md-button .md-button--primary }
[:octicons-eye-16:](https://signal.org/legal/#privacy-policy){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://support.signal.org){ .card-link title="Documentation" }
[:octicons-code-16:](https://github.com/signalapp){ .card-link title="Source Code" }
[:octicons-heart-16:](https://signal.org/donate){ .card-link title="Contribute" }

<details class="downloads" markdown>
<summary>Nedladdningar</summary>

- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=org.thoughtcrime.securesms)
- [:simple-appstore: App Store](https://apps.apple.com/app/id874139669)
- [:simple-github: GitHub](https://github.com/signalapp/Signal-Android/releases)
- [:simple-android: Android](https://signal.org/android/apk)
- [:fontawesome-brands-windows: Windows](https://signal.org/download/windows)
- [:simple-apple: macOS](https://signal.org/download/macos)
- [:simple-linux: Linux](https://signal.org/download/linux)

</details>

</div>

Signal requires your phone number for registration, however you should create a username to hide your phone number from your contacts:

1. In Signal, open the app's settings and tap your account profile at the top.
2. Tap **Username** and choose **Continue** on the "Set up your Signal username" screen.
3. Enter a username. Your username will always be paired with a unique set of digits to keep your username unique and prevent people from guessing it. For example if you enter "John" your username might end up being `@john.35`. By default, only 2 digits are paired with your username when you create it, but you can add more digits until you reach the username length limit (32 characters).
4. Go back to the main app settings page and select **Privacy**.
5. Select **Phone Number**.
6. Change the **Who Can See My Number** setting to **Nobody**.
7. (Optional) Change the **Who Can Find Me By Number** setting to **Nobody** as well, if you want to prevent people who already have your phone number from discovering your Signal account/username

We have some additional tips on configuring and hardening your Signal installation:

[Signal Configuration and Hardening :material-arrow-right-drop-circle:](https://blog.privacyguides.org/2022/07/07/signal-configuration-and-hardening)

Contact lists on Signal are encrypted using your Signal PIN and the server does not have access to them. Personal profiles are also encrypted and only shared with contacts you chat with.

Signal supports [private groups](https://signal.org/blog/signal-private-group-system), where the server has no record of your group memberships, group titles, group avatars, or group attributes. Signal has minimal metadata when [Sealed Sender](https://signal.org/blog/sealed-sender) is enabled. The sender address is encrypted along with the message body, and only the recipient address is visible to the server. Sealed Sender is only enabled for people in your contacts list, but can be enabled for all recipients with the increased risk of receiving spam.

The protocol was independently [audited](https://eprint.iacr.org/2016/1013.pdf) in 2016. The specification for the Signal protocol can be found in their [documentation](https://signal.org/docs).

### Molly (Android)

If you use Android and your threat model requires protecting against [:material-target-account: Targeted Attacks](basics/common-threats.md#attacks-against-specific-individuals ""){.pg-red} you may consider using this alternative app, which features a number of security and usability improvements, to access the Signal network.

<div class="admonition recommendation" markdown>

![Molly logo](assets/img/messengers/molly.svg){ align=right }

**Molly** is an alternative Signal client for Android which allows you to encrypt the local database with a passphrase at rest, to have unused RAM data securely shredded, to route your connection via Tor, and [more](https://blog.privacyguides.org/2022/07/07/signal-configuration-and-hardening#privacy-and-security-features). It also has usability improvements including scheduled backups, automatic locking, and the ability to use your Android phone as a linked device instead of the primary device for a Signal account.

[:octicons-home-16: Hemsida](https://molly.im){ .md-button .md-button--primary }
[:octicons-eye-16:](https://signal.org/legal/#privacy-policy){ .card-link title="Integritetspolicy" }
[:octicons-info-16:](https://github.com/mollyim/mollyim-android/wiki){ .card-link title="Dokumentation" }
[:octicons-code-16:](https://github.com/mollyim/mollyim-android){ .card-link title="Källkod" }
[:octicons-heart-16:](https://opencollective.com/mollyim){ .card-link title="Bidra" }

<details class="downloads" markdown>
<summary>Downloads</summary>

- [:simple-fdroid: F-Droid](https://molly.im/fdroid)
- [:octicons-moon-16: Accrescent](https://accrescent.app/app/im.molly.app)
- [:simple-github: GitHub](https://github.com/mollyim/mollyim-android/releases)

</details>

</div>

Molly is updated every two weeks to include the latest features and bug fixes from Signal. The exception is security issues, which are patched as soon as possible. That said, you should be aware that there might be a slight delay compared to upstream, which may affect actions such as [migrating from Signal to Molly](https://github.com/mollyim/mollyim-android/wiki/Migrating-From-Signal#migrating-from-signal).

Note that you are trusting multiple parties by using Molly, as you now need to trust the Signal team *and* the Molly team to deliver safe and timely updates.

**Molly-FOSS** is a version of Molly which removes proprietary code like the Google services used by both Signal and Molly at the expense of some features (like battery-saving push notifications via Google Play Services). You can set up push notifications without Google Play Services in either version of Molly with [UnifiedPush](https://unifiedpush.org). Using this notification delivery method requires access to a [MollySocket](https://github.com/mollyim/mollysocket) server, but you can choose a public MollySocket instance for this.[^3]

Both versions of Molly provide the same security improvements and support [reproducible builds](https://github.com/mollyim/mollyim-android/tree/main/reproducible-builds), meaning it's possible to confirm that the compiled APKs match the source code.

## SimpleX Chat

<div class="admonition recommendation" markdown>

![SimpleX Chat logo](assets/img/messengers/simplex.svg){ align=right }

**SimpleX Chat** is an instant messenger that doesn't depend on any unique identifiers such as phone numbers or usernames. Its decentralized network makes SimpleX Chat an effective tool against [:material-close-outline: Censorship](basics/common-threats.md#avoiding-censorship){ .pg-blue-gray }.

[:octicons-home-16: Hemsida](https://simplex.chat){ .md-button .md-button--primary }
[:octicons-eye-16:](https://simplex.chat/privacy){ .card-link title="Integritetspolicy" }
[:octicons-info-16:](https://simplex.chat/docs/simplex.html){ .card-link title="Dokumentation" }
[:octicons-code-16:](https://github.com/simplex-chat){ .card-link title="Källkod" }

<details class="downloads" markdown>
<summary>Downloads</summary>

- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=chat.simplex.app)
- [:simple-appstore: App Store](https://apps.apple.com/app/id1605771084)
- [:simple-github: GitHub](https://github.com/simplex-chat/simplex-chat/releases)
- [:fontawesome-brands-windows: Windows](https://simplex.chat/downloads/#desktop-app)
- [:simple-apple: macOS](https://simplex.chat/downloads/#desktop-app)
- [:simple-linux: Linux](https://simplex.chat/downloads/#desktop-app)
- [:simple-flathub: Flathub](https://flathub.org/en/apps/chat.simplex.simplex)

</details>

</div>

SimpleX Chat provides direct messaging, group chats, and E2EE calls secured with the [SimpleX Messaging Protocol](https://github.com/simplex-chat/simplexmq/blob/stable/protocol/simplex-messaging.md), which uses double ratchet encryption with quantum resistance. Additionally, SimpleX Chat provides metadata protection by using unidirectional ["simplex queues"](https://github.com/simplex-chat/simplexmq/blob/stable/protocol/simplex-messaging.md#simplex-queue) to deliver messages.

To participate in conversations on SimpleX Chat, you must scan a QR code or click an invite link. This allows you to verify a contact out-of-band, which protects against man-in-the-middle attacks by network providers. Your data can be exported and imported onto another device, as there are no central servers where this is backed up.

You can find a full list of the privacy and security [features](https://github.com/simplex-chat/simplex-chat#privacy-and-security-technical-details-and-limitations) implemented in SimpleX Chat in the app's repository.

SimpleX Chat was independently audited in [July 2024](https://simplex.chat/blog/20241014-simplex-network-v6-1-security-review-better-calls-user-experience.html#simplex-cryptographic-design-review-by-trail-of-bits) and in [October 2022](https://simplex.chat/blog/20221108-simplex-chat-v4.2-security-audit-new-website).

## Briar

<div class="admonition recommendation" markdown>

![Briar logo](assets/img/messengers/briar.svg){ align=right }

**Briar** is an encrypted instant messenger that [connects](https://briarproject.org/how-it-works) to other clients using the [Tor network](alternative-networks.md#tor), making it an effective tool at circumventing [:material-close-outline: Censorship](basics/common-threats.md#avoiding-censorship){ .pg-blue-gray }. Briar can also connect via Wi-Fi or Bluetooth when in local proximity. Briar’s local mesh mode can be useful when internet availability is a problem.

[:octicons-home-16: Homepage](https://briarproject.org){ .md-button .md-button--primary }
[:octicons-eye-16:](https://briarproject.org/privacy-policy){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://code.briarproject.org/briar/briar/-/wikis/home){ .card-link title="Documentation" }
[:octicons-code-16:](https://code.briarproject.org/briar/briar){ .card-link title="Source Code" }
[:octicons-heart-16:](https://code.briarproject.org/briar/briar#donate){ .card-link title="Contribute" }

<details class="downloads" markdown>
<summary>Downloads</summary>

- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=org.briarproject.briar.android)
- [:fontawesome-brands-windows: Windows](https://briarproject.org/download-briar-desktop)
- [:simple-linux: Linux](https://briarproject.org/download-briar-desktop)
- [:simple-flathub: Flathub](https://flathub.org/apps/details/org.briarproject.Briar)

</details>

</div>

To add a contact on Briar, you must both add each other first. You can either exchange `briar://` links or scan a contact’s QR code if they are nearby.

Briar has a fully [published specification](https://code.briarproject.org/briar/briar-spec). Briar supports forward secrecy[^1] by using the Bramble [Handshake](https://code.briarproject.org/briar/briar-spec/blob/master/protocols/BHP.md) and [Transport](https://code.briarproject.org/briar/briar-spec/blob/master/protocols/BTP.md) protocol.

The client software was independently [audited](https://briarproject.org/news/2017-beta-released-security-audit), and the anonymous routing protocol uses the Tor network which has also been audited.

## Kriterier

**Observera att vi inte är knutna till något av de projekt som vi rekommenderar.** Förutom [våra standardkriterier](about/criteria.md)har vi utvecklat en tydlig uppsättning krav som gör det möjligt för oss att ge objektiva rekommendationer. Vi föreslår att du bekantar dig med den här listan innan du väljer att använda ett projekt, och att du gör din egen forskning för att se till att det är rätt val för dig.

### Minimikrav

- Must have open-source clients.
- Must not require sharing personal identifiers (particularly phone numbers or emails) with contacts.
- Must use E2EE for private messages by default.
- Must support E2EE for all messages.
- Must support forward secrecy[^1]
- Must have a published audit from a reputable, independent third party.

### Bästa fall

Våra kriterier för bästa fall representerar vad vi skulle vilja se av det perfekta projektet i denna kategori. Våra rekommendationer kanske inte innehåller alla eller några av dessa funktioner, men de som gör det kan vara högre rankade än andra på den här sidan.

- Should support future secrecy (post-compromise security)[^2]
- Should have open-source servers.
- Should use a decentralized network, i.e. [federated or P2P](advanced/communication-network-types.md).
- Should use E2EE for all messages by default.
- Should support Linux, macOS, Windows, Android, and iOS.
[^3]: You may refer to this step-by-step tutorial in German on how to set up UnifiedPush as the notification provider for Molly: [https://kuketz-blog.de/messenger-wechsel-von-signal-zu-molly-unifiedpush-mollysocket-ntfy](https://kuketz-blog.de/messenger-wechsel-von-signal-zu-molly-unifiedpush-mollysocket-ntfy).

[^1]: [Forward secrecy](https://en.wikipedia.org/wiki/Forward_secrecy) is where keys are rotated very frequently, so that if the current encryption key is compromised, it does not expose **past** messages as well.
[^2]: Future secrecy (or [post-compromise security](https://eprint.iacr.org/2016/221.pdf)) is a feature where an attacker is prevented from decrypting **future** messages after compromising a private key, unless they compromise more session keys in the future as well. This effectively forces the attacker to intercept all communication between parties since they lose access as soon as a key exchange occurs that is not intercepted.
