AltCatalog

Alternatives to Session

Onion-routed messenger with no phone number

Alt Score

Alt Score · 66

How this alternative ranks. How it works →

Verified coverage 90%62
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

#9 of 11 in Personal messaging

Session ranks #9 of 11 in Personal messaging, with an Alt Score of 66. It is licensed under GPL-3.0, free and available on Windows, macOS, Linux, iOS and Android. 12 of 12 checklist rows are verified against a public source.

Most compared with Delta ChatJamiSimpleX Chat
Official site Suggest an edit Data history Work on Session? Claim this page
Who it's for

Privacy-conscious individuals, activists, journalists, and anyone who wants to message without tying their identity to a phone number or email — especially people in contexts where metadata exposure or centralized data collection is a risk.

What you get

End-to-end encrypted one-to-one chats and group conversations (communities of 100+ members) with no phone number, email, or personal data required to sign up. Messages are onion-routed through a decentralized network of community-run service nodes (built on Oxen) rather than passing through centralized servers. The app is open-source and supports disappearing messages for extra control over message lifespan.

How it works

You install the app and generate an Account ID locally instead of registering with a phone number or email. Messages are encrypted end-to-end and relayed through multiple onion-routing hops across the decentralized node network before reaching the recipient, so no single server sees both the message content and both parties' identities.

Where Session stands out

Verified capabilities most alternatives don't have.

Username-only signup only 3 of 10 apps
Federation / decentralized only 4 of 8 apps

See the full checklist

Why people leave Session

Dashed reasons are sourced facts; the rest are opinions. Vendors can dispute.

Sign in to add a reason — new reasons go through moderation before appearing.

Ranked alternatives

Ordered by Alt Score. Click any score to see the breakdown.

Sponsored Paid slot. Never affects the ranked order below. Promote here →
01

Chat over email with Autocrypt encryption.

GPL-3.0 iOSAndroidWindowsmacOS +1
Alt Score

Alt Score · 81

How this alternative ranks. How it works →

Verified coverage 90%79
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

02

Fully distributed P2P messenger from GNU.

GPL-3.0 iOSAndroidWindowsmacOS +1
Alt Score

Alt Score · 81

How this alternative ranks. How it works →

Verified coverage 90%79
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

03

Messenger without any user identifiers at all.

AGPL-3.0 iOSAndroidWindowsmacOS +1
Alt Score

Alt Score · 78

How this alternative ranks. How it works →

Verified coverage 90%75
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

04

Cloud messenger with huge groups; E2EE optional.

GPL-3.0 iOSAndroidWindowsmacOS +2
Alt Score

Alt Score · 78

How this alternative ranks. How it works →

Verified coverage 90%75
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

05

Meta's E2E encrypted messenger tied to phone numbers.

Proprietary iOSAndroidWindowsmacOS +1
Alt Score

Alt Score · 78

How this alternative ranks. How it works →

Verified coverage 90%75
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

06

The reference E2E encrypted messenger, nonprofit-run.

AGPL-3.0 iOSAndroidWindowsmacOS +1
Alt Score

Alt Score · 74

How this alternative ranks. How it works →

Verified coverage 90%71
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

07

Paid Swiss messenger usable without a phone number.

AGPL-3.0 iOSAndroidWindowsmacOS +2
Alt Score

Alt Score · 74

How this alternative ranks. How it works →

Verified coverage 90%71
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

08

Consumer messenger popular in Eastern Europe.

Proprietary iOSAndroidWindowsmacOS +1
Alt Score

Alt Score · 74

How this alternative ranks. How it works →

Verified coverage 90%71
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

09

E2E encrypted team messenger from Switzerland.

GPL-3.0 iOSAndroidWindowsmacOS +2
Alt Score

Alt Score · 66

How this alternative ranks. How it works →

Verified coverage 90%62
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

10

Unified inbox for many chat networks on Matrix.

Proprietary iOSAndroidWindowsmacOS +1
Alt Score

Alt Score · 51

How this alternative ranks. How it works →

Verified coverage 90%46
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

Feature comparison

Rows come from the Personal messaging checklist (16 rows). Human-verified cells only. ? means the value has not been verified.

Comparing Session Delta Chat × Jami × SimpleX Chat × Telegram × WhatsApp ×
+ Add app
Beeper Signal Threema Viber Wire
Personal messaging checklist SessionDelta ChatJamiSimpleX ChatTelegramWhatsApp
Pricing model
Starts at
License
Platforms
E2E encryption by default
E2E optional
Voice calls
Video calls
Phone number required
Username-only signup
Federation / decentralized
Message editing & deletion
Disappearing messages
Reactions
Multi-device without phone
Backup & export of history
verified pending unknown (?) Click any cell to view its source or propose a value
Sources & verification 15

Every fact and feature listed for Session is verified against its own pages. Each alternative is sourced on its own page.

FAQ

Yes. Delta Chat, Jami and Telegram have a free tier or are fully free. Free-tier limits in the comparison table are verified and dated.

Delta Chat, Jami and SimpleX Chat — every license claim links its source.