When comparing Let's Chat vs AstraChat, the Slant community recommends AstraChat for most people. In the question“What are the best on-site Slack alternatives?” AstraChat is ranked 6th while Let's Chat is ranked 17th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free and open source
Let's Chat is available for free. It's licensed under the MIT license with source code available on GitHub.
Pro Direct connect
Pro Secure
Messages are received from clients using secured (TLS or SSL) XMPP (jabber) protocol.
Pro Network efficient
AstraChat is tuned to make very efficient use of the network connection and processor so you can be confident that it will use very little of your battery or data allowance.
Pro Supports a lot of protocol
- RFC-3920:Core
- RFC-3921:Instant Messaging and Presence
- XEP-0012 Last Activity
- XEP-0016 Privact lists
- XEP-0054 VCARD-temp
- XEP-0085 Chat State Notifications
- XEP-0153 vCard-Based Avatars
- XEP-0172 User Nickname
- XEP-0184 Message delivery receipts
- XEP-0191 Blocking commands
- XEP-0198 Stream Management
- XEP-0199 XMPP Ping
- XEP-0176: Jingle ICE-UDP
- XEP-0136: Message Archiving
- XEP-0045: Multi-User Chat
Cons
Con No 1:1 direct messages via webclient
The ability to directly message other users is still being implemented.
Con No OTR service
Off-the-Record Messaging (OTR) is a cryptographic protocol that provides encryption for instant messaging conversations. Astrachat doesn't include this protocol, that it is often included in other XMPP services.