When comparing AstraChat vs Flowdock, the Slant community recommends Flowdock for most people. In the question“What is the best team chat software?” Flowdock is ranked 4th while AstraChat is ranked 42nd. The most important reason people chose Flowdock is:
An easy & simple interface to filter chat discussion into separate threads.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
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

Pro Threaded discussions
An easy & simple interface to filter chat discussion into separate threads.
Pro Drag and drop file sharing
Files can be dragged and dropped in to the flow dock screen for upload.
Pro Multi-platform
Browser Based, as well as:
- iPhone and iPad App
- Android App
- Mac OS X App
Pro Stored chat history
Content and discussions are stored forever.
Pro Smart pastes & code syntax highlighting
Pro Private chat option
Able to speak privately/talk head-to-head.
Pro Notification system
A specific user or everyone in the channel can be notified via @user or @everyone respectively.
Pro A full developer API
Flowdock API allows developers the freedom to create custom integrations.
Pro Create and assign PRs from Flowdock
You can interact with Github directly from Flowdock to create PRs.
Pro Free for teams of five, non-profits and students
Pro Data exports
Back up conversations and files fully at any time.
Pro Add Tools
On top of our 50+ custom integrations, easily integrate any tool that sends emails or generates RSS feeds, as well as having the option to build a custom integration with Flowdock's API
Pro Status updating
Allows co-workers to know what you’re up to "/status I'm busy today!"
Pro Google Apps Integration
Google Apps get a Flowdock link to the Apps tool-bar and won't have to separately manage users
Pro Typo Fix-ups
Pro Able to host users external to your team
When working with stakeholders (clients or partners) you can add organizations to manage internal privacy
Cons
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.
Con Proprietary (non-free/libre)
Con No self-hosting available
If you are worried about third-parties getting access to your data you should consider self-hosting. With self-hosting you are in control over where your data is stored, who has access to it. You will also not be vulnerable to exploits of a third-party provider.
Con Buggy android app
Google sign up didn't work, then after going to the website to do the sign up, the invite team members screen was broken.
Con Free only for small teams, non-profits or students
Unless it's used by a team of less than five people, a non-profit or students, Flowdock will cost $3/mo per person.
