A: Yes. UNS support needs to be implemented in terms of integration with the other application. The Plan 4 support custom integration where you can extend the data via Python interfaces and do custom implementation and decisions based on the topics and data.
We have done SCADA Implementation for customers using Modbus interfaces.
I don’t quite understand the deal here, is this one purchase is per single MQTT Broker/ instance? For example Tier 4, we have single broker with max capacity of 200 connected clients or we can deploy multiple brokers with 200 concurrent clients in total?
Does this MQTT Broker system support ACLs and topic ACLs per user/group supported? Since you mentioned data connectors for sending data to different databases, does the system support transforming data from a specific topic to DB schema? e.g Data Connector A → Routes `projectA/#` to PostgreSQL (table: temperature_logs) Data Connector B → Routes `projectB/#` to MongoDB (collection: gps_coords)
My last question is: I want to use this broker to send messages to nearly 1,000 mobile devices via MQTT. However, it only supports up to 200 concurrent devices, which seems quite limited to me. Does this mean the broker is only suitable for IoT use cases?
CrystalMQ has been tested for 50,000+ Device connectivity and 2 MB/second data rate on a single instance Ubuntu installation. It also supports clustering and the always available options for large installations.
However the listing done on the AppSumo is capped to 200 Device connectivity for supporting smaller and single instance implementations.
Please contact support@bevywise.com
Q: Comparing MQTT Broker to Eclipse Mosquitto
Eclipse Mosquitto is an open-source project that is free to use. How does your product compare to it?
A: Mosquitto provides only the core MQTT Broker functionality.
CrystalMQ provides the out of the data connectors for sending data to different databases and big data engine. It also has cutom UI and dashboard for reviewing your incoming and outgoing messages.
Howver these functionalties comes with the 4 codes version.
Q: Unified Namespace included?
That and any particular SLA as part of this deal?
ranjith_bevywise
Jun 10, 2025A: Yes. UNS support needs to be implemented in terms of integration with the other application. The Plan 4 support custom integration where you can extend the data via Python interfaces and do custom implementation and decisions based on the topics and data.
We have done SCADA Implementation for customers using Modbus interfaces.
Learn more about the custom interfaces here...
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Q: About the deal
I don’t quite understand the deal here, is this one purchase is per single MQTT Broker/ instance? For example Tier 4, we have single broker with max capacity of 200 connected clients or we can deploy multiple brokers with 200 concurrent clients in total?
ranjith_bevywise
Jun 4, 2025A: Yes. You got it right.
One purchase is for a single instance only. You cannot deploy it in multiple servers.
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Does this MQTT Broker system support ACLs and topic ACLs per user/group supported? Since you mentioned data connectors for sending data to different databases, does the system support transforming data from a specific topic to DB schema?
e.g
Data Connector A → Routes `projectA/#` to PostgreSQL (table: temperature_logs)
Data Connector B → Routes `projectB/#` to MongoDB (collection: gps_coords)
(1/2) ACL for the Clients/Topics are supported and can be configured when you add the mqtt authentication keys.
Data Transformation and Cusotmized data storage is supported using a module - Custom Storage. This needs a some custom python coding to achieve this.
The python hook gives you the clientid, topic and message and you can make decisions on where to write based on any one of these data.
(2/2)
You can refer to the developer guide on how to write the custom hook
https://www.bevywise.com/mqtt-broker/python-mqtt-broker-interface.html#CustomDataStore
Does it also support connections via WS and WSS?
Yes. CrystalMQ supports both Websocket - WS & WSS.
Screenshot from the product dashboad.
https://img1.bevywise.com/images/overview-2.png
Refer Documentation - https://www.bevywise.com/mqtt-broker/help.html#user-interface
My last question is: I want to use this broker to send messages to nearly 1,000 mobile devices via MQTT. However, it only supports up to 200 concurrent devices, which seems quite limited to me. Does this mean the broker is only suitable for IoT use cases?
CrystalMQ has been tested for 50,000+ Device connectivity and 2 MB/second data rate on a single instance Ubuntu installation. It also supports clustering and the always available options for large installations.
However the listing done on the AppSumo is capped to 200 Device connectivity for supporting smaller and single instance implementations.
Please contact support@bevywise.com
Q: Comparing MQTT Broker to Eclipse Mosquitto
Eclipse Mosquitto is an open-source project that is free to use. How does your product compare to it?
ranjith_bevywise
May 22, 2025A: Mosquitto provides only the core MQTT Broker functionality.
CrystalMQ provides the out of the data connectors for sending data to different databases and big data engine. It also has cutom UI and dashboard for reviewing your incoming and outgoing messages.
Howver these functionalties comes with the 4 codes version.
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Q: Is the Modbus Gateway included?
I have a lot of devices that communicate via Modbus TCP, is it possible to connect it to the MQTT broker?
ranjith_bevywise
May 21, 2025A: No. The Modbus Gateway is not included as part of the MQTT Broker bundle.
Please share more details on the number of licenses of Gateway software you are looking for , so that we can figure out a way to support you.
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Verified purchaser
I have approximately 20 devices connected to the same network. How many devices can a single gateway support?
One Gateway should be able to pull the data out of the 20 devices. However the deployment depends on the following factors
1. data acquisition interval
2. the number of data points to be fetched
3. network speed
4. latency in the devices.
If you are planning to take up the 4 codes product, I can discuss with the team to set it up for you
Hope this helps.
Verified purchaser
Sounds good! I can only afford 3 codes. Thanks!
Q: ARM64 Support?
I tried to install it on an Ubuntu ARM64 system, but it does not seem to work. It works fine on an x86 CPU architecture.
Do you support ARM64?
ranjith_bevywise
May 21, 2025A: Hello Edwin ,
Good day !!
The product does not support ARM architecture.
I apologize for the inconvenience.
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