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Lightstreamer Server License Models
Product Editions
Lightstreamer Moderato edition can be used for free even in production environments and does not require any license key. Just download it and use it.

Three commercial editions of Lightstreamer are available (Allegro, Presto, and Vivace).
Check if you are eligible for the Startup Program!

You can choose between two different license models (the Server License and the Site License) and two different license durations (perpetual license and annual license rental).
License Duration
It is possible to purchase a perpetual license, with a one-off fee, or to choose license rental, with an annual fee.
Server License
With the "Server License" model, one License is required for each deployed instance of Lightstreamer Server, irrespective of the number of CPUs and the number of concurrent users.
Site License
With the "Site License" model, one License is for an installation at a single geographical site, on any number of machines located at that site. This means that all the machines can be in different offices but must be based at the same address. A Site License defines the maximum number of concurrent users (sessions) that the set of installed Lightstreamer Servers will allow. In case more than one Site License is purchased, the aggregated maximum number of concurrent sessions may be split over different Sites.

The cost of the site license fee is composed of a fixed part and a variable part. The cost of the variable part is determined by the maximum number of concurrent sessions. Different session packs are available.
Support and Maintenance
The Support and Maintenance option provides product support, corrective maintenance, and version upgrades.
Pricing
To get price quotes based on your requirements, please send an email to info@lightstreamer.com.
Sales Partners
Lightstreamer is sold either directly or through a consolidated network of experienced sales partners (learn more).
License Types
Read full details on the different license types available (Demo, Evaluation, Production, Developmetn & Test).
Lightstreamer JMS Extender License Models
License Duration
It is possible to purchase a perpetual license, with a one-off fee, or to choose license rental, with an annual fee.
Server License
With the "Server License" model, one License is required for each deployed instance of Lightstreamer Server, irrespective of the number of CPUs and the number of concurrent users.
Support and Maintenance
The Support and Maintenance option provides product support, corrective maintenance, and version upgrades.
Pricing
To get price quotes based on your requirements, please send an email to info@lightstreamer.com.
License Types
Read full details on the different license types available (Demo, Evaluation, Production, Developmetn & Test).