>>971410 (OP)
>QuasarDB
>relevant to free software
Taken from qdb-2.7.0-linux-64bit-server.tar.gz share/doc/qdb/LICENSE.txt
Copyright 2009-2018, QuasarDB SAS All rights reserved.
QuasarDB has the exclusive rights to license this product.
COMMUNITY EDITION
The community version is limited to 2-nodes, 4 GiB of RAM per node, and
16 GiB of storage per node.
Your may not loan, rent, lease, provide a service for which the user
charges a fee, license or otherwise transfer the Software or any copy
thereof, to or for the benefit of a third party.
You may not delete or change any of the proprietary rights notices of
QUASARDB and its suppliers appearing on the Software or Documentation
and the user agrees to reproduce all such notices on each copy he is
permitted to make under this Agreement.
You may not copy, alter, merge, modify, translate, adapt in any way, or
prepare any derivative work of the Software.
Except as permitted by law, you may not reverse engineer, disassemble,
decompile, or otherwise attempt to reconstruct or discover any source
code (other than readily user accessible source code, if any),
underlying ideas, algorithms, file formats or programming interfaces of
the Software, or allow others to attempt any of the foregoing.
The community edition is provided "as is" without warranty of any kind,
expressed or implied.
This Agreement shall be governed by the laws of France.
QuasarDB does not meet ANY of the conditions of free software:
< * The freedom to run the program as you wish, for any purpose (freedom 0).
The first clause "[t]he community version is limited to 2-nodes, 4 GiB of RAM per node, and 16 GiB of storage per node" and the fifth clause "[…] you may not reverse engineer, disassemble, decompile, or otherwise attempt to reconstruct or discover any source code […], underlying ideas, algorithms, file formats or programming interfaces of the Software, or allow others to attempt any of the foregoing" unambiguously restricts how you run the software.
< * The freedom to study how the program works, and change it so it does your computing as you wish (freedom 1). Access to the source code is a precondition for this.
The first half of the third clause "[y]ou may not delete or change any of the proprietary rights notices of QUASARDB and its suppliers appearing on the Software or Documentation […]" denies you the right to modify the source code privately.
< * The freedom to redistribute copies so you can help others (freedom 2).
The second clause "[y]ou may not loan, rent, lease, provide a service for which the user charges a fee, license or otherwise transfer the Software or any copy thereof, to or for the benefit of a third party" violates your freedom to redistribute unmodified copies.
< * The freedom to distribute copies of your modified versions to others (freedom 3). By doing this you can give the whole community a chance to benefit from your changes. Access to the source code is a precondition for this.
The fourth clause "[y]ou may not copy, alter, merge, modify, translate, adapt in any way, or prepare any derivative work of the Software" denies you the freedom to distribute modified copies.