Besten Dank fürs Pasten der EULA...
Vivaldi-EULA schrieb 5. Subject to the terms and conditions herein, Vivaldi hereby grants You a limited, non-exclusive, non-transferable, non-sublicensable license to install and use the Software and Services for its intended purpose.
6. You may use the Software and Services on your personal computer, including your laptop, desktop and handheld device. You may only use the Software and Services for personal use. By way of example, this means that although You are allowed to use our Software and Services at work or within your business or organization, You are not allowed to sell, trade or resell the Software or Services for any purpose, including without limitation any use in any application service provider environment, service bureau, or time-sharing arrangements
7. Without limiting the foregoing, you are neither allowed to (a) adapt, alter, translate, embed into any other product or otherwise create derivative works of, or otherwise modify the Software ; (b) separate the component programs of the Software for use on different computers; (c) reverse engineer, decompile, disassemble or otherwise attempt to derive the source code for the Software, except as permitted by applicable law; or (d) remove, alter or obscure any proprietary notices on the Software or the applicable documentation therein.
8. The Software and Services and all intellectual property rights therein are the exclusive property of Vivaldi and its suppliers, and all rights in and to the Software not expressly granted to You in this EULA are reserved. Vivaldi owns all copies of the Software, however made.
Klingt für mich so, als sei der Source-Code tatsächlich ohne Einschränkungen offen einsehbar, man darf halt nur nichts anderes damit machen als ihn für private Zwecke zu nutzen.
Letzteres wäre dann auch ein Unterschied zu den GPLs, denn da darf man ja den Source-Code ändern, weiterverwenden etc. mit der Bedingungen, dass sämtliche Änderungen etc. mit der gleichen GPL an die Community zurück gehen.