Are there projects that can used to replace or advance the closed source part of Virtual Box and what are their names?

VirtualBox is open source in parts and closed source in parts. **Sample for Open Source part:** * VirtualBox manager The source code can be found on: https://web.archive.org/web/20230215155445/https://github.com/mirror/vbox **Sample for closed source part:** * the extension pack. **See also the follow from Wikipedia:** "The core package is, since version 4 in December 2010, free software under GNU General Public License version 2 (GPLv2). The separate „VirtualBox Oracle VM VirtualBox extension pack“ providing support for USB 2.0 and 3.0 devices, Remote Desktop Protocol (RDP), disk encryption, NVMe and Preboot Execution Environment (PXE) boot is under a proprietary license, called Personal Use and Evaluation License (PUEL), which permits use of the software for personal use, educational use, or evaluation, free of charge. Since VirtualBox version 5.1.30 Oracle defines personal use as the installation of the software on a single host computer for non-commercial purposes. Unlike some software using a proprietary license, the „VirtualBox Oracle VM VirtualBox extension pack“ is not source-available since it includes closed-source components, which does not make the source code publicly available. Prior to version 4, there were two different packages of the VirtualBox software. The full package was offered gratis under the PUEL, with licenses for other commercial deployment purchasable from Oracle. A second package called the VirtualBox Open Source Edition (OSE) was released under GPLv2. This removed the same proprietary components not available under GPLv2." Source: * https://en.wikipedia.org/wiki/VirtualBox **Are there projects that replace or advance the closed source part of Virtual Box and what are their names ?**