aqemu software package provides Qt5 front-end for QEMU and KVM, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install aqemu
aqemu is installed in your system.
Make ensure the aqemu package were installed using the commands given below,
$ sudo dpkg-query -l | grep aqemu *
You will get with aqemu package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Other OSs and file systems |
| Package | aqemu |
| Version | 0.9.2-2 |
| Description | Qt5 front-end for QEMU and KVM |
| Sub Section | Otherosfs |