https://youtu.be/wSs1-020nNY

Dexed is a multi platform, multi format plugin synth that is closely modeled on the Yamaha DX7. Dexed is also a midi cartridge librarian/manager for the DX7.
Minimal documentation is available on Dexed Wiki.
Dexed is free software and is licensed on the GPL v3.
Features
- Multi platform (OS X, Windows or Linux) and multi format (VST, AU, LV2)
- The sound engine music-synthesizer-for-android is closely modeled on the original DX7 characteristics
- 144 DAW automatable DX7 parameters available from one single panel
- Fully supports DX7 input and output Sysex messages; including controller change. This means that you can use this with a native DX7/TX7 as a patch editor and sysex manager
- Each operator have a realtime VU meter to know which one is active
- Can load/save any DX7/TX7 sysex programs. It is also possible to save a single program into a different sysex file.
Credits & thanks
- DX Synth engine : Raph Levien and the msfa team
- Graphical design : AZur Studio
- Surge Synthesizer Team for substantial contributions like microtuning and MPE support.
- LP Filter : Filatov Vadim (2DaT); taken from the excellent Obxd project
- PPPlay : Great OPL3 implementation, with documented code :D
- DX7 program compilation : Jean-Marc Desprez (author of SynprezFM)