: Primarily used by developers, Genymotion provided cloud-based and local virtualization for testing apps across thousands of different Android hardware configurations. Multi-System and Retro Emulators

: Known for its deep customization, Nox remained a favorite for users who needed to run multiple instances of games simultaneously.

: The team began a long-awaited transition to a more modern interface (Qt) and continued to improve the "Vulkan" renderer, providing better performance on modern hardware.

Emulation of high-end consoles reached significant milestones in 2021, moving many projects from experimental stages to daily usability.