Open Source Kotlin Emulators

melonDS Android is a mobile port of the melonDS emulator, designed to run Nintendo DS and DSi games on Android devices with a focus on performance and usability. It brings the accuracy and features of the original desktop emulator to smartphones, enabling users to play games and run homebrew software directly on mobile hardware. The emulator includes support for features such as save states, ROM loading, and integration with third-party frontend launchers. Performance is optimized through techniques like just-in-time (JIT) compilation and threaded rendering, allowing many games to run at full speed on modern 64-bit devices. The project also supports compressed ROM formats and flexible file handling through Android’s storage access framework. While some advanced features such as local multiplayer are still missing, the emulator continues to evolve with frequent updates and community contributions.

Lemuroid is an open-source emulator based on Libretro. It's designed to work on a wide range of devices, from phones to TVs, and to provide the best user experience on Android. It's completely free and without ads. Keep in mind not every device can emulate every console. A very powerful one is required for more recent systems such as PSP and DS and 3DS. This application does not contain any games. You need to provide your own legally owned ROM files. It originated from a rib of Retrograde, but graduated to a standalone project integrating LibretroDroid.

dracxterm is a terminal for Android. Open it and a shell is waiting. If you want a full Linux, the app installs Debian 13 or Kali inside its own storage, and you work as you would on a computer. The phone does not need root, and there is no account to create. Version 1.1.0 adds claw, an assistant you chat with in the terminal. It uses free model services that need no account, and you choose what it may touch on the AI (claw) page in xset. Programs like nano and htop look right, UTF-8 and CJK display properly, and you get five workspaces plus an extra key row for Ctrl, Alt, Esc and the arrows. Type xset to open the settings, now in six languages. Inside the distro, sudo, apt and dpkg work as usual, and sudo nmap scans. No ads, no trackers, and nothing is sent to the developer. The app goes online to download what you pick, to set up Python and Scrapling for claw's web browsing (you can turn that off), and to send your messages to a model service when you use claw.