Mirakel by Anatolij Zelenin and Georg Semmler is an open source TODO-List App for Android.

https://play.google.com/store/apps/details?id=de.azapps.mirakelandroid

Speccy is a Sinclair ZX Spectrum home computer emulator. It will run software written for Spectrum 16k, 48k, 128k, +2, +2A, +3, Timex Sinclair, Pentagon, and Skorpion home computers.

Changes:

* Finally fixed accelerated video when Android 2.x device rotated!
* Added SPACE and ENTER buttons to the virtual joystick.
* Added support for analog controls found on generic Bluetooth gamepads.
* Now also showing status bar when action bar enabled.
* Flick finger down to show status bar, even if you have no action bar.
* Merged Freeze and Restore menu items into a single Freeze/Restore dialog.
* Collapsed all advanced menu items into Advanced submenu.
* Made NetPlay a checkable menu item.

https://play.google.com/store/apps/details?id=com.fms.speccy

fMSX is an MSX home computer emulator. It will run software written for MSX, MSX2, and MSX2+ computers. Before running fMSX, make sure you place the following MSX system ROMs onto your SD card: MSX.ROM MSX2.ROM MSX2EXT.ROM DISK.ROM.

Changes:

* Finally fixed accelerated video when Android 2.x device rotated!
* Fixed BACKSPACE, DELETE, and SELECT keys on the virtual MSX keyboard.
* Stopped virtual joystick from disappearing when using virtual keyboard.
* Added support for analog controls found on generic Bluetooth gamepads.
* Now also showing status bar when action bar enabled.
* Flick finger down to enable status bar.
* Fixed “Other Apps” link in the “What’s New” dialog.

https://play.google.com/store/apps/details?id=com.fms.fmsx

RepeatyBots by Jayenkai is a simple game of repetition. Tap the bots in the order shown to score points. Try to remember them all!

https://play.google.com/store/apps/details?id=com.AGameAWeek.RepeatyBots

nds4droid by jeffq is a free, open source Nintendo DS emulator written for Android smartphones. It is based off of the excellent emulator DeSmuME. The source code can be found on sourceforge.

Changes:

* Fixed a bug in the new ROM browser which would cause a crash when a ROM that couldn’t be opened was present on the device
* The new ROM browser now only recursively searches five directories deep on the external storage

http://jeffq.com/blog/nds4droid/

Instead was designed to interpret the games that are a mix of visual novels, text quests and classical 90’s quests. Available for a lot of systems amongst them Android and Symbian OS.

Changes:

Changelog in Cyrillic font available on its release thread.

http://instead.syscall.ru/2013/07/instead-1-9-1/

nds4droid by jeffq is a free, open source Nintendo DS emulator written for Android smartphones. It is based off of the excellent emulator DeSmuME. The source code can be found on sourceforge.

Changes:

* Added a new, much sleeker ROM browser (thanks Alexander P.)
* Added an autosave feature, on by default, which will save the game’s state periodically

http://jeffq.com/blog/nds4droid/

In C3ntipong by Jayenkai you have to hurl your ball towards the oncoming Centipede swarms to smash them into pieces, then bounce their body parts back towards them, to create a chaotic mass of flying pods.

https://play.google.com/store/apps/details?id=com.AGameAWeek.C3ntipong

In Spiders vs Toothpicks by Jayenkai you have to do the following: Grab a toothpick, aim it from the center-slingshot, and kill as many Spiders as you can within a minute.

https://play.google.com/store/apps/details?id=com.AGameAWeek.SpidersVsToothpicks

DangerBots is an Android game by Jayenkai. Collect mines and then detonate them from a distance to destroy the walls of the arena. Seek out additional mines, coins and health as you battle against the might of the DangerBots!

https://play.google.com/store/apps/details?id=com.AGameAWeek.DangerBots