MAME 0.231 was released

* Official - https://mamedev.org/release.html
* ARCADE64 - http://arcade.mameworld.info/
* HBMAME - http://hbmame.1emulation.com/
* MESS, MESSUI - http://messui.1emulation.com/
* MAMEUI - http://www.mameui.info/
* WolfMame - https://github.com/mahlemiut/wolfmame/releases

Other releases

* Mark 5 v1.8.1 [Hitachi BML3] - http://s-sasaji.ddo.jp/bml3mk5/download.htm

* MelonDS 0.9.2 [NDS] - http://melonds.kuribo64.net/downloads.php

* BGB 1.5.9 [GB] - http://bgb.bircd.org/

* Pantheon 10.414 [Multi-system] - http://bostjan-grandovec.si/Content/Download.htm

* Xebra (2021-04-23) [PSX] - http://drhell.web.fc2.com/ps1/index.html

* Cemu 1.22.11c [Wii-U] - http://cemu.info/

* RomVault 3.2.5 [Rom Manager] - https://www.romvault.com/

* Applewin 1.30.0.0 [Apple II] - https://github.com/AppleWin/AppleWin/releases

* Stella 6.5.3 [Atari 2600] - https://github.com/stella-emu/stella/releases

* Sameboy 0.14.3 [Gameboy] - https://sameboy.github.io/downloads/

* WinArcadia 27.02 [s2650-based] - https://amigan.yatho.com/

* mGBA 0.9.1 [GBA] - https://mgba.io/

* IV/Play 1.8.4.0 [Front End] - http://www.mameui.info/

WinArcadia 27.02 (Windows): 18 April 2021
AmiArcadia 27.02 (AmigaOS 3): 18 April 2021
AmiArcadia 27.02 (AmigaOS 4): 18 April 2021
AmiArcadia 27.01 (MorphOS): 30 March 2021
Super Bug Advance 1.3 (GBA): 11 September 2009

AmiArcadia and WinArcadia are multi-emulators of these machines:

* Emerson Arcadia 2001 console family (Bandai, Emerson, Grandstand,
Intervision, Leisure-Vision, Leonardo, MPT-03, Ormatu, Palladium, Poppy,
Robdajet, Tele-Fever, Tempest, Tryom, Tunix, etc.) (1982);
* Interton VC 4000 console family (Acetronic, Fountain, Interton,
Prinztronic, Radofin, Rowtron, Voltmace, Waddingtons, etc.) (c. 1978);
* Elektor TV Games Computer (1979);
* PIPBUG- and BINBUG-based machines (Electronics Australia 77up2 and
78up5, Signetics Adaptable Board Computer, Eurocard 2650, etc.) (c.
1977-1978);
* Signetics Instructor 50 trainer (1978);
* Central Data 2650 computer (1977);
* Astro Wars, Galaxia, Laser Battle and Lazarian coin-ops by Zaccaria
(1979-1981);
* Malzak 1 and 2 coin-ops by Kitronix (c. 1981);
* Chaos 2 computer (1983);
* Dolphin trainer (1977);
* PHUNSY computer (c. 1980);
* AY-3-8550/8600-based Pong systems (Coleco Telstar Galaxy, Sheen
TVG-201, etc.) (c. 1976-1977);
* Ravensburger Selbstbaucomputer aka 2650 Minimal Computer trainer (1984);
* MIKIT 2650 trainer (1978); and
* VTech Type-right machine (1985).

Features include: ReAction GUI, load/save states, windowed and full-
screen modes, CPU tracing, trainer, drag and drop support, graphics
scaling, automatic load/save of configuration/game, keyboard/joystick/
gamepad/paddle/mouse/trackball support, autofire, turbo mode, gameplay
recording/playback, sprite demultiplexing, help windows, source code,
real-time debugger, frame skipping, redefinable keys, save screenshots
(7 supported formats), ARexx port, network play (IPv4 and IPv6), real-time
monitor, locale support, game selection sidebar, text-to-speech, printer
output, artefacting, support for ZIPped games, clipboard support, palette
editor, tone retuning, high score management, force feedback, sprite
editor, 3D, assembler, CALM support, Scale2x/3x/4x and HQx filters,
animation recording (5 supported formats), sound recording (5 supported
formats), horizon dejittering, tape deck.

The supported languages are currently English, Dutch, French, German,
Greek, Italian, Polish, Russian and Spanish.

Changes since V27.01:
* BINBUG: added FPGA640 colour emulation.
* Miscellaneous improvements and bug fixes.

http://amigan.yatho.com/

* DSP 0.19 [Multi-system] - https://github.com/leniad/dsp-emulator

* RockNES 5.66 [NES] - http://rocknes.web.fc2.com/

* EightyOne v1.22 [Sinclair] - https://sourceforge.net/projects/eightyone-sinclair-emulator/rss?path=/

* Classic99 v399.043 [T.I.99/4A] - http://www.harmlesslion.com/cgi-bin/onesoft.cgi?1

* Cemu 1.22.10b [Wii-U] - http://cemu.info/