86Box v5.1 is released. 86Box is a low level x86 emulator that runs older operating systems and software designed for IBM PC systems and compatibles from 1981 through fairly recent system designs based on the PCI bus.

86Box Features:
Easy to use interface inspired by mainstream hypervisor software
Low level emulation of 8086-based processors up to the Pentium with focus on accuracy
Great range of customizability of virtual machines
Many available systems, such as the very first IBM PC 5150 from 1981, or the more obscure IBM PS/2 line of systems based on the Micro Channel Architecture
Lots of supported peripherals including video adapters, sound cards, network adapters, hard disk controllers, and SCSI adapters
MIDI output to Windows built-in MIDI support, FluidSynth, or emulated Roland synthesizers
Supports running MS-DOS, older Windows versions, OS/2, many Linux distributions, or vintage systems such as BeOS or NEXTSTEP, and applications for these systems

86Box changelog:
Update qt_vmmanager_main.cpp by @nelsonhef in #6041
partial fix of BSD builds by @dshadowwolf in #6044
fix the fix so Win32 doesn't break by @dshadowwolf in #6045
Implement portable mode by @dhrdlicka in #6046
Fix resizable window toggle on Windows by @Cacodemon345 in #6051
Minor updates for fi-FI and fr-FR by @nelsonhef in #6054
Fix conflicting mnemonic by @nelsonhef in #6055
Add ability to use custom EDIDs by @Cacodemon345 in #6059
Interlace changes of the day (August 26th, 2025) by @TC1995 in #6061
Fixes missing translations in EDID UI by @nelsonhef in #6067
Update pt-BR translation by @altiereslima in #6069
Port remaining PCem OpenGL renderer features by @Cacodemon345 in #6066
ESC/P: it's actually ESC/P 2, fill international character sets by @Lili1228 in #6073
Recalculate svga->fast on Voodoo 3/Banshee packed Chain4 mode toggles by @Cacodemon345 in #6074
ESC/P 2: Update strings and translations by @nelsonhef in #6077
qt_mainwindow.cpp: Cleanups by @Cacodemon345 in #6078
Make Specify Dimensions work again by @Cacodemon345 in #6079
Fix shortcuts not working with numpad when on fullscreen by @Cacodemon345 in #6081
Fixes for broken translation by @usergithub64 in #6085
Add ability to switch color scheme from system default on Windows by @Cacodemon345 in #6084
Fix minor typos by @nelsonhef in #6082
More accurate translation for Portuguese languages by @nelsonhef in #6087
Reflect language and color scheme changes in global config in manager and all its VMs by @Cacodemon345 in #6088
Fix possibly stretched appearance on manager preferences by @Cacodemon345 in #6089
Updates to compile 86Box under FreeBSD by @tjemg in #6091
Update ru-RU.po by @usergithub64 in #6090
Attempt to fix host serial passthrough on Linux by @Cacodemon345 in #6093
Update Italian translation by @Kappa971 in #6095
Fix the Dell XPS P60 and boot hangs on the Ambras by @win2kgamer in #6097
Update zh-CN.po by @BlueRain-debug in #6099
use SO_REUSEADDR on gdb stub socket by @sherpya in #6101
Fix default on sound master plus, and comments by @jriwanek in #6105
Pass through serial lines between serial port and emulator by @Cacodemon345 in #6106
Several machine fixes by @win2kgamer in #6108
Fix Force 4:3 Aspect Ratio not working if Resizable window is enabled (#6062) by @andresdelcampo in #6107
Fix building on MSYS2 with QT6 by @driver1998 in #6109
More machine and SIO fixes by @win2kgamer in #6110
S3 changes of the night (September 1st, 2025) by @TC1995 in #6114
Add BIOS selector and 1998 BIOS to the Rise R534F by @win2kgamer in #6113
Add support for parsing edid-decode text dumps by @Cacodemon345 in #6117
BIOS version names' corrections by @MaxwellS04 in #6116
Make EDID text dump detection more robust to avoid false positives by @Cacodemon345 in #6119
Some forgotten BIOS version name changes by @MaxwellS04 in #6120
Refactor custom EDID loading by @dhrdlicka in #6121
EEPROM and misc changes (September 3rd, 2025) by @TC1995 in #6124
Fix dynamic SCSI buffer window sizing causing SEGV by @awilfox in #6128
Minor cleanup on 53c9x code (September 7th, 2025) by @TC1995 in #6129
Major video changes and fixes of the day (September 7th, 2025) by @TC1995 in #6130
Adjust scsi_common_t structure definition to match the rest by @Cacodemon345 in #6133
MGA: Implement unscaled YUV blits for ILOAD by @Cacodemon345 in #6132
Restore the obsolete pause resume alt opcode. by @TC1995 in #6136
Add support for Trio3D/2X's 8-bit palette DAC by @Cacodemon345 in #6139
Add Two Baud Rates by @MaxwellS04 in #6138
Latest video fixes of the day (September 8th, 2025) by @TC1995 in #6140
Last minute changes for the high color S3 911/924 mode by @TC1995 in #6141
changing and adding Multitech machines by @bozoscum in #6145
Overriding changes (September 9th, 2025) by @TC1995 in #6146
Some misc cleanups and code formatting by @jriwanek in #6147
Add NEC PowerMate V2xxx/P2xxx! by @Verloren50000 in #6149
Gravis UltraSound: additions, improvements and fixes by @lemondrops in #6154
Last minute changes for the IDE hdd (September 12th, 2025) by @TC1995 in #6155
Fix RAM configuration for multiple machines + other misc changes by @MaxwellS04 in #6150
Finnish updates by @dgurney in #6158
Last-minute manager improvements by @lemondrops in #6159
Fix untranslated string by @nelsonhef in #6162

Download: 86Box v5.1
Source: Here