Theese are some links that I stole from other peeps that I thought were cool. Huge thanks to Griffen on spacehey for most of those.
A cooler, more complete and actively-being-updated "old web" revival services forum for cool people
REQUIREMENTS:
Stylus (chrome, firefox, pale-moon alternative)
Tampermonkey (the pale-moon alternative)
YOUTUBE:
yt2009 (late 2009-early 2010 frontend/mobile app patch, learn more here)
V3 (Vorapis 2013) (2013 script/extension) (Spacing Fix) (Live Chat Spacing Fix) (Player Tweaks)
Rehike (2016 frontend, needs to be setup)
ytm15 (2015 mobile app browser recreation, can be added to your homepage like an app)
NewPipe (2017ish mobile app)
TubeFixer (guide) (iOS 4-6 mobile app patch)
VerduraiOS (iOS 7-10 mobile app patch)
BitVide (early 2005 revival) (Youtube theme)
Tubelious (2005 revival) (Youtube theme)
Kamtape (2006 revival)
Bitview (2010 revival) (Youtube theme)
EraCast (2012 revival)
7kttube (2016 theme)
YouTube 2013 RESTORED! (For Rehike) (Brazilian/Portuguese translation)
TubeK15 (2015 theme for Rehike)
7kt Plus (2015 theme for 7kttube)
Youtube Mobile - Old Design (2013-2022)
YouTube Early 2018 Material Layout
YouTube Late 2017-Mid 2019 Polymer Colors
YouTube Late 2019-November 2020 Polymer Layout
PlayerTube (2007-2014 player)
Classic youtube player (2009 player)
youtube 2010-2011 html5 video player
2012 HTML5 Player (2011-2014 player)
Old Youtube Player (Flash) fixed (2014 player)
YouTube Player Classicifier (2017, use to make older player themes work better)
2015-2016 icons for youtube player classicifier
Old YouTube Studio Restorer (Pre-Jun 2024)
YouTube upload date (restores the upload date)
Youtube shorts redirect
Recreate old YouTube Footer!
Return Youtube Dislikes (Chrome/Firefox)
NexTube (Wii Channel patch)
GiveMiiYouTube (Wii U Channel patch)
FourthTube (Youtube on 3DS)
TWITTER:
Blips.club (2009 revival) (2007 theme) (Twitter theme)
Owler (2007 revival)
GoodTwitter2 (2016)
OldTwitter (2014-2016) (2013 theme)
Classic Twitter (2008-2011)
old twitter tweet buttons (2010-2021 tweet button embed)
FuckElon (2022 App)
2011 Twitter for Mastodon
Pliko (old Twitter inspired website) (2007 Twitter theme)
Pikker (2007 Twitter theme for PikiDiary)
REDDIT:
New Reddit Redirect (2018-2024)
Old Reddit Redirect (2008-2018)
2006-2022 reddit favicon
Classic Reddit (accuracy fixes for old.reddit.com)
Reddit Classic (2005-2007)
ROBLOX:
Roblox 2008 look (requires BTRoblox)
Roblox 2010 style (requires BTRoblox)
Roblox 2008-2011 theme (2008, 2009, 2010, 2011)
ROBLOX 2011 Classic (2011 roblox theme)
Roblox 2013 UI RECREATION (Beta)
2014-esque Roblox
Roblox Legacy 2015-2017
ROBLOX 2016 - a theme to mimic 2016
ROBLOX 2016 Avatar Editor Reconstruct
ROBLOX 2016 Sign Up Page Reconstruct (Read Desc)
Roblox Legacy Old Theme (2015-2019)
Old Roblox Font (SourceSansPro)
haydz6 (roblox blog archives)
Legacy Roblox Wiki (2012 wiki remake)
Bloxstrap (2006/2013 cursor, old sounds, old avatar editor background, old emoji types, old lighting, 2015/2020/2023 escape menu, pre-2022 materials, 2008-2014 launcher, 2008-2022 icon, app disabler)
Pre-Metaverse Styled Texture Pack (2015-2017) (texture packs need replaced every time roblox updates unless you use Bloxstrap)
ROLDBLOCK - 2006/2007 (texture pack)
Flex (2014-2019 game)
LegacyVerse (2015-2018/old Xbox game)
RetroStudio (2009-2015 game)
Super Nostalgia Zone (2008 game)
FWM (2006-2007 game)
Dynamite Blocks! (2005 game)
ROBLOX 2012 - BRICK HILL (2012 roblox theme for brick hill)
ROBLOX 2013 - Brick Hill (2013 roblox theme for brick hill)
Novetus (old roblox client launcher) (host servers with this)
Only Retro Roblox Here (Novetus alternative)
GOOGLE:
Gplex - Old Google Frontend (2011-2018 theme) (2010 theme) (Background theme)
Gplex Google Video Viewer Classicifer
2013 Google Revived (requires Gplex)
google2009 (2009 theme)
Revert to Google's Old 2012-2015 Favicon (google 2012-2015 favicon)
Loogle+ (2013 Google+ revival)
oldgoogle (1998, 2009, 2010, 2011, 2013, 2002 with a userstyle)
vanced (2000, 2001, 2002, 2009, 2010, 2011, 2013, 2015)
google2002 (just a homepage)
theplaceforitall Google X (2005 Mac Google experiment, just a homepage)
StartGoogle (Google 2012-2018 theme for Startpage.com)
DEVIANTART:
DeviantArt - V7 Style Profile Page
DeviantArt - V5 Style Profile Page
DeviantArt - 2000 Style Profile Page
DeviantArt - V7 Folder Buttons with Thumbnail
DeviantArt - V7 Folder Buttons
DeviantArt - V7 Error Message Page
DeviantArt - V6 Cornered Style Forum/Group
DeviantArt - Better Log In Screen
STEAM:
SFP (reenables steam skins)
OldSteam (2003 steam skin)
stmsrvemu (2003-2011 steam client)
Classic Steam (Steam 2016 theme for Playnite)
TUMBLR:
Old Tumblr Dashboard (Userstyle) (pre-2023 update Tumblr dashboard)
GPOY Theme (early 2010s tumblr dashboard tumblr profile)
Redux (early 2010s tumblr profile)
Fold (2007 tumblr profile)
Minimalist (2006 tumblr profile)
YourSpace (early 2000s myspace tumblr profile)
BootStrap for Tumblr (early 2010s twitter tumblr profile)
Tumblook (early 2010s facebook tumblr profile)
Facebook theme for Tumblr (mid 2010s facebook profile tumblr profile)
NEWGROUNDS:
RemoveSupporterPfp (for Newgrounds)
MISC THEMES/WEBSITES/SERVICES:
Spacehey (2005 theme) (2009 theme)
AnySpace (open source 2005 MySpace)
off---line (2007 facebook) (Facebook theme)
OpenVK (old VK, looks like facebook 2006)
InsaneJournal (livejournal)
Dreamwidth (livejournal)
classic blogger bar(experimental functionality)
img09 (2009 imgur frontend)
Angiru (Orkut)
Crapeando (Taringa!) (2014 theme) (NSFW)
Peluchan (Taringa!) (NSFW)
VineRedirect (redirects Vines API to any endpoint)
LegacySnap (fixes 3.1/5.0.3/7.0.6/9.1.3 versions of the SnapChat iOS app)
bingbinngo (old Bing theme for DuckDuckGo)
Waosen (2009 bing)
Ytoo! (2003 yahoo)
oldyahoo (Yahoo, 2012 and 2013)
old Yahoo Email (basic html)
old AOL Email (basic html)
Hotmail Retro 2002 (Changes Outlook to Hotmail from 2002)
Setting up Outlook Mail 2007, 2003 and 2000 in 2024
oldfirefoxstart (firefox 3.6 homepage)
Firefox Start Page Reproduction (2005-2009)
OneCare Rewritten (Windows Live OneCare)
RABB.IT THEME FOR HYPERBEAM (2017 rabb.it theme)
SkeuoCord (Discord)
DTM-2K (Windows 2000 Discord)
DTM-08 (Basically the same as SkeuoCord, except this one has round PFPs)
DTM-16 (2016 Discord)
DTM-18 (2018 Discord)
OLDCORD (2015-2016 Discord)
Hummus (2017 Discord)
Ripcord (alternative Discord/slack client, looks more "old web" to me)
DiscordMessenger (Discord client for Windows 2000-XP)
iOS Discord Classic (Discord client for iOS 5-6)
Fix Discord CDN (makes Discord images work like they did before the 2023 update) (Chrome only)
AeroChat (Windows Live Messenger 9 client for Discord)
Discord Network Messenger (MSN Explorer 10 theme for Discord)
Escargot (MSN)
OMessager (another MSN)
Miranda NG (Miranda IM)
AOLEmu (another AOL)
Runningman Network (another AOL)
Nina (Q-Link, Classic AOL, AOL IM, ICQ, and Yahoo Messenger)
pfire (Emulated XFire server)
xfyre (another Xfire server)
WBS-Retro (90s Chatroom)
Skype Classic (Skype 8.102)
PintoIM (Skype IM 0.9.7)
OmegleWeb (Omegle revival) (NSFW)
smashdojo.neocities (Smash Dojo recreation)
WiiLink24 (Wii Channels)
WiiLink WFC (Nintendo Wifi Connection Revival for Wii)
Wiimmfi (Nintendo Wifi Connection Revival for Wii, DS)
Pretendo (Nintendo Network revival for Wii U, 3DS)
ShopDeck (custom Nintendo 3DS eShop)
SatellaZone (Nintendo Zone Revival)
Insignia (Classic Xbox Live Revival)
PS Rewired (PS2/PSP/PS3 Online Revival)
PS2Online (PS2 Online Revival)
Community OUYA API server (Ouya servers)
xBand revival (SNES and Genesis WIFI)
Satellaview+ (Satellaview Revival)
Randnet+ (Nintendo 64 DD WIFI)
Dreamcast Live (Dreamcast WIFI)
333networks (GameSpy Revival)
OpenSpy (other GameSpy Revival)
Project Beacon (LBP1-3/LBPVita online features)
LittleBigRefresh (LBP custom servers)
Schthack PSO (PHANTASY STAR ONLINE servers)
pkmnclassic (Pokemon focused Wiimmfi, basically)
entralinked (game sync functionality for gen 5 of Pokemon)
rverse (Miiverse Revival)
MIIVERSE THEME FOR JUXTAPOSITION (2013 Miiverse theme for Pretendo Miiverse)
Sudomemo (Flipnote Hatena)
Kaeru Gallery (Flipnote 3DS)
Kaeru Duel (Pokemon Duel)
Kaeru WFC (Nintendo Wifi Connection revival for DS)
Kaerutomo (Miitomo)
Dawnshard (Dragalia Lost)
Skelux (list of archived nintendo flash websites/games)
cometobservatory (recreations of Super Mario Galaxy/Super Mario Galaxy 2's websites)
Ruffle (Flash Emulator)
Toontown Rewritten (old toontown)
Toontown: Corporate Clash (other old toontown)
Toontastic (other old toontown)
Toontown Archive (various versions of Toontown)
Old School RuneScape (official 2007 RuneScape)
Vidyascape (another old RuneScape)
Open RuneScape Classic (older RuneScape)
2004Scape (2004 RuneScape)
2009scape (RuneScape 2 remake)
HDOS (2009-2011 theme for Old School RuneScape)
Darkan (late 2012 RuneScape)
Waddle Penguins Island (Club Penguin Island remake)
Nicktropolis Timewarp (Nicktropolis remake)
MSPRetro (2009 MovieStarPlanet)
Moshi Online (Moshi Monsters remake)
OpenFusion (FusionFall revival)
We the Pixies (Pixie Hollow Revival)
StyleDollz (DollzMania Remake)
BlockStarPlanet Legacy (old flash BlockStarPlanet client)
Leopets (better Neopets classic)
Grundo's Cafe (another Neopets classic)
virtu.pet (another Neopets classic)
Levianthan Myth.com - Classic 2008
VMK Legacy (Disney's Virtual Magic Kingdom Remake)
Habbo Hotel: Origins (official Habbo Hotel 2005)
Habbo.bz (Habbo Hotel 2006)
panfu.us (Panfu revival)
Bin Weevils Rewritten (Bin Weevils revival)
C&C:Online Launcher
(Command & Conquer: Generals / Zero Hour, Command & Conquer 3:
Tiberium Wars / Kane's Wrath, and Command & Conquer: Red Alert 3
servers)
T3A:Online Launcher (Battle for Middle-earth and Battle for Middle-earth II / The Rise of the Witch-king servers)
Ohka BOTS (BOTS!! remake)
MxoEmu (The Matrix Online Server Emulator)
Destination Home Online (Playstation Home revival, in closed beta)
YoWorld (YoVille revival)
The Social Wars preservation project
The Social Empires preservation project
Pet Pals (Pet Society revival)
JM-Server (Jewelry Master private server)
oldsu! (2009 osu!)
Titanic! (2008-2014 osu! private server)
SuperTux Classic (SuperTux 0.1.0-0.1.4 remake)
Pangya Reborn (Season 8 PangYa private server)
PangYa Brasil ( Brazilian Season 4 PangYa private server)
MabiPro (2008 mabinogi)
MapleLegends (old MapleStory)
DragonBall Online Global (DragonBall Online revival)
DBOUniverse Revalations (DragonBall Online revival)
Project 1999 (1999-2001 EverQuest)
Whitemane (Wrath of the Lich King (2008)/Cataclysm (2010) WoW private server)
Eden (Treasures of Aht Urhgan (2007) Final Fantasy XI private server)
OpenFK (Open Source U.B. Funkeys revival)
Mobsters United (Old MySpace game)
Retro Brawl (2018 Brawl Stars)
OldClash (Old Clash of Clans)
Spongebob Moves In! Install Guide (guide to installing Spongebob Moves In! after the shutdown) (Necessary Files)
GMDprivateServer (Geometry Dash 1.0-2.2 private server)
Garfield+ (Garfield 2004 mod, adds windows 11 support)
Plutonium (private servers for COD WaW/BO1/BO2/MW3)
Alterware (private servers for COD MW2/Ghost/Advanced Warfare)
POSTAL 2: Classic (pre-2004 Postal 2 mod)
Restored 2007 Ending (old Portal ending)
Half-Life 2 2004 Pack (reverts post-Orange Box updates)
Classic Garry's Mod (Garry's Mod 9-12 mod)
Toybox Collection (several Toybox addons for newer Garry's Mod)
Pre-Fortress 2 (classic TF2 sourcemod)
Betacraft (old minecraft launcher/server)
AlphaPlace (minecraft beta 1.1_02 server)
Classicube (classic minecraft recreation)
Moderner Beta (beta 1.8-release 1.17.1 minecraft world generation) (Requires Fabric API)
Custom Fog (old minecraft fog) (Requires Fabric API)
Custom Stars (old minecraft stars) (Requires Fabric API and Cloth Config)
Custom Void (old minecraft void) (Requires Fabric API and Cloth Config)
Legacy Reborn (old minecraft console edition mod for java)
Legacy Edition Resources (old minecraft console edition resource pack for java)
Legacy Edition Mini Games (old minecraft console edition mini games for java, currently not compatible with Re-Console, in closed alpha)
Vanilla Deluxe: Legacy Console UI (old Minecraft Console UI for Bedrock 1.20.80)
OLauncher (old minecraft launcher)
ReMinecraftPE (old minecraft PE)Time Travel: Old and Retro (old Terraria texture pack)
Consolaria (old Terraria console/mobile content for tModLoader)
Heartbeataria (old chinese Terraria content for tModLoader)
Voobly (MSN Gaming Zone)
Friv Reborn (classic friv)
Friv Legend (classic friv without flash)
Sploder Launcher (flash gamer maker website revival)
FlashArch (flashpoint in browser)
Gumball Character Creator Game (official TAWOG flash game, requires flash)
Scratch Addons (chrome/firefox) (tut to make scratch 3 Look Like scratch 2) (tut for Scratch 3 look like Scratch 1.4 (almost)
Scratch 3.0 to Scratch 2.0 WORKING
FlashThemes (2011 GoAnimate)
GoAnimate for Schools remastered
Wrapper Offline (GoAnimate remake)
3DMMForever (3D Movie Maker for modern OSes)
PicMix (blingee)
Fanfiction.net Classic (Post-2007)
FANFICTION.NET THEME FOR AO3 (old FanFiction.Net theme for AO3)
One Point Faux (old AO3 skin)
My Retro TVs (50s-00s TV)
Toonami Aftermath (same concept, just Toonami)
Weatherstar 4000+ (90s weather channel)
WebTV Redialed (WebTV revival)
minisrv (WebTV revival)
Pandora Classic (2015)
WACUP (old Winamp)
Spotiamp (Winamp client for Spotify)
ZuneNetAPI (Zune API remake)
SNACKLISH REBORN (Snickers Snacklish Translator Recreation)
Old Myshows.me (2019)
Rebble (Pebble services)
NMS Ceefax (BBC Ceefax revival)
ARD Text (German Ceefax)
NOS Teletekst (Netherlands Ceefax)
Samsung NX camera to Mastodon bridge (Guide to getting Samsung NX Camera's back online)
Jackie Chan Movie Website Archives (Police Story 3: Supercop (1996), Legend of The Drunken Master (2000), Twin Dragons (1999), Thunderbolt (1995), Operation Condor (1997))
GetLazy Web Archive (LazyTown flash game/fansite/website archive)
lazytown2003 (recreation of the 2003 LazyTown website)
Retro Kids (2006/2008 Latin American Discovery Kids website archive)
Salt Lake 2002 website archive
Neocities (Geocities revival)
Nekoweb (Neocities alternative)
Frogfind (displays everything you search in basic HTML, apparently looks "late 90s")
Wiby (searches for non-commercial websites, apparently looks "late 90s")
TheOldNet (wayback machine alternative)
literally every other website:
Redirector (lets you redirect websites to other websites, useful for redirecting websites to revivals or wayback archives) (chrome, firefox, pale-moon alternative)
Wayback Proxy (less work for more websites covered, obviously only uses wayback archives so it's way less functional)
Wayback Machine Toolbar Remover
Wayback Machine Image Fixer
Protoweb (late 90s-early 00s proxy)
A totally awesome list of "old web" themes for your computers, browsers, and other stuff too
Pre-XP:
Project 2k (modded Windows 10)
simpleclassictheme (free alternative)
Enable Classic Theme by handle method (free alternative) (transparency fix) (browsers fix) (maximized fix) (UWP fix) (list view fix)
RetroBar (Taskbar)
OpenShell (Start Menu)
Outlook Express 6.0 (98 Mail)
Hover! (classic 95 game)
Classic Windows Applications (98 CD Player, 98 Notepad, 98 Volume Mixer, 98 Wordpad, 98 Telnet)
Classic Windows Applications 2 (98 Games, 98 Wordpad, Writer, 98 Notepad, CD Player, Deluxe CD Player, 98 Sound Recorder, Mplay32, 98 Master Volume, 98 Telnet)
Windows Millennium Remote Control
Windows Movie Maker 1.0 (Windows ME)
wcecl (Windows CE apps on modern OSes)
Winevdm (16x apps on modern Windows)
Icons of Win16 apps in Explorer
Misc Windows (Assortment of Windows 1.01/2.03 applications)
Explorer 32px Icons (old Medium Icon size)
winfile (Windows 3.1 file manager)
Windows NT 3.1 Apps (Assortment of Windows 3.1 applications)
Windows 3.x Program Manager for Windows 7, 8, 8.1 and 10
Progman (3.x Program Manager recreation)
Windows NT 4.0's Welcome program
No Run Icon (removes the windows icon from the Run dialog box, like XP and earlier)
Chicago95 (Windows 95 theme for Linux)
B00merang-Project (1.0/2.0/3.11/95 theme for Linux)
Hotdog LINUX (Windows 3.1 Linux OS)
Chicago95 theme for LibreOffice (Windows 95 Word theme)
Windows XP:
Legacy Update (for Windows XP)
Windows eXPerience (modded Windows 10)
WindowBlinds (cost money, comes with a free trial. XP theme)
Luna10 (free alternative)
XP Theme (free alternative)
RetroBar (Taskbar)
OpenShell (Start Menu)
Windows Media Player 8 skin for Windows Media Player 12
XP Photo Viewer (set it to be used by default)
Classic Desktop Icons (2000-XP icon select effect)
Classic Windows Applications (XP Sound Recorder, XP Volume Mixer, XP CD Player, XP End of Life Warning)
Classic Windows Applications 2 (XP DXDiag, XP End of Life Warning)
XP Open With (unstable, use with caution)
SpaceCadetPinball decomp (3D Space Pinball)
MSN-Explorer-Enabler (Reenables MSN Explorer 6/7)
Classic Quicktime Player VLC Skin
VLC Skins (Authentic Media Player/General XP Skin)
Windows Media Player 9 (bundled with XP SP2+)
Windows Media Player Skins Archive (Windows 9x-XP media player skins)
FindeXer (file explorer, hard to download, requires running a bat file as admin in system32 to work, avoid if you can. Theming guide here)
Classic File Picker dialog (2000-XP)
Explorer 32px Icons (old Medium Icon size)
No Run Icon (removes the windows icon from the Run dialog box, like XP and earlier)
xfce-winxp-tc (themes, cursors, sounds, applications, and shell for XFCE)
RedmondXP (XP theme for GTK and XFCE)
XPQ4 (Windows XP Linux distro)
B00merang-Project (XP/XP Classic theme for Linux)
Vista/7:
Extended Kernal (lets modern apps work on Vista)
Windows 10to7 (modded Windows 10)
Windows Vibranihorn RC 2.1 (modded Windows 10, looks like Vista)
Reloaded7 (modded Windows 10)
Classic 7 (modded Windows 10)
revert8plus (windows 7 transformation pack for win 8-11)
Windows 10(1809) to 7 Transformation Pack
Windows 10 (21H2-22H2) to 7 Transformation Pack
MondySpartan's Windows 10 to Vista Guide
WindowBlinds (cost money, comes with a free trial) (Vista/7)
BasicThemer6 (free alternative)
OpenGlass (Aero Glass alternative for Windows 8/Windows 10)
DWMBlurGlass (WindowBlinds alternative for Windows 10/Windows 11)
StartIsBack (cost money, 7 taskbar for 8/10, incompatible with WindowBlinds) (accuracy tweaks)
StartAllBack (cost money, same thing as StartIsBack but for 11, incompatible with WindowBlinds)
RetroBar (Taskbar, free alternative for Vista)
OpenShell (Start Menu, free alternative for Vista)
Windows Media Center 7/Vista (installBLUE.cmd for the blue themed version, choose installGREEN.cmd
for the green themed version. Blue is recommended if you're going for
accuracy because the Green version was only officially installable on
Windows 8/8.1. If you don't see it on your PC after you install it
restart your PC.) (thanks Quentin)
Windows Media Player 12 VLC Skin
8GadgetPack (Weather Gadget fix)
Windows Vista Sidebar for windows 8, 10, & 11 (8GadgetPack alternative)
Windows Vista/7 Gadgets (8GadgetPack alternative)
Aerexplorer (oldnewexplorer alternative)
Control Panel Restoration Pack
Inkball (missing from the link above)
Classic Wordpad (7-10)
Classic Notepad (7-10)
Restoring classic volume context menu options (Windows 7 Volume Control context menu)
WinFlip (Vista 3D Flip)
Vista Security Center and Firewall applets
Vista Tablet PC & Pen & Touch CPL
7/Vista Keyboard Layout Manager
Vista Network Activity Indicator
Microsoft SharePoint Designer 2010 and Microsoft Office Picture Manager
The Green Button (Windows Media Center theme for Kodi)
AEROTHEMEPLASMA (7 theme for KDE Plasma)
B00merang-Project (Vista/7 theme for GTK/GNOME)
Office 2013 theme for LibreOffice
Windows 8/8.1:
ProjectBlue (modded Windows 10, looks like 8.1)
Metro 10 v2 (modded Windows 10, looks like 8.1)
Windows 10x8 (modded Windows 10, looks like 8.0)
WindowBlinds (cost money, comes with a free trial) (8.x)
Aero10: Metro (free alternative)
Center Titlebar (titlebar like in win 8.x)
Windows 8 Start Screen Update + Download (requires Start11 in Windows 10 Style)
WinMetro (free alternative, must be set to windows 7 compatibility mode)
Control Panel Restoration Pack
Add Features (from 8.1)
Location Settings Control Panel (from 8.1)
Performance Information and Tools (from 8.0)
Restoring classic volume context menu options (Windows 8/8.1 Volume Control context menu)
Charms Bar Port (Windows 8 Charms Bar for Windows 10/11)
B00merang-Project (8/8.1 theme for GTK/GNOME)
Windows 10:
RevertSV (modded Windows 11)
ExplorerPatcher (taskbar for Windows 11, does not work on newer versions)
Windows 10 1511's Security and Maintenance Control Panel
Classic Display Settings (from 1511)
Restoring classic volume context menu options (10056 Volume Control context menu)
Legacy Search Bar (Search Bar from 1909 and earlier)
Disable rounded corners in Windows 11
B00merang-Project (Windows 10 theme for GTK/GNOME)
Mac:
MacProxy Plus (lets modern websites work on very old Mac systems)
system.css (design system for very old Mac systems)
OS (Old School) (cost money, Mac 1-4 theme)
AquaLickX (older Mac OS X UI elements for modern macOS)
Classic Mac OS Finder (for Windows)
Retroactive (older versions of various Mac programs)
Front-Row (restores partial Front Row functionally on Mac OS Lion/Mountain Lion)
macOSLucidaGrande (old font for modern Mac systems)
ViFind (Yosemite-Catalina Menu Bar for Windows)
Lickable Menu Bar (Mavericks/Catalina/Tiger Menu Bar for modern Mac systems)
cDock (cost money, old Mac dock, version for Apple Silicon)
Mac OS X Yosemite Rocketdock theme
iTunes-Experiment (iTunes 10 recreation, needs to be compiled from source)
WinLaunch (Mac Launchpad for Windows)
Leopard-Mavericks Photobooth for Windows
Mac OS X Tiger Front Row for Windows
Mac OS X Address Book and Fontbook for Windows
Mac OS X System Preferences for Windows
Mac OS X Parallels Desktop for Windows (move Parallels folder to C: drive for the best effect)
Mac OS X CD/DVD Burning App for Windows
mfslives (allows modern Mac systems to run MFS images and floppy disk)
Executor 2000 (allows modern Mac systems to run older Mac applications)
Platinum9 (Mac OS 9 theme for Linux)
StyleProject (QT4/QT5 theme for Linux)
Yosemite Gtk Theme (Yosemite theme for Linux)
B00merang-Project (Leopard/Mavericks/Cheetah/Catalina/Catalina Dark/Mac OS 9/Mac System 4 theme for GTK/GNOME)
Hotdog LINUX (Classic Mac OS/Aqua Mac OS Linux OS)
Phones:
OldOS (old iPhone theme, technically an app)
iOS 6 Full Theme (iOS 6 theme for modern iOS)
Ultimate iOS 6 Theme Setup Guide (iOS 6 theme for jailbroken iOS)
Checkmate, Store! (allows older iOS devices to download new apps)
Electimon's Repo (allows older iOS devices to download new apps)
AppSync Unified (allows iOS 5+ devices to downgrade apps)
MapsX (fixes iOS 6-7 Maps)
EarthX (fixes Google Earth on old iOS devices)
iTunesStoreX (fixes iTunes stores for old iOS devices)
StoreLayoutsFix (fixes iTunes layout issues on iOS 6)
Modern 6 SE (iOS 6 Icons, Sounds, Wallpapers)
Espier Screen Locker i6 (iOS 6 lock screen for Android)
Espier Screen Locker 7 Pro (iOS 7 lock screen for Android)
Espier Dialer i6 (iOS 6 dialer for Android)
Espier Dialer 7 Pro (iOS 7 dialer for Android)
Espier Control Center 7 Pro (iOS 7 control center for Android)
Espier Music Controller (iOS 6 music control for Android)
Espier Reminders (iOS 6 reminders for Android)
Espier Clock (iOS 6 clock for Android)
iPhony (iOS 6 keyboard/mail for Android)
iLauncher (iOS 6 theme for Android)
Launcher 10 (Windows Phone 10 theme for Android)
Metro UI Launcher 8.1 (Windows 8.1 Tablet theme for Android)
Groove Launcher (Windows Phone 8 theme for Android)
Retiled (Windows Phone 8.x theme for Linux phones)
Lynn Launcher (MeeGo 1.2 theme for Android)
Meeye, Classic MeeGo Icon Pack
Belle ui for Klwp/Kwgt (Symbian launcher for Android, requires KLWP or KWGT)
Donut Launcher 1.3 (Android 1.3 theme)
Launcher 4.4.2 (Android 4.4.2/KitKat theme)
Android 4.4.4 (KitKat) Launcher
Android 5.0 (Lollipop) Launcher
Android Lollipop theme for iOS
Launcher <3 (Android 7-11 theme)
Galaxy S Launcher (Samsung Galaxy Touch Wiz theme for Android)
Nova Launcher (Android launcher, not old inherently, needs themed)
Holo Launcher (old Android launcher)
Android 4.0, 4.1 and 4.4 icons
Honeycomb Clock (Android 3.x clock)
Ice Cream Sandwich Clock (Android 4.x clock)
Android 1.6 Donut Global Clock
Android 1.6 Official Example Games
Nexus Revamped (Nexus Live Wallpaper for newer Android phones)
Android 4.x Phase Beam Wallpaper
Android 4.x Black Hole Wallpaper
Home Screen Tips widget for modern Android
ReLiveWP (restores some functionality to Windows Phone 7/8)
Live Store (Windows Phone 8.1 store)
Windows Phone 7 Apps for Android
Install with Options (removes limit on old apps for Android)
Tango (allows new Android devices to run older apps)
J2ME-Loader (allows new Android devices to run older Java apps)
WPR (allows new Android devices to run older Windows Phone games)
touchHLE (allows new Android devices to run older iOS games)
EKA2L1 (allows Android devices to run Symbian OS/N-Gage apps)
Nofun (allows Android devices to run Mophun apps)
Mythras (allows Android devices to run Mythroad apps)
BREWEmulator (allows Android devices to run Mythroad apps)
HTC Sense Apps port for All Devices
Other:
DiskClick (old HDD clicking sounds)
MikeBonnell.com (1997-2004 Desktop Wallpapers)
Version Spoof (Fakes the Windows Version reported to applications)
Classic context menu on Windows 11
Classic Task Manager (applies to literally everything before windows 10)
Windows Journal (various Windows OSes had this)
Winaero Tweaker (various tweaks for Windows 10/11, allows for Classic Shortcut Icons, Windows 7 Photo Viewer, etc.)
Eradicate Immersive Menus (restores various old context menu themes for Windows)
Classic Task Dialog Fix (makes the buttons in task dialogs taller like Windows 8.1 and earlier)
Old This PC Commands (forces some commands to use Control Panel instead of Settings, doesn't work on Windows 11)
NTVDMx64 (MS-DOS apps on modern Windows)
VAIO Gate Dock for any computer (VAIO Gate for non-VAIO computers)
2ine (allows Linux devices to run OS/2 applications)
NsCDE (90s desktop environment)
CDE (90s desktop environment)
RetroCoolTerm (retro terminal theme for Linux)
GNUstep (NeXTSTEP theme for Linux)
OneStepBack (NeXTSTEP theme for GTK)
Human theme (old Ubuntu Human theme for GTK)
B00merang-Project (old ChromeOS/Unity 7/Unity 8/Solaris 8/Solaris 9/BeOS/Human/Adwaita/Old Fuchsia theme/80s Terminal/OS/2 Warp 4 for GTK/GNOME)
Hotdog LINUX (Atari ST/Amiga Linux OS)
DS theme for 3DS (if the visuals are broken, find another one, make sure to keep the music from this one) (3DS needs to be hacked)
DSI theme for 3DS (1/2/3) (3DS needs to be hacked)
DS Splash Screen for 3DS (3DS needs to be hacked)
DSI Splash Screen for 3DS (3DS needs to be hacked)
Wii theme for Switch (Grey/Blue) (Switch needs to be hacked)
PS2 Legacy Theme for PS4 (cost money, very cheap)
PRENXE v2+ (Xbox 360 Blades theme for Freestyle Dashboard)
AuroraNXE (Xbox 360 NXE theme for Aurora)
Proto Dash (Blades/NXE/Kinect theme for Proto Stealth)
Original XBOX Legacy theme for Series X
XBOX 360 Blades theme for Series X and Xbox One
TetradUI (XBOX 360 Blades theme for Kodi)
DroidTV (Android TV 2014-2015 theme for Kodi)
Dos Terminal (MS-DOS theme for LaunchBox)
Mini Consoles Theme - RetroSai Nostalgia - Form over Function (Xbox 360 Blades/Xbox 360 Metro/Xbox One/PS3/PS4/Wii/Wii U/Famicom Classic/NES Classic/SNES Classic/Switch theme for LaunchBox)
NESiCAxLive Theme (NESiCAxLive theme for LaunchBox)
New Pegasus Experience Theme (Xbox 360 NXE theme for Pegasus)
switchOS (Switch theme for Pegasus)
Modern (Switch theme for EmulationStation)
AltHome (2018-2020 webOS TV theme)
Browsers:
Echelon (Firefox 4-29 theme)
Zap's Cool Photon Theme (Firefox 87 theme)
Pale Moon (more visually accurate firefox. Themes (including Firefox 1.0, 2.0, 3.0, Chrome, Opera and Netscape 4), IE 9/10 theme, Netscape 8 theme)
MyPal (based on Firefox Quantum, 3.0 theme)
OtterBrowser (Opera 12.x)
Redmond-Firefox (IE 6-8 theme for Firefox)
MSFX (IE 5 theme for Firefox)
IE 5 Mac Skin, OSX Safari Skin (2 different Firefox themes)
eXPeriencefox (actually good IE 6 theme)
07fox (actually good IE 7 theme)
rinFox (IE 7 and 8 theme for Firefox)
BeautyFox (IE 9, 10 and 11 theme for Firefox)
Geckium (Chrome 1-6, 11, 21, 25, 47, 58 theme for Firefox)
Basilisk (looks like chrome/Firefox)
360chrome (without the spyware. old chrome theme)
ChromifyVivaldi (Chrome 49 theme for Vivaldi)
Classic Blue Theme (back to 50) (old Chrome colors)
Modoki-Firefox (Modern Modoki Netscape theme for Firefox)
K-Meleon (Mozilla's Gecko layout)
SeaMonkey (made with old Firefox source code)
Retrozilla (old Firefox, designed for the Classic style)