Here’s a list accurate of 2024.01.01 of all Grids available through Firestorm OpenSim version, available here.
https://phoenixviewer.com/app/fsdata/fs_grid_builder.html
3DLES
3rd Rock Grid
3World
4Creative
A Dimension Beyond
A Virtual World
Accueil Dracsoom
Admeja
Adreans-World
Adult Life
AI Grid
AIRE Mille Flux
Alecia Grid
Alexa World
Alife Virtual
Alterlifes
Alternate Metaverse
Alterworld Grid
Angel Souls
Ankabi
Ansjela Grid
AnSky
Arcadia Asylum
Ares World
Argentoratum
Argofantasy
Arielle’s Grid
Arkham Grid
ArtDestiny
Assassin Guard
Astralia
Atlantide
Atlantis
Atlas Grid
Ausgrid
Avacon
AvatarLand
AvatarLife
Avie Realm
AviWorlds
BachmansWorld One
Baller Nation
Barefoot Dreamers
Bernicia
Beta Technologies
BigOne
Binders World
Bridgemere
Bridger
Bubble Grid
Butschiland
Caelum Alpha
Cajun Grid
CandM World
CandorsRPWorld
Carima Welt
CatGrid
CLC grid
Clone Fantasy
Coffee Grid
Conectados Grid
Cooperation Creative
Counter Earth
Cozy Comforts Grid
Craft World
CreaNovale Grid
CyberCity
CyberDataStorm
Czech Welcome Centre
Dajas Grid
Dark Heaven
Darkheart’s Playground
Decadence
Deep Playa
Destiny Grid
DigiGrids
DigiWorldz
Discovery Grid
Dorena’s World
DowGrid
Dragonz Kin Territories
DreamNation
Dynamic Worldz
E-LIVE Virtual World
Edge of Reality Grid
EdMondo
EducaSim
Eenhgrid
Eleutherias
Endivatomic World
Equinox Grid
Escape 2 Reality Grid
EscapeLands
Esfera Split
Esfera Virtual
Eureka World
EVA Park
Expanse
Fae Farms
Fearless Mysteries
Fire and Ice Grid
Forgotten Worlds
France RP
Free Life
Freedom Grid
Fresh MetaVers
Freya’s Shadow World
Friends Grid
FuoriGrid
Furry World
Galactic Virtual
GBG World
Genesis Roleplay Grid
Gentle Fire Grid
GerGrid
German World Grid
Ghost Area
Golden Palace Gaming
Goldor Grid
GorGrid
Grid Nirvana
Grid Racers
GridExperience
GridMania
Groovy Verse
Here Grid
Herederos Grid
Hermopolis Chimera
Homeland
Hosting4OpenSim Test Grid
Humble Grid
Hypergrid City
I Love You Grid
Icelady Grid
Ignis Fatuus
IMA Metaverse Depot
Immersion Tools
Infinite Grid
Ipsofacto
JamGrid
Japan Open Grid
Jaytopia
Joe’s Place
jOpenSimWorld
Jungle Friends Grid
Kantarobasta Grid
Kater and Friends
Kindred Spirits World
Kinky Haven
Kishaki
Kitely
KittyBlue
Kokomo World
KubwasWelt
Kyle Archipelago
La Grilla de Don Javi
Lagniappe Grid
Lanf Of Bree
Langalf’s Demesne
Little Big City
Littlefield
LoboWorld
Logicamp
Lonetree
MAGA Grid
Majickal Life
Mare Grid
Mathesis
Matrix
Maze of The Mind
Mentis Pacem
Metaverse Concept
Metaverse Dimensions
Midway
Migrating Coconuts
MisFitz Grid
Mobius Grid
Monarch Gardens
Moonlighting Grid
Moonrose
Morada Grid
My Virtual Beach
Mysterious Grid 2
Mystic Bermuda
Nabila Grid
Naras Nook
Nekolution
Nemesis 3D
Neogrid 3
Neverworld
New Genres Grid
New Life Italy
NewOffworld
Next Reality
Nordlicht Grid
Nova Space
Nymphgrid 2 Shopping
OB
Oczko
Offworld
offworld.hopto.org
Omnopolis
Open Mind Grid
Open Virtual Worlds
OpenManniLand
OpenSim Fest
OpenSimulator Community Conference
OSgrid
Otterland
Outworldz
Pangea Grid
Party Destination Grid
Perfect Life
Phaandoria Grid
Phantom Rose
Phillip’s Grid
Pineapple
Planet 3L
Planet Jikan
Pleasant Retreat
Port Anna
Power Angels
Pseudospace
Reserected Worlds
Resurgence
Rocket World
Royal Grid
Servex Grid
SFgrid
Sharing Is Caring Family
Shasiyadynasty
Sheikah
Shoalwater Bay
Six Sides
Solaria
Soul Grid
South Grid
Sovaria Estates
Sparta II
SpartaGrid
Speculoos
Spes
Starfleet
Stefanies World
SunEden Resort
SV3D
Swiss Grid
T-Grid
Tag Grid
Tanduria
TeCoLa
Tedesco Sim’s
Terra Nova
The City
The Devil’s Grid
The E Grid
The Haven Grid
The Public World
The Shirls Hypergrid
The Verse
Three Hills Grid
TinkerLand
Tlön
Tomi’s World
Trianon World
Trinity’s DreamGrid
Tropical Isle
Tropicana Grid
TUIS Open Grid
Twilight
Twiztid Timez Grid
UCI Mondego vLab
Unbetween
Utopia Skye
Uzuri Virtual
V.B. Creations
Vela Dreams
Vibel
Vida Dupla
Virlands
Virtual Business Grid
Virtual Grid
Virtual Harmony
Virtual Islands
Virtual Learning Village
Virtual Life Brasil
Virtual Marin
Virtual RBM
Virtual World Solutions
Virtual Worlds Grid
Virtual Worlds Zone
Virtualife
Vivec
Vivo Sim
VR Playground
VR-ESC
WaterSplash
WestWorld Grid
Whispering Willows
WKD Bucket Grid
WKDVR
Wolf Territories Grid
Wonder
Wyldwood Bayou
Xmir
XTalent
Yippee Ki-Ay Blues Grid
ZetaWorlds
Zirconia
Zone Nations