Get a viewer
One program, and you are inside.
A viewer is the program that draws this world on your screen. It is free, it takes about ten minutes, and there is exactly one place where people get it wrong. That part is near the top of this page rather than buried at the bottom.
The window, not the world
The world itself lives on our servers. What you install is the window you look through: it draws the terrain, streams in the things other people built, and carries your voice and your typing. Nothing of the world sits on your machine beyond what it needs for the next few seconds.
Because the window is separate from the world, you get to choose it. Several are free, they all reach this grid, and none of them is ours · we do not build a viewer and we do not want you locked into one. Pick the one you get on with.
Firestorm ships twice, and only one of the two can reach us
Take the build that says with OpenSim support.
Firestorm is built twice from the same source. One build talks only to Second Life; the other also speaks to independent grids like this one. Once installed the two look identical, so there is no way to tell from the program itself. The other viewers below ship a single build that reaches both · this is a Firestorm-only trap, and Firestorm is what most people install.
If you took the wrong one, skimi3d will simply never appear in the login list and nothing you type will change that. Uninstall it and fetch the other build; the two do not sit well side by side.
This one thing accounts for most people who give up before they ever arrive. It is not your fault and it is not a hard problem, it is a badly labelled download button.
Three that work here
All free, all made by other people, all able to reach this grid. If you have no opinion yet, take the first one · it is what most of the grid uses, so it is what any answer you find will assume.
Firestorm
start hereWhat most of this grid uses, and the one every answer on the internet assumes. More settings than you will ever open, which is the point once you know what you want.
Alchemy
Lighter and tidier, and it treats grids like this one as a first-class platform rather than an afterthought. Fewer panels shouting at you on the first day.
Singularity
Older in style and lighter for it. A long-running favourite on independent grids, and it asks the least of an ageing machine.
On a machine that cannot manage 3D at all, there are text-only clients that let you chat, teleport and handle your inventory without drawing anything. They are a genuine way in, not a consolation prize.