Here are some links to our helpful instructions ;-)

All viewers by or based on Linden Lab viewers, including on 1.x, 2.x and 3.x code, are technically compatible with grids based on the OpenSim server code. However, the basic viewers provided by Linden Lab have no features to connect easily to non-Linden grids.

We suggest that you use one of the third-party viewers instead, which have extra features to make life much easier. OpenSim also keep a list of compatible viewers. If you have used Second Life™, you may have heard of Firestorm, but Singularity and Kokua are very popular too.

As of 2 May 2020 it is possible and very much recommended to use the optional secure port 9002 instead of insecure 8002. However, owing to a viewer bug in some older viewers, the grid selector makes it impossible to select https:// prefixes. This means you can only use it if you know how to edit grids.user.xml or grids.xml depending on the viewer in question. The advice is to use a modern viewer that allows secure connections and the availability of the insecure port is now under review.