If you find a viewer which can connect to OpenSimulator then please add it to the bottom of the appropriate list.

Viewers with Grid Selector and Grid Manager

Below are viewers that have both a grid selector and a "Grid Manager". It enables you to select one of the many grids, including a grid or region on localhost (your own PC). There is also a UI interface to allow you to modify or add connection settings to these grids.

• Alchemy Viewer - v3 based TPV with full OpenSimulator support written from the ground up and geared towards hypergrid.
• Cool VL Viewer - the oldest of all actively maintained Third Party Viewers (former name: Cool SL Viewer).
• Hippo Viewer - a fork of version SL Viewer 1.23 with OpenSimulator specific enhancements.
• Firestorm viewer - v3 based TPV, the successor to Phoenix. The most widely used viewer on Second Life. OpenSimulator is fully supported with its own version.
• Kokua - v3 based successor of Imprudence.
• Radegast Metaverse Client - Light-client based on the libopenmetaverae project. Opensimulator is fully supported.
• Singularity - A Snowglobe-based viewer with many current features backported.
• Dayturn-windows - A OpenSim compatible viewer.
• Scenegate - Alchemy Viewer fork with a focus on accessibility, onboarding, and interoperability with Open Simulator

Bento Viewers

Singularity Alpha http://alpha.singularityviewer.org/alpha/

Singularity Nightly Builds https://virtual-nexus.xyz/down/

Alchemy Viewer 5 Beta https://alchemyviewer.org/pages/downloads.html

Firestorm Viewer 6 http://www.firestormviewer.org/downloads/

Dayturn-windows https://bitbucket.org/dayturn/dayturn-windows/downloads/

Text-only Viewers

These are lightweight viewers, which either do not offer a graphical component or where the graphical component is not used by deault. The function of these viewers however is to connect to a grid, chat, manage inventory, etc. Useful on systems with low specifications or for bringing an alt online without having your main avatar log out, or to quickly take care of messages, inventory, etc.

• JOpenMetaverse Purely Java based OpenSim client core library. Windows, MacOS,, Linux and Android Compatible. Please see jopenmetaverse introduction
• METAbolt - METAbolt is a non-graphical (text based) viewer. It's light weight and cross grid, which means it will work in Second Life™ as well as other grids that are based on OpenSIM. The viewer is Open Source so it's free. Currently METAbolt is only available for Windows platforms.
• Mobile Grid Client - A Second Life and OpenSim (Open Simulator) messaging client for your Android powered device (mobile phone, cell phone, tablet...).

Inactive Viewers

• RealXtend - a fork of the 1.23 Linden Client that has specialized features (not fully supported.)
• Idealist viewer
• 3Di viewer
• Xenki, an XBAP 3D application intended to be a browser add-on for OpenSimulator.
• Looking Glass viewer, Discontinued. Only OSGrid, ScienceSim and localhost are available from the list.
• Imprudence Innovative viewer with a high focus on OpenSimulator.
• Phoenix Viewer Based on the now discontinued Emerald Viewer. Combines many improvements and features from different viewers.