Erkul.games is a star citizen loadout tool. You can use this tool to outfit your ships in a web browser to see how it impacts their stats. You can also determine the cost of aftermarket parts as well as where they can be purchased.
SC Ships Performance Viewer
This is a tool similar to Erkul where you can build out your ship. It uses information from the new MFD rework and can provide a bit more in-depth information.
DOLUS SNARERPLAN
Snare Plan is a tool for those who like to prey on the others currently out engaging in trade, mining, or other activities. This tool will allow you to determine the best spot to set up a snare.
SC Trade Tools
SC Trade Tools contains information on trade routes to help you plan the most profitable trades. The site also contains mining and salvage information. Much of the information is kept up to date by users.
Cornerstone Universal Item Finder
Cornerstone is a site that provides tons of information on items in the game. Some of the most helpful information is where to purchase certain items/ships and how much they'll cost.
Reshade Guide by Karolinger
Reshade is a tool that provides a sort of filter/overlay to your game to allow you to adjust colors, brightness, etc. This is a great video guide on how to get that setup and running.
SC Wiki
Star Citizen Wiki provides tons of information on ships, characters, lore, equipment, componnents, and so much more.
Star Jump Fleet Viewer
The Star Jump Fleet Viewer is a 2d fleet rendering system. You can either manually add ships or upload a JSON file to get your fleet into a picture. For a json file I recommend the extension Hangar Xplor.
StarShip 42
StarsShip 42 is a fleet modeler similar to Star Jump's Fleet Viewer. The big difference here is that this one is more of a 3d modeling system.
Star Citizen Characters
This is a place for people to share their custom characters that they've made in the character customizer.
UEX Corp
UEX Corps site is heavily focused on providing information for traders. Here you will find lots of great information relating to commodities.
CCU Game App
CCU Game is a great app to use when you're looking to spend new money and want to maximizes savings on a ship by chaining warbonds. See my video on CCU chaining here
Subliminal's VKB Keybinds
Every patch lately seems to require new keybinds. Subliminal constantly puts out updated recommended VKB binds with charts for ease of use. These are best used with Joystick Gremlin and Subliminal has videos on how to set this up.
VERSE GUIDE
Verse Guide is a great tool to open up each planet and see information about it. This tool lists information about each outpost, length of days, temperature, and so much more.