I use GameCrew, that allows you to manage your companion apps for your favorite games. I use a profile to auto launch the following:
irFFB uses the 360 Hz telemetry data made available by iRacing to generate force feedback effects. The 360 Hz rate is superior to the normal 60 Hz FFB that iRacing outputs. It also includes options for "enhanced" effects such as "seat of the pants" that helps drivers feel when the car is losing rear traction.
Crew Chief uses data from the iRacing SDK to build up a picture of what's happening on track, and then informs the driver with audio messages. Crew Chief includes a 'spotter' to give messages when opponents are along side, as well as a ton of other race information. It also includes voice recognition so you can ask it various questions about what's going on in the race.
JRT is an extremely powerful app that reads in data from the iRacing SDK and can be used to display dashboards, timing lists, fuel information, track maps, and a whole lot more. I use it to display a custom dash and a timing screen on two old android phones.
SimHub is a program where you can add external hardware to your simulator. From dashboards to bass shakers, many possibilities are available and everything is modular. I use it to control my bass shakers, and to display a custom dash on yet another android phone.
iRacingConfig is a free iRacing desktop app that allows you to edit all iRacing INI files simultaneously using a simple interface to create a single profile that you can edit, copy and apply to iRacing at any time. iRacingConfig was created to make it easy to manage multiple config profiles that you may need for different purposes such as VR racing, video editing, test sessions, watching replays, frame rate testing etc. It allows you to create multiple profiles that you can apply to iRacing before its run to save you from having to startup iRacing, make changes, and then restart it for the changes to take effect.
By running the TelemetryLogger, all your driving data uploads seamlessly to the cloud and is available for analysis on your PC, laptop or tablet. The easy-to-use Driving Analyzer can help you identify where and why you are losing time. I spend a lot of time comparing my laps to my team mates.
I couldn't live without beeps telling me when to shift. You can find an updated vehicles.ini file, with all the new cars in it over here: https://github.com/samkatakouzinosracing/nspace.hu-soundshift
Trading Paints lets you see everyone's custom car liveries in iRacing.