Trackers are tools that assist the runner with checks completed/available, items acquired, and characters acquired among other information. Some trackers require manual interaction, some can automatically track based on the current state of the game.

List of Trackers:

EmoTracker - EmoTracker is a multi-game tracker platform for Windows. The Jets of Time EmoTracker pack supports items and character tracking as well as map/location tracking for multiple game modes. This pack supports autotracking.
The EmoTracker package manager contains many options for Jets of Time. There is also the Beta Tracker Pack which must be installed manually (instructions are on the linked page) but contains several new features.

Web Based Autotracker - Hosted on the ctjot.com domain, this tracker is based off of the EmoTracker Items Only variant. Autotracking is supported through QUsb2Snes.

Trackers for older versions of the randomizer:

Web Based tracker by Fleury14 - Web based tracker for the 2.x version of the randomizer. Features item, character, and location tracking by time period.

Web Based tracker by Tekenu - Web based tracker for the 2.x version of the randomizer. Features item, character, and time period tracking.