offers downloadable PDF templates for the Boeing 737 MAX in various airline liveries [2]. Instructional Guides Scribd's Papercraft Guide

: Some developers offer "freemium" apps with limited free modules or trial versions.

Simulations of normal and non-normal procedures, cockpit flows, and checklist management.

The is a free, open-source aircraft addon for X-Plane. It includes a built-in "Tablet" (Avitab) that features interactive checklists, system diagrams, and failure simulations. While not a standalone CBT, many pilots argue it functions better than paid training tools. Pair it with the "FlightDeck 2 737" YouTube series for a complete free training solution.

Interactive lessons on the Flight Management Computer (FMC), Autoflight/Autothrottle systems, and Flight Director.