Handbook of Socionics
It contains everything that is so necessary to know in this science.
All TIMs on one screen, with a description of each TIM and its relationship with others.

And also you will find:
- description of model A
- quadras and their brief description
- description of aspects for each function
- aspect dictionaries

TIM calculator by signs, which will help you in typing.

Developer website: gritzfar.de