Windows US English keyboard layout for typing TURKISH characters using the ALT_GR (right ALT) key.
Direct download v0.1 here
This layout for users who are familiar with the US English Q keyboard layout. (Actual physical keyboard layout does not matter) You can use all English layout functionality without change only using the ALT_GR key when a Turkish-only character is needed. Since these keys do not exist in a regular English encoding, applications using it must support UTF-8.
Example: To type ı, hold down ALT_GR and input i. To type İ, hold down ALT_GR and SHIFT and input i.
You can download the install package from the Releases area or download the source file (US-AGRTR.klc) and compile your own package by loading the source file into Microsoft Keyboard Layout Creator (MSKLC) (https://www.microsoft.com/en-us/download/details.aspx?id=102134).
All plain US English keys are also overloaded such that when used in combination with ALT_GR they will input the same plain characters. This was addded because otherwise it acts like a Shift (ALT_GR is actually just CTRL+SHIFT) and causes accidentally capitalizing the plain letters when typing fast.