If you cannot afford a LISREL license, the research community has developed powerful, that are now industry standards:

: Models can be defined via original matrix notation, user-friendly SIMPLIS syntax, or a graphical interface.

LISREL estimates the parameters using maximum likelihood or other methods.

Searching for "LISREL 8.8 full version free download" usually leads to third-party file-hosting sites. These downloads carry high risks:

: Capable of handling ordinal and censored variables using weighted least squares (WLS) and diagonally weighted least squares (DWLS) methods [2].