LocalFold is a modification of the RNAplfold local folding algorithm. It only considers base-pairs centered within a window such that $(i,j)$ are not located within the first and last positions of the windows.
Sita J. Lange, Daniel Maticzka, Mathias Möhl, Joshua N. Gagnon, Chris M. Brown, and Rolf Backofen Global or local? Predicting secondary structure and accessibility in mRNAs