VitaShell is the most popular file manager for the PSVita that’s installed on almost all taiHEN/HENkaku-enabled PSVita/PSTV systems in one way or another. It was originally released for Rejuvinate back in 2015 when it won the Revitalize contest on Wololo.
VitaShell 1.77 Beta brings about the following:
Support for more archive types such as 7z, tar, tar.gz, tar.bz2 and much more.
Probably some bug fixes because every release has those! There’s no real change log except a Twitter post as of now.