I remember there was a TUI app that could handle CSV, HDF, etc. I can't find if for the life of me though. I remember the author even made their own TUI library

I remember there was a TUI app that could handle CSV, HDF, etc. I can't find if for the life of me though. I remember the author even made their own TUI library for it. I've been looking for it for a while now, if anyone knows please let me know.