A file viewer like in Total Commander / Krusader I use DoubleCommander, which is a decent 2-panel file manager.
What I am missing is a viewer for the use case of peeking at a text file, especially logs:


quick to load
handles large text files (GBs)
handles page up/down
allows find / next / previous / highlight


remembers the searched strings

zoom, ideally with Control + mouse wheel
capable of closing with "esc"
capable of reloading the file on demand (F5)


remembers the position over reloads

ideally, configurable key shortcuts
etc.


In short, something to quickly open the file, find a string, have it open, reload when necessary at roughly the same place. Developers will find this very familiar.

Is there such app? Sublime it aint, File Viewer neither, jEdit neither, TextEdit neither... I've tried quite a lot of them but there's always some blocker.

Both Krusader and Total Commander have great viewers, so I believe Mac community produced one, too. (Not counting running Total Commander in Wine :)
I found that the closest match is DoubleCommander. With some Mac quirks, as Mac lacks keys like Insert, PgUp/PgDn so it's impossible to map the actions to shortcuts I am used to. But still, it's a decent (cross-platform) two-panel manager.