For really big files, I like glogg (https://glogg.bonnefon.org https://glogg.bonnefon.org). It's just a viewer not an editor but it handles files larger than th

For really big files, I like glogg (https://glogg.bonnefon.org https://glogg.bonnefon.org). It's just a viewer not an editor but it handles files larger than the available RAM with ease (multi-GB log files).