It can do a quick peek into any number of packed exes and debs and lot more. Its small, efficient, contains no adware and no ads!7-zip. Mostly because the creator of this app is also the creator of LZMA2 compression algorithm which is petty much superior to everything else in speed and compression ratio. Meaning if he updates it, the first to get the new tech is 7-zip. Otherwise I also like PeaZip, coz it's cute looking, supports tons of formats and also supports ZPAQ (as well as 7z in both ways). While ZPAQ is incredibly slow, it also compresses stuff beyond what anything else can. For times when you need insane compression at any cost (which is time and machine you need to use it in this case). Too bad its adoption is basically non existent among general public.
WinRAR used to have best compression before LZMA appeared, so I did use it back in the day. But not anymore. Plus, 7-zip's 7z archives are much widely supported since all apps can unpack it. RAR, also, but not as much. ZIP is still the most used, but I think 7z is close second. I wish Microsoft would strike a deal with Igor Pavlov who made 7z/LZMA2 and impliment a full support for it into Windows (for both compression and decompression, replacing old and a bit dated ZIP. LZMA2 is faster and has better compression.
I agree with you about PowerArchiver @Sunshine-boy ! Good software. I'll always be a 7Zip user for free though. Works well!