I'm personally an enthusiast of legacy character encodings, so it makes sense for me to have a page like this.
If you want to see a collection of encodings I've thrown together, take a look at the options below and take your pick on what you want to explore.
If you see any characters highlighted like this, it's to denote characters that stand out from DOS codepages 437 and 850.
DOS Codepages
ISO Codepages
Windows Codepages
MacOS Codepages
EBCDIC Codepages
HP Codepages
Other Codepages
Currently a work in progress. Amount of codepages included is subject to change.
Data from Wikipedia and Wikibooks (data licensed under CC-BY-SA 4.0), as well as HP.