BookStack, DokuWiki, TiddlyWiki, Nuclino, MediaWiki, Wiki.js, Trilium Notes, WackoWiki, Walling, Wiki on a Stick, Wikiful, wikidPad, Tomboy, VoodooPad, Scribbleton, TiddlyDesktop, YesWiki, Woas, MPTW, Wikipack, Book on a Stick, Malkovich are some alternatives to ATWiki.