Inspired by HQ9+: 4-Behavior Polyglot
Ruby, &gt;&lt;&gt;, HQ9+, Befunge-93, 62 characters
#9&amp;1+.@.10[0[fr'
puts&quot;\u0048ello World!&quot;#.1*57;!?lo r]r}:*3da'

&quot;Hello World!&quot; (Ruby)
Relevant part of code:
puts&quot;\u0048ello World!&quot;
quine (&gt;&lt;&gt;)
After colliding with the # mirror, both lines are read as string literals and printed with a newline between.
99 bottles of beer on the wall (HQ9+)
Code contains no H or Q, and exactly one 9, so the lyrics of the song are printed once.
+1 program (Befunge-93)
After jumping over 9 due to the # trampoline, a simple +1 program is run &amp;1+.@