After Perl5, I'm mostly interested in:
- Assembly
- C
- Cobol
- C#
- C++
- D
- Dart
- Fortran
- Go
- Haskell
- Java
- JavaScript
- Kotlin
- Lisp
- Lua
- Matlab
- Nim
- Objective C
- Perl6
- PHP
- Python
- R
- Ruby
- Rust
- Scala
- Scheme
- Smalltalk
- Swift
- Unixish Shell Scripting languages
- Visual Basic
- Other (post in comments)
(To get the other side of What programming language do you hate the most?)