Haskell development environment for iOS

Raskell is a Haskell editor and interpeter for the iPad. Write your code in the syntax highlighting editor with it's Vi like keyboard bindings, then press to open the interpreter window, execute your script, and evaluate expressions in the REPL.

Lisping: Edit LISP by the parse tree on iOS

Lisping is an iOS Lisp editor which allows you to edit your source code via the parse tree, an approach well suited to the touchscreen.