Koder Code Editor - Koder Code comes with Syntax highlighting for PHP, HTML, CSS, JavaScript, SQL, JavaScript, Delphi, Visual Basic, Diff, Erlang, Groovy, Powershell, Latex, Scala etc.
Tynker - Game Worlds for Kids to Learn Programming
Juno - Cloud computing IDE for iPad
CodeCombat - Learn programming with a multiplayer live coding strategy game.
Juno Connect - Connect to Jupyter servers and cloud-computing services from your iPad or iPhone
StackHive - Design, develop or publish websites right from your browser