Textastic is a fast and versatile text, code and markup editor supporting syntax highlighting of over 80 programming and markup languages. Connect to FTP, SFTP and WebDAV servers or to your Dropbox account. Use the built-in WebDAV server to easily transfer files from your Mac or PC over Wi-Fi.
It's the perfect app to view and edit your website and source code files at home, in the office or on the road.
FEATURES
• Syntax highlighting of more than 80 languages:
HTML, XML, Markdown, Objective-C, C++, PHP, Perl, Python, SQL, JavaScript, CSS, shell scripts and many more (full list available on the website)
• Compatible with TextMate syntax definitions and themes
• Code completion for HTML, CSS, JavaScript and PHP functions
• FTP, FTPS (FTP over SSL), SFTP (SSH connection), WebDAV and Dropbox clients
• iCloud
• WebDAV server
• Symbol list to quickly navigate in a file
• Full external keyboard support
• Displays additional keys over the virtual keyboard to make it easy to type characters often used for programming
• Easily move the cursor using swipe gestures
• Supports most encodings like UTF-8, ISO-8859-1, CP 1251 or MacRoman
• Supports different tab widths and soft tabs (spaces instead of tabs)
• Customizable font and font sizes
• Undo & Redo
• Find & Replace
• File information like character count and word count
• Send files by email
• Local and remote web preview for html and Markdown files
• Supports TextExpander touch snippet expansion
Textastic supports several ways to import your files:
• By using "Open In" in other apps
• Connect to (S)FTP and WebDAV servers, and Dropbox
• Over Wi-Fi with the built-in WebDAV server
Don't hesitate to tell me the features you want to see in the next version!
http://feedback.textasticapp.com/
http://twitter.com/Textastic
New:
• added Markdown color rules to all built-in themes
• added "Save in Working Copy" command for files that were opened using the "Edit in Textastic" command in Working Copy 2.1
• updated TextExpander SDK: now supports JavaScript snippets
Fixed:
• the editor can now paste URLs from the clipboard
• changed code completion sort order so that numbers are properly supported (for example "9" is listed before "10" now)
• fixed issues with dictation
• x-callback-url: "open", "append", and "replace" now call the URL supplied in the x-success parameter on success
• x-callback-url: "append" and "replace" now create new directories if the path you provided does not already exist
• improved external keyboard shortcut behavior
• other minor bug fixes
If you like Textastic, it would be amazing if you could leave a positive rating or review on the App Store!
Textastic Code Editor 
Textastic Code Editor for iPad 
Textastic 