OS X 的開源文本編輯器：CotEditor
CotEditor 是 OS X 下一款開源免費的文本編輯器。只適用于OS X，其外觀和行為與其它OS X應用一樣。啟動速度。
特性
語法高亮
支持40種主流的編程語言如：HTML, PHP, Python, Ruby 或 Markdown。你還可以創建自己的設置。
強大的查找和替換功能
超級強大的查找和替換功能使用OniGmo正規表達式引擎Setting via Click
There is no complex setting files require geek knowledge. You can access all your settings incl. syntax definitions and themes from a normal preferences window.
Outline Menu
Extract specified lines with the predefined syntax and you can jump to the corresponding line.
Split View
Split a window into multiple panes to see different parts of your document at the same time.
Character Inspector
Inspect unicode character data of each selected character in your document and display them in a popover.
Scriptable
Make your own macro in your favorite language, whether it is Python, Ruby, Perl, PHP, UNIX shell or AppleScript (and even JavaScript on Yosemite).
Incompatible Characters
Check and list-up the characters in your document that cannot be converted into the desired encoding.
CJK Language Friendly
Estimate various file encodings accurately, toggle to vertical text mode and keep its line height correctly.
