一些适用于Web的IME

http://neilj.github.io/Squire/ - Squire

http://www.bootcss.com/p/bootstrap-wysiwyg/ - bootstrap-wysiwyg

http://ueditor.baidu.com/website/umeditor.html - UMeditor

http://www.wangeditor.com/ - wangEditor

http://simditor.tower.im/ - Simditor

http://imperavi.com/redactor/ - Redactor fantastic

https://simplemde.com/ - SimpleMDE Markdown Editor

http://substance.io/examples/ - Substance

https://github.com/michelf/php-markdown

https://github.com/SegmentFault/HyperDown