Mergely - Web Application to View and Merge Changes in Documents

Mergely is a web application to view and merge changes in documents. Mergely shows you changes to documents side-by-side so you can clearly see what changed from one version to the next. It can be used as a diff tool (read-only) or as both a diff and merge tool for plain text, CSS, HTML, XML, javascript, PHP, C, C++, etc.