I was looking for a BSON to JSON converter. In the process I came across a very large collection of online string-manipulation tools.
Online string tools is a collection of useful string manipulation utilities. All string tools are simple, free and easy to use. There are no ads, popups or other garbage. Just string utilities that work right in your browser. And all utilities work exactly the same way — load a string, get the result.
Interestingly, there's a dropdown on the top right that gives access to a long list of other tool collections. There are IMAGE tools, TSV tools, XML tools and many more. They're working on a BSON to JSON converter but it's not finished yet.