Question: My boss asked me to setup a secured area online, which will contain all the FTP, MySQL etc details related to our web products. This online area must be secured and will only be accessible by the user we define.

It should be easy to understand and should have functionality to download details in PDF or in word format etc.

And should be able to handle following type of scenario:
A client has 10 websites so we'll need to store FTP, MYSQL etc details related to 10 websites, so CMS should be able to accept and present the data in easy way.

Do anyone has any suggestions for me to handle such kind scenario.

Please help. Thanks!

Answer: 
You can use all three tools without penalty or issue. There's absolutely no reason for a search engine to levy a penalty on a website that uses tools that has no direct effect on the website itself (i.e. these tools aren't altering your code or using "techniques" to manipulate the search results). These tools are just informative. Nothing nefarious about them.
[I asked](https://webmasters.stackexchange.com/questions/5268/multiple-webmaster-tools-accounts-on-website) a while ago if it was ok to have multiple accounts of the same "brand" of webmasters tools (i.e. 2 google accounts on one website - one for me one for an SEO company brought in) and it was ok.

I personally only use google - which generates 80% of our traffic. But I can't imagine a situation where using yahoo/bing/google on the same website will cause any problems.