Searching for a quotation manager I’m looking for a way to manage the text of the quotations  that most certainly I will use (i.e. quote) in the future. I’m a philosopher, so this is specially handy —and even required— for the classical texts.

I'm currently using Mendeley to manage my references, which is fine for citations on daily working, but does not allow to add quotations to the library items.

I have checked Wikindx (a PHP-based manager which allow this), but it doesn't seem very consolidated… Currently, I keep my quotations in a mediawiki installation, but it is complicated and unoptimized (but at least gives me readability and long term security of accesibility).

Does anyone of you have the same trouble? Which manager can you recommend? Anyone knows if Mendeley has plans to add something like it?
TextCite: Publication Quotation Manager looks like a thing you are looking for (haven't tried, only googled it):


  TextCite is a program for organizing and commenting textual citations from texts (books, articles, or other published works) for use in producing scientific or academic publications. You can organize by publication, author, category, or outline. It works with bibliographic management programs like Citation, EndNote, RefWorks, and BibTeX, providing important text/citation management capabilities that these programs lack, while still allowing for rapid footnote and bibliography generation by means of your favorite bibliography manager. It also exports to PDF and Word (RTF).