jacobandericxili-dictionary is simply one of the best and only plugin for managing your .mo and .po files.
Instead of busting your head manually editing your files with an editor or some sort, xili-dictionary gives you an easy to use panel where you can add, delete, and modify terms and their translations.
The beauty behind it is that when you're done, you just export your .mo and .po files as if you never used a plugin. You can literally install it on a WordPress, generate your translation files, and when you're done, uninstall it and your WordPress will still run perfectly. In other words, you don't have to rely on xili-dictionary for your translation files, you simply use xili-dictionary to ease the task of generating and managing them.
On top of that, xili-dictionary comes with really handy functionalities like automatically adding terms from categories and others. If you combine it with xili-language at http://wordpress.org/extend/plugins/xili-language/ you basically have everything you need to easily, without any hassle, build a custom multilingual WordPress from scratch.
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