This site searches better than quran.com. It includes the Sahih International, Pickthall, Yusuf Ali, Shakir, and Dr. Ghali translations. It provides text with and without tashkil and lets you view a tafsir at the same time as the Quran
The Unviersity of Southern California, Center for Muslim-Jewish Engagement, Religious Texts version. Provides the Yusuf Ali, Pickthall and Shakir versions in translation, a transliteration of the Quran and an index.