MDBG English to Chinese dictionary - English to Chinese dictionary with Mandarin pinyin - learn Chinese faster with MDBG!
Pleco - The #1 Chinese dictionary app for iOS and Android
wenlin - Wenlin Software for Learning Chinese
ChineseSkill - Chinese language has and does deserve its notoriety for heartbreaking difficulty.
Youdao Dictionary - Youdao is a search engine released by Chinese internet leviathan, NetEase in 2007.
Syng - Syng is a free, open source, cross platform, Chinese to English dictionary app and study toolset.