Meta Search - Search your Desktop, Google Drive, Dropbox, Gmail, Evernote.
Universal Book Reader - Just like its name, Universal Book Reader is really a universal book reading application allowing you to read the eBooks from the convenience of your smartphones.
Findo - Your smart search 🔍 assistant across personal cloud ☁️
Cool Reader - Fast and small cross-platform eBook reader for desktops and handheld devices
FYI - Find your documents, like magic 🔮
iReader - iReader is one of the most accomplished ways to read the books right from your smartphones.