Google has created Snapseed, a professional and complete photo editor.
• 29 Tools and filters, including Healing, Brush, Structure HDR, Perspective (see the list below).
• Opens RAW and JPG files
• Save your personal photos and use them later for new photos
• Selective filter brush
• All styles can easily be modified with precise, fine control
• Details - Magically brings out surface structures in images
• Crop - crop to standard size or freely
• Rotate - rotate 90deg or straighten a skewed horizontal
• Perspective - Fix skewed lines, and improve the geometry of horizons and buildings
• White Balance - Adjust the colors to make the image look more natural
• Brush - Retouch exposure, saturation or brightness selectively
• Selective - The renown "Control Point” technology: Position up 8 points on the image, and assign enhancements. The algorithm does the rest magically
• Healing - Remove the uninvited neighbor in a group picture
• Vignette – add soft darkness