ColouriseSG is described as 'provides an easy way to colorize old photos online. Specifically made for old Singaporean photos, the web based tool lets you upload an image and quickly get a colorized version' and is an website in the Photos & Graphics category. There are more than 10 alternatives to ColouriseSG, not only websites but also apps for a variety of platforms, including Windows, Mac, iPad, Self-Hosted solutions and Linux. The best alternative is DeOldify, which is both free and Open Source. Other great sites and apps similar to ColouriseSG are Picture Colorizer (Free), BlackMagic (Freemium), AKVIS Coloriage (Paid) and CODIJY Pro Photo Colorization (Paid).
AKVIS Coloriage manipulates colors of an image: from colorizing old black and white photos from your family archive to replacing colors in your color photos. AKVIS Coloriage is available in two versions – as an independent program (standalone) and as a plug-in to a photo editor.
Auto Colorize Pro is a revolutionary photo coloring application which lets you use new automatic colorization technique based on scribbles to change the color of any object on your photo. Just mark part of the image with any color and let the magic happen.
New Color - Recolor, edit and create the perfect photo content by using the groundbreaking photo retouching, recoloring and editing features of New Color. Give your photos the perfect color enhancement without struggling with needless complexity.