New Google Photos - Shared suggestions, libraries and photo books
Ceremony - Ceremony is the fastest-growing wedding photo collecting application that allows you to easily collect all your wedding pics from guests.
Viso - Beautiful minimal image viewer for MacOS
Wedbox - Wedbox is known as one of the best wedding photo app that lets you easily collect all your wedding photos and videos from guests.
Google Photos - All your photos are backed up safely, organized and labeled automatically, so you can find them fast, and share them how you like.
RegexOne - RegexOne offers learning regular expressions with simple, interactive examples.