What's the best photo sharing software for a group of 50-60 people?

I migrated all of my photos from Flickr to Google Photos when it relaunched and haven't had any regrets. I like that I can easily create shared albums and tag people in photos.

I love Google Photos Albums. It's perfect if you have everyone's email (or are in their G+ circle!). You can easily organize the albums and break it up by location or other categories. Plus you'll be able to use the powerful search features to find the right photo when you're done posting the hundreds you took on the trip.

Google Photos is the best option to sharing albums with others. 👌

I used this after a recent trip to Tahoe and it made it super easy for everyone to add photos and have access to pics other people took of them.

Use Blurr! It's made by a super talented team and the app is awesome for events and large groups of people.

I've been using Dropbox to share photos lately and it's been working out really well. What I like about it is that it's very straightforward. I save all my photos in Dropbox and can share them using one easy to share link as opposed to using a different service to share.

Super simple. Great approach to sharing photos and managing access.

File system. Easy to navigate. You could sync it to your desktop as well. Sharing is easier.

Upthere is the best way to store and share large amounts of high quality / HD content with private groups of people.

I worked on this product a few times ago, but still think that it's the best fit for your request :)

This an amazing app to share albums with friends