Before I had Instagram I used Lightbox religiously.. It has very similar photography filters you can select. You can access your photo-stream both on your phone app and through the web. It is good, just without the huge cult following that Instagram has. One thing it does that Instagram doesn’t is allows you to instantly cross-post. If I want to upload a photo and post it on my Twitter, Four-square, Facebook, Tumblr and more I can do this all with one click on Lightbox! Now that’s pretty clever!
If you are directly uploading photos to Twitter via the Twitter client (other application which might use “YFrog”) your photos get saved here: Twitpic. If you haven’t logged into that site directly you might want to. Not only if your looking to promote your photos but also to check out who can view or access your content. Either way it displays nicely and is just as easy to find your way around as Twitter.
Also there is Picasa Web Albums which is linked to your Google Account.. They seem to have made changes recently because mine is broken and I can’t screen shot it for you. I’ll update this post when I can!
Others I have that used and you might want to try out are these two. They have a smaller range of effects but still come out with cute shots.
Next Up- HDR photography app I think! ENJOY!