Facebook announced Monday that it will buy popular photo-sharing app Instagram for a cool $1 billion in cash and stock.

CEO of Facebook Mark Zuckerberg said the app will not be integrated with Facebook. Instagram users will be able to share their photos across all social networks. Zuckerberg said this is the first, and likely last, time Facebook will acquire a product.

Just 18 months old, Instagram has over 30 million users. Instagram for Android debuted last week, with 5 million downloads within the first six days.

Backlash against the Facebook - Instagram acquisition was swift. Users took to Twitter to voice their unhappiness with the deal.

Some mobile users who do not want to use the app now that Facebook, with all of its privacy issues, has acquired the app. For all you Facebook haters, we've found the 5 best alternatives to Instagram that will allow you to edit and share your photos while maintaining your privacy.

Hipstamatic

Hipstamatic allows you to change lenses, film, and flash settings with just a swipe of your finger! Users can instantly share their photos on Facebook, Twitter, Flickr, and Tumblr. Plus, Hipstamic offers an option to have you photos printed and delivered to you. It is $1.99 at the iTunes App store.

Photogene

Photogene is a photo-editing app that gives users a variety of options to fix their photos. It even allows you to add captions to your beloved pics. Users can export several photos at once to Flickr, Dropbox, Facebook, Twitter, Picasa, and email. Buy it at the iTunes App Store for $2.99.

Pixlr-o-matic

Pixlr-o-matic allows you to turn your photos into cool vintage images. With the darkroom app it's easy to add effect, overlay, and border to any image with just three easy steps. The app will edit photos that are already on your Apple device; no camera needed! You can download it for free.

Camera +

If you're looking to grow as a photographer, Camera + is the one app that will help you do that. It offers a ton of filters and editing tools for your photos. Users can import multiple photos from their library to the app. For $0.99, this app is a steal.

Camera Awesome

Perhaps one of the best free photo apps out there, Camera Awesome truly lives up to its name. Unlike Instagram, this photo-editing app allows you to apply more than one filter to your photo. If you're looking to save a buck, skip Camera + and buy this app instead for free.

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