Pics.io is described as 'cloud-based service that enables photographers to work with no syncing hassles and storage issues. It stores everything valuable (photos, metadata, catalog) securely on the web allowing to work from anywhere, using any device you have' and is an website in the Photos & Graphics category. There are more than 50 alternatives to Pics.io, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux, iPhone and Android. The best alternative is digiKam, which is both free and Open Source. Other great sites and apps similar to Pics.io are darktable (Free, Open Source), Adobe Lightroom (Paid), RawTherapee (Free, Open Source) and Photoscape (Freemium).
digiKam is an advanced digital photo management application which makes importing and organizing digital photos a "snap". The photos are organized in albums which can be sorted chronologically, by folder layout or by custom collections.
darktable is a virtual lighttable and darkroom for photographers: it manages your digital negatives in a database and lets you view them through a zoomable lighttable. it also enables you to develop raw images and enhance them.
From high-precision light and color tools, to advanced clarity and dehaze settings, to the ability to create and save your own filters. Polarr is the ideal photo editor for bloggers, students, and photo professionals alike.
ACDSee is a complex, multi-purpose application that serves for viewing, organizing and editing digital photos. Furthermore, images can be shared on social websites or your own space on the developer’s website.
Adobe Photoshop Elements combines power and simplicity so you can make ordinary photos extraordinary; tell engaging stories in beautiful, personalized creations for print and the web; and easily find and view all your photos.