Papaly is described as 'simple social bookmarking tool to manage all your links. Create custom boards and categories. Share and follow topics of interest to discover new content' and is a well-known app in the Office & Productivity category. There are more than 100 alternatives to Papaly for a variety of platforms, including Online / Web-based, Google Chrome, Windows, Mac and Android. The best alternative is Raindrop.io, which is both free and Open Source. Other great apps like Papaly are Diigo (Freemium), Memex (Freemium, Open Source), start.me (Freemium) and Tagpacker (Free).
Pinboard is a bookmarking website intended for people who want to reliably keep track of large numbers of links. Its goals are to be useful, fight bloat, keep things fast, and stay small. Social bookmarking for introverts. m.pinboard.in
NewsBlur is a personal news reader that brings people together to talk about the world. It shows you the original site and allows you to read stories directly off the site while keeping track of what you read. It also filters and highlights stories you like and dislike.
Netvibes is a multi-lingual Ajax-based personalized start page or personal web portal much like Pageflakes, My Yahoo!, iGoogle, and Microsoft Live. It is organized into tabs, with each tab containing user-defined modules.
Collect any article you want to read later, image that inspired you or video you want to watch later. Save anything, never lose it and view it without ever leaving GGather. Organize your bookmarks with tags and notes. And GGather tags are special.