Skip to main contentSkip to site search Wekan, formerly LibreBoard, is an open-source and collaborative Trello -like kanban board application. Free Code Camp's open source community help you build a job-worthy portfolio of real apps used by real people, while helping nonprofits. Qiqqa is a free research and reference manager. Search for, read and annotate your PDFs. Then review your work, write up and create bibliographies instantly. Quora.com is a question/answer service allowing users to pose questions that other users can answer, each question and answer can have comments, each users can write one... Pushbullet is the easiest and fastest way to send links, pictures, files, lists, notes, and more right into your phone's notification tray, to your computer, or to a friend... XMind, a full-featured mind mapping and brainstorming tool, designed to generate ideas, inspire creativity, brings efficiency both in work and life. Code collaboration version control. Offers hosted (freemium) for limited (5) users, and a commercial self-hosted for a subscription. Free licenses are available for qualified open source projects, nonprofits, and classrooms. Real-time updated, Peer-to-Peer sites using the BitTorrent network and soon the Distributed Hash Table. Medium is a new place on the Internet where people share ideas and stories that are longer than 140 characters and not just for friends. Stack Exchange is a fast-growing network of 84 [and counting] question and answer sites on diverse topics from software programming to cooking to photography and gaming. Create incredible photos anywhere with all-new Lightroom CC and 1 TB of cloud storage. Get powerful editing features on any device in a new, easy-to-use interface. The world's most private search engine. Wolfram Alpha is a "Computational Knowledge Engine" - different from a search engine, it answers factual queries directly by computing the answer from structured data... wallabag is an opensource self hostable application for saving web pages.## Comfortable reading PayPal is the faster, safer way to send money, make an online payment, receive money or set up a merchant account.