Well-done but Unfortunately Discontinued App Projects

Gifninja is an online service that allows you to create animated GIFs from multiple image files or from a video and split an animated GIF in separate images.

EncryShare offers AES-256 encrypted, one-click file uploads with no registration or ads. Features include unlimited speeds, quick downloading, and open-source review.

Opera Link™ is a free service that enables data sharing between all your computers and devices. It can synchronize your bookmarks, Speed Dial, notes and other useful browser information, so they are available to you wherever you go.

Opera Unite is an extensible framework that allows for several web services (referred to as "Applications") to be hosted from the user's computer, including a web server for hosting a site, file and photo sharing, a chat room, and streaming media.

ScribeFire is an extension for the Browser that integrates with your browser to let you easily post to your blog: you can drag and drop formatted text from pages you are browsing, take notes, and post to your blog. Available for Chrome, Opera, Safari, and Firefox.

Video Blocker allows you to hide videos from channels that you don't like. You can specify these channels by right-clicking on a link to a video on YouTube or by adding them manually via the options page.