SEO Profesional Toolbar offers many SEO-related tools in one place. It can display PageRank, S-Rank, and the number of backlinks for visited pages. It stores the history of ranks for selected sites. It can highlight words, links, view the number of words, and more. The history of ranks and back-links is stored in a database, therefore you may watch how your pages evolve in time. All are equipped with beautiful colorful charts. You can view observed domains in the sidebar and check their ranks without even visiting them. The extension also includes a customizable list of handy SEO-related links. All this is packed together with a search tool for enumerating and highlighting words and different types of links.
Cube Trains is a puzzle game where you build elevated railways in a city. It features 3D puzzles, unlimited undo/redo, and smart placement of pieces. The non-linear level graph means you don't have to beat a level before unlocking the next one. The game comes with a built-in level editor, so you can build and share your own corners of the city.