ff3sudoku is an add-on that features an engine for playing Sudoku puzzles. It can generate random puzzles, but it also detects and imports Sudokus from several Web sites, including websudoku.com, sudokupuzz.com, sudoku.com.au, and others. There is also a stand-alone version working in Firefox 3+ and GoogleChrome.
Gnome Honbun is a puzzle game for GNOME 2. It is played on a field size of which is 8x8 tiles. Whenever there are 3 or more tiles of the same color in a row or in a column, they will disappear. New tiles will fall from the top. You can swap two adjacent tiles but only in the case this operation would produce a "row" or "column" of tiles of same color.
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.
More binary packages Now rpms for SuSE and RedHat are available. There is also plain binary package with installator.