11 Most Popular Open Source Softwares Of All Time

Firefox

Firefox 3.5 sets the pace with dozens of new features, including the smart location bar, one-click bookmarking and blindingly fast performance. Avoid online scams, unsafe transactions and forgeries with simple site identity. View Web pages faster, using less of your computer’s memory.
FileZilla

FileZilla is a cross-platform graphical FTP, FTPS and SFTP client a lot of features, [...]