Activity Manager is a project management tool that is simple to use, lightweight, and very efficient and customizable. It features collaborators repository administration, tasks repository administration, contributions management (activity management), and an extensible report facility (with built in templates). It allows you to build and maintain a hierarchical task tree. It is based on a database with a very simple model that allows quickly building custom reports through the report facility or through simple SQL requests.
JSqsh is a Java reimplementation of a console based (i.e. non-graphical) database query tool called sqsh. Jsqsh combines the ability to run SQL queries against any database with a JDBC driver along with much of the functionality of a Unix shell, such as piping the results of queries out to external programs (grep, more, etc.), expanding variables, redirecting output to files, command line editing, tab-completion of object names, and more.
muCommander is a cross-platform file manager with a dual-pane interface that features support for FTP, SFTP, SMB, NFS, HTTP, Amazon S3, Hadoop HDFS, Bonjour/Zeroconf, email attachments, archives in many formats (including Zip, RAR, 7z, GZip, Tar, Bzip2, ISO, NRG, AR, Deb, and LST), bookmarks, credential management, themes, multiple windows, full keyboard control, and many configuration options. It is available in 23 languages.
Duplicate Files Searcher is an application for finding and deleting duplicate files on your computer. It can also be used to calculate MD5 and SHA hashes. It has features such as manual files selection (giving the user full control over files to be deleted), byte for byte file comparison, file preview, several file comparison methods, and more.