Jaro Mail is an integrated suite of interoperable tools for GNU/Linux and Apple/OS X to manage email communication in a private way, without relying on online services (in fact, encouraging users to store email locally). It mainly features a system for mailinglist filtering, address-book integrated whitelisting, and long-term email storage and archiving with functions for fast search and usage statistics. It makes internal use of customized versions of popular Unix tools like Mutt, Fetchmail, Procmail, Mairix, and Msmtp.
Aspose.Pdf is a .NET PDF component to write PDF documents without using Adobe Acrobat. It supports form field creation, document, text and page properties, color space, text, heading, and attachment settings. It lets you create PDF documents by using its API with XML templates and XSL-FO files. It also converts HTML, XSL-FO, and MS Word to PDF. Other features include image formats and security features, hyperlinks, the ability to add footnotes, automatic fitting to content in a table, decimal Tab stops, HTML tags, and keeping paragraphs together when breaking pages.
FF Multi Converter is a simple graphical application that converts audio, video, image, and document files between all popular formats, using and combining other programs. It uses ffmpeg for audio/video files, unoconv for document files, and the ImageMagick library for image file conversions.
STXXL is an implementation of the C++ standard template library STL for external memory (out-of-core) computations. STXXL implements containers and algorithms that can process huge volumes of data that only fit on disks. While compatibility with the STL supports ease of use and compatibility with existing applications, another design priority is high performance.
4Pane is a four pane detailed-list file manager for Linux. It is designed to be fully-featured without bloat, and aims for speed rather than visual effects. In addition to standard file manager things, it offers multiple undo and redo of most operations (including deletions), archive management including 'virtual browsing' inside archives, multiple renaming/duplication of files, a terminal emulator, and user-defined tools.