Huida is a lightweight Web-based help desk system for cases where there might be only a single responder. It could also be used for consulting, social services, or similar. It supports PayPal as a means for purchasing access to the system, has threaded queries and responses, and generates static pages of user-published content.
gscan2pdf is a GUI to ease the process of producing PDFs from scanned documents. You scan in one or several pages and create a PDF of selected pages. Scanning is handled with SANE via scanimage. PDF conversion is done by PDF::API2. Perl is used for portability and ease of programming, with gtk2-perl for the GUI.
GroupOffice is a groupware suite that takes your office online, implementing online collaboration and CRM. It allows you to share projects, calendars, files and email online with co-workers and clients. It is easy to use and fully customizable. It also features synchronization with PDAs and Outlook.
PHP Backup Maker (PDM) is a smart PHP backup solution. The script reads a given source directory (with its subdirectories) and then creates a set of directories filled with the content of the source directory, arranged in groups to fit a given capacity. It can be used to create CD sets for backups. It also supports ISO image creation, direct CD and DVD burning via cdrecord/growisofs, backup of files bigger than media capacity (splitting), automatic file index creation, and more.