RRDutil is a a tool to collect statistics (typically every 5 minutes) from multiple servers, store the values in RRD databases (using RRDtool), and plot out pretty graphs to a Web server on demand. The graph types shown include CPU, memory, disk (space and I/O), Apache, MySQL queries and query types, email, Web hits, and more.
Caudex is a distributed document/reference management system. Its features include support for BibTeX reference types, reference organization in hierarchical categories, BibTeX export, multiple attachments (eg PDF files) for each reference and a servlet-based Web interface with full-text search on the PDF attachments. It is optimized for offline work, and local reference collections can be synced with servers at any time. Multiple local storages are supported and can optionally be synced against different servers.