JsHttpRequest is a library for AJAX-based script creation. It features cross-browser compatibility (IE 5.0+ including disabled ActiveX, Mozilla 1.7+, FireFox 1.0+, Opera 7.3+, and Safari); file uploads from user browser to the server; full support of PHP debug features (including fatal error handling); multi-dimensional data structures exchange (JSON analog); PHP session support; and optimal data loading method choosing (XMLHttpRequest, Microsoft.XMLHTTP, etc.) depending on the current browser. The interface is compatible with XMLHttpRequest.
DbSimple is a database abstraction library which provides an extremely laconic and handy interface for practical usage in PHP 4/5 scripts. Its usage is much easier than most of other popular abstraction libraries (like ADODB, PEAR DB, and PDO). "Query execution" and "result fetching" operations are joined thogether and complemented by powerful placeholder support (including list-based placeholders) and various fetching modes. The library supports a unique and very convenient method to build dynamic SQL queries (conditional macro-blocks).
Sshbak is very simple but powerful and secure remote backup utility. It performs a fast and comprehensible daily (usually) backup of multiple machines via remote SSH connections. The result is a simple set of tar+gzip files. It supports the backup of piped program output (allowing remote backup of mysqldump or pg_dumpall results), parallel backup of different machines, and more.
The dkLab Apache is a patched Apache distribution for those who plan to use the Apache Web server to serve multiple separate sites working under different, fully separated, and independent Unix users. It does not require you to install any OS kernel modules or disable setuid, and works correctly and intelligently with KeepAlive turned on and MaxRequestsPerChild greater than 1.