Roundcube is a free and open source browser based webmail solution written in PHP with a desktop-like user interface, which is easy to install/configure. It runs on a standard LAMP server. The skins use the latest web standards such as XHTML and CSS 2. Roundcube includes other open-source libraries such as PEAR and the IMAP wrapper from IlohaMail.org.

Features of Roundcube are -

• Multilingual capabilities
• Full support for HTML messages
• Multiple sender identities
• Find-as-you-type address book
• Searching messages and contacts
• IMAP folder management
• Extensible using the Plug-in API

Requirements: PHP 5.2.1 or greater, IMAP Server
License: GNU GPL

mtop and mkill are two terminal based mysql monitoring tools.

mtop (MySQL top) monitors a MySQL server and displays the queries which are taking the most amount of time to complete. mtop’s features include ‘zooming’ in on a process to show the complete query, ‘explaining’ the query optimizer information for a query and ‘killing’ queries. In addition, server performance statistics, configuration information, and tuning tips are provided.

mkill (MySQL kill) monitors a MySQL server for long running queries and kills them after a specified time interval. Queries can be selected based on regexes on the user, host, command, database, state and query.

These tools can be downloaded from here.

Kohana is an open-source web application framework for PHP 5. It uses the Model View Controller design pattern and aims to be secure, lightweight, and easy to use. It uses strict PHP 5 OOP and originally based on CodeIgniter.

Kohana framework features are fast, flexible, incredible well documented and lightweight and extensible.

Kohana2 is the current stable release of the framework, which is suited for a production environment and you can download it here.