123developers is an online resource for web developers .It has articles, code snippents, tutorials, help and examples about popular web develpment tools like PHP, ASP.NET, Javascript, AJAX, Regular Expressions etc.As far as Web development tools and platforms are concerned, there are many systems available to the public free of charge to aid in development. A popular example is the LAMP (Linux, Apache, MySQL, PHP), which is usually distributed free of charge.