PHP Chat Application with API: Exchange user messages on a page or using an API. It provides an application to let users send messages that can be viewed by other users who can also reply.

Uploady is a file uploader script with multi file upload support. It comes with more than 20 features and you can set up it in less than 5 minutes. And it is free and open source.

Want to create an API with PHP? Use this API Framework.