WikiPBX is a PBX Web interface for FreeSWITCH. Multiple "accounts" are supported per server instance: each account is effectively a completely independent PBX. Configuration is layered so that XML files go on top of what is stored in the database. This allows you to use a database, but stays out of your way if you choose to use flat files. Extensions, SIP endpoints, and gateways can be configured via a Web interface. Live calls can be viewed, hanged up, and transferred. Call history (CDR records) can be viewed over the Web interface. There is a Web interface for managing IVRs. "Sound clips" can be easily recorded for use in dialplan or IVRs. Audio or text-to-speech can be injected into live calls.
PHP GUI API is a package that renders HTML pages composed programmatically. It is designed in a similar fashion to Java's GUI package, but it is for HTML components rather than desktop applications. It consists of a set of classes that wrap around several types of HTML page components and CSS elements that can be composed and configured programmatically to generate whole pages. The classes render the page by generating HTML for each element and the contained elements. It provides classes for wrapping paragraphs, divisions (div), input fields, forms, tables, images, links, etc.