Tilde Friends is a platform for making, running, and sharing web applications.
<!-- When you visit Tilde Friends in a web browser, you are presented with a
terminal interface, typically with a big text output box covering most of the
page and an input box at the bottom, into which text or commands can be
entered. A script runs to produce text output and consume user input.
The script is a Tilde Friends application, and it runs on the server, which
means that unlike client-side JavaScript, it can have the ability to read and
write files on the server or create network connections to other machines.
Unlike node.js or other server-side runtime environments, applications are
limited for security reasons to not interfere with each other or bring the
entire server down.
Above the terminal, an "Edit" link brings a visitor to the source code for the
current Tilde Friends application, which they can then edit, save as their own,
and run. -->
## Architecture
Tilde Friends is a C++ application with a JavaScript runtime that provides restricted access to filesystem, network, and other system resources.
The core process runs a core set of scripts that implement a web server, typically starting a new process for each visitor's session which runs scripts for the active application and stopping it when the visitor leaves.
Only the core process has access to most system resources, but session processes can be given accesss through the core process.
Service processes are identical to session processes, but they are not tied to a user session.
