Here are some projects that I have made or think are interesting.
A small embedded web server for a thread / diskless systems. Web / REST service pages are served from the C/C++ code directly instead of having to access the disk.
Check out the Bitty HTTP web site.
This is an experimental program for allowing you to embed HTML directly into you C/C++ code. This is similar to the way PHP works.
You start in HTML mode and when the WebC compiler hits a <?wc it switches to C/C++ code. When you put a ?> it switches back to HTML code.
For example if you start with:
<!DOCTYPE html>
<html>
<head>
<title>WebC!</title>
</head>
<body>
<?wc
int r;
for(r=0;r<5;r++)
wcecho("Hello world!<br/?>");
?>
</body>
</html>
Check out the WebC web site.