Two dozen WYSIWYG JS text editing thingers. Some are free, others you have to pay for and go up to $3000 for an integrated editing environement that also converts to PDF.
Ten web based file managers. Demos for KCfinder FileVista CKfinder Filerun
The demo requires a login and pass. Use demo and demo.
wopen - like fopen but includes www in filespace per alice!dmr's suggestion (pers comms ~1996)