A server platform that lets you self-host multiple applications, intended to maximize freedom and privacy. Based mostly around Nextcloud, but the mobile app seems to do more, like Ethercalc.
Open source partition encryption solution, works with Windows (but not Linux) and replaces TrueCrypt or Bitlocker
Linux-based surveillance NVR
Meant for watching media on a PS3, but it's just a DLNA server with built-in transcoding.
works with EtherCalc in a sandbox with authentication
cross-platform, browser plugin available
Another alternative to DD-WRT, for some devices
It describes using IIS as the proxy, in addition to Nginx and others.
seems like these require a writeable NFC tag
It's a full OS, so you'd have to figure out how to get it installed on a VM through a hosting provider, or run it at home/work. Unless maybe it can be installed on top of plain Debian?