Services: ngrok / derefer script

services.mdwn

@@ -80,6 +80,7 @@ This is a FOSS listing for service hosting. Staying on this list doesn't mean th
   * Security and privacy:
     * Tor (relay, bridge e exit node).
     * VPN / túneis.
+    * [ngrok - secure introspectable tunnels to localhost](https://ngrok.com/) ([client](https://packages.debian.org/stable/ngrok-client) / [server](https://packages.debian.org/stable/ngrok-server)).
     * [Convergence Notary](https://github.com/moxie0/Convergence/wiki/Running-a-Notary).
     * Webproxy para navegação anônima como o [anon-proxy](http://packages.debian.org/stable/anon-proxy).
     * [I2P](http://www.i2p2.de/).
@@ -172,6 +173,7 @@ This is a FOSS listing for service hosting. Staying on this list doesn't mean th
     * [Zenphoto](http://www.zenphoto.org).
     * [Plogger](http://www.plogger.org).
   * Others:
+    * [Derefer Script PHP](http://www.naden.de/blog/derefer-script).
     * [idno/Known · GitHub](https://github.com/idno/Known).
     * [perma](https://github.com/harvard-lil/perma).
     * [Koken](http://koken.me).