These are my links for 30 Dic 2015 through 17 Feb 2016:

• Robtex – We aim to make the fastest and most comprehensive free DNS lookup tool on the Internet
• OS.js – JavaScript Cloud/Web Desktop Platform – OS.js is a JavaScript web desktop implementation for your browser with a fully-fledged window manager, Application APIs, GUI toolkits and filesystem abstraction.
• Try Perl: learn the basics of the Perl language in your browser – Welcome to Try Perl ! The window on your right is an interactive Perl interpreter. You can type Perl statements and watch it run. [ via MD http://braindead.tumblr.com/post/136604576916 ]
• Syncthing – Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized. Your data is your data alone and you deserve to choose where it is stored, if it is shared with some third party and how it's transmitted over the Internet.
• AlessandroZ/LaZagne · GitHub – The LaZagne project is an open source application used to retrieve lots of passwords stored on a local computer. Each software stores its passwords using different techniques (plaintext, APIs, custom algorithms, databases, etc.). This tool has been developed for the purpose of finding these passwords for the most commonly-used software. At this moment, it supports 22 Programs on Microsoft Windows and 12 on a Linux/Unix-Like OS.