Couchers.org - The new alternative to Couchsurfing. Non-profit. Community-focused. Well built.
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Trustroots - Travellers community for sharing, hosting and getting people together.
Rust - A safe, concurrent, practical language
Couchsurfing - CouchSurfing is your ticket to explore the world -- from the road or from your own home.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible