Tuugo is a web directory of companies, products and services they supply and job opportunities they offer for more than 50 countries around the world (http://www.tuugo.com/ ).

The users of the resource have the opportunity to add their company profile (http://www.tuugo.us/AddYourBusiness ); proposals for work (http://www.tuugo.us/AddYourBudgetAds ); view added ones and leave comments on them (http://www.tuugo.com.mx/Companies/transportadora-oscar-gonzalez/0200003198502#comments), etc.

Users can browse the directory by the following criteria:
1) By keyword - http://www.tuugo.us/Products/Accommodation
2) By category - http://www.tuugo.us/categories/business-services:1
3) By location - http://www.tuugo.us/locations/Al

Also there is a view of companies on the world map (http://www.tuugo.com.mx/Map/Abogados). By following any page user can see a description of the company, its keywords, location on the map (with the possibility of mapping the route from the point entered by user to the company).

A system of widgets is represented on the site  - any user can copy JavaScript code provided by the directory and paste it into his website, after which an information block on a particular company appears, along with a list of recent companies added to Tuugo (http://www.tuugo.cl/Widgets).

There's also a mobile version of the website, that duplicates nearly all website's functionality (http://www.tuugo.cl/m)

There's a content translating system  that allows any user to participate in Tuugo translation into other languages. Admin verifies and confirms every new word or phrase that has been translated by user (http://www.tuugo.cl/becomeTranslator). User receives a bonus for each translation - one of his companies gets a premium status (and gets displayed first in catalogues and stands out from the rest). Premium status can also be bought using PayPal.

A function of easy design change for affiliates is integrated
(http://www.iboobi.com/es/, http://www.llombo.de/de /, http://negocios.projectmarket.net/es/, etc.).

The screenshots of all the sites are made regularly an posted on Tuugo!

Those were just the basic features but their list can go on and on!

Some techniques and figures:

MySQL  as a database (database capacity over 80GB);

noSQL DB Redis for cache storage;

PHP5 + Smarty as a programming language;

Over 30 million companies from over 50 countries in the database;

More than 300,000 unique users per day.