Infoatlas
Estonian business directory. Also available in local language.
http://www.infoatlas.ee/eng/

Tallinn Hotels and Travel
Tallinn lodging guide from cheap to luxury, online reservation, photos, descriptions and city map.
http://www.tallinntravel.com/

Oikos Enviromental Consulting Services
Oikos provides a broad range of environmental consulting & testing services developed specifically to support business and industry. Consisting of an environmental consultancy, laboratory, training facility and environmental resource center, the firm offers synergistic client benefits.
http://oikos.ee/

City24.ee
Estonian real estate database. Lists properties for sale.
http://www.city24.ee/