Leister - Sarnen
- Manufactures a range of laser based welding and soldering equipment. Includes overview, products and contact information.
- http://www.leister.com/

Swiss Federal Statistical Office: Obwalden (Upper Unterwalden)
- Key data on the canton: area, population, languages, educational attainment, employment, housing, mobility and political parties.
- http://www.bfs.admin.ch/bfs/portal/en/index/regionen/regionalportraets/obwalden/blank/kennzahlen.html