In 1969, he co-founded with his wife Laura the Environmental Systems Research Institute (Esri), a privately held Geographic Information Systems (GIS) software company.
•
Today Esri is the largest GIS software developer in the world and its flagship product, ArcGIS, traces its heritage to Dangermond's initial efforts in developing ARC/INFO.
In 2010 Tomlinson received the Alexander Graham Bell Medal of the National Geographic Society (together with Jack Dangermond).
Jack Kerouac | Jack Nicholson | Jack Nicklaus | Jack the Ripper | Jack London | Jack Kemp | Jack Kirby | Jack Lemmon | Jack Black | Jack Abramoff | Jack Dempsey | Jack Benny | Jack White | Wolfman Jack | Union Jack | Jack White (musician) | Jack and the Beanstalk | Jack Johnson | Jack Charlton | Jack Palance | Jack Daniel's | Jack | Jack Paar | Jack Layton | Jack Straw | Jack Vance | Jack Bruce | Jack Warden | Jack's Mannequin | Jack in the Box |