Seattle, a city surrounded by water, mountains and evergreen forests, and contains many Software and IT companies.
Seattle is the Washington State’s largest city and it is home of large tech industry, with Microsoft and Amazon headquartered in its metropolitan area.
1. Suplari
: Suplari, 1525 4th Ave Suite 700, Seattle, WA 98101, United States
Website : http://suplari.com/about-us/
2. Appifox
Contact : +1 888-331-7521
3. Navigating Cancer
Address : Navigating Cancer, 1008 Western Ave #206, Seattle, WA 98104, United States
Website : http://www.navigatingcancer.com/
Contact : +1 800-925-4456
4. Globys Inc.
Address : Globys Inc., 705 5th Ave S #700, Seattle, WA 98104, United States
Website : http://globys.com/
Contact : +1 206-352-3055
5. Dogfish Software
Address : Dogfish Software, 216 1st Ave S #200, Seattle, WA 98104, United States
Website : http://www.dogfishsoftware.com/
Contact : +1 206-395-9050
6. Vectorform, Seattle
Address : Vectorform, Seattle, 2211 5th Ave Suite 201, Seattle, WA 98121, United States
Website : http://www.vectorform.com/
Contact : +1 248-777-7777
7. Socedo
Address : Socedo, 925 4th Ave suite 1100, Seattle, WA 98101, United States
Website : http://www.socedo.com/
Contact : +1 206-512-8067
8. EnergySavvy
Address : EnergySavvy, 1201 3rd Ave Suite 2200, Seattle, WA 98101, United States
Website : http://www.energysavvy.com/
Contact : +1 877-217-2685
9. Dropbox Seattle
Address : Dropbox Seattle, 701 5th Ave, Seattle, WA 98104, United States
Website : http://dropbox.com/jobs/seattle
10. Tableau: Millworks Building
Address : Tableau: Millworks Building, 1000 N Northlake Way, Seattle, WA 98103, United States
Website : http://www.tableau.com/
11. Leapfrog Technology, Inc.
Address : Leapfrog Technology, Inc., 1335 N Northlake Way Suite No. 202, Seattle, WA 98103, United States
Website : http://lftechnology.com/
Contact : +1 425-894-9610
12. Ratio
Contact : +1 206-281-8240
13. Elite Crest Technologies
Address : Elite Crest Technologies-Mobile App Makers in Seattle-iPhone, Android, IoT & AI Mobile Apps, Elite Crest Group, 4739 University Way #2026, Seattle, WA 98105, United States
Website : http://www.elitecrest.com/
Contact : +1 425-208-1541
14. Tableau
Address : Tableau, North 34th Street, Seattle, WA, 1621 N 34th St, Seattle, WA 98103, United States
Website : http://tableau.com/
Contact : +1 206-633-3400
15. Matillion
Address : Matillion, 1601 5th Ave, Seattle, WA 98101, United States
Website : http://www.matillion.com/
16. LabKey Software
Address : LabKey Software, 617 Eastlake Ave E #400, Seattle, WA 98109, United States
Website : https://labkey.com/company/contact-us
Contact : +1 206-701-9975
17. Trakstar
Address : Trakstar, 911 E Pike St Suite #333, Seattle, WA 98122, United States
Website : http://www.trakstar.com/
Contact : +1 877-489-5651
18. Snap!
Address : Snap!, 939 Westlake Ave N, Seattle, WA 98109, United States
Website : https://snap-raise.com/
Contact : +1 206-285-0906
19. Tatango
Address : Tatango, 2211 Elliott Ave #200, Seattle, WA 98121, United States
Website : http://www.tatango.com/
Contact : +1 206-274-6599
20. Actively Learn
Address : Actively Learn, Fourth floor, 220 2nd Ave S, Seattle, WA 98104, United States
Website : http://www.activelylearn.com/
Contact : +1 855-862-5505
21. Blink – UX Research & Design
Address : Blink – UX Research & Design, 1011 Western Ave suite 600, Seattle, WA 98104, United States
Website : https://blinkux.com/
Contact : +1 206-447-9551
22. Tableau
Address : Tableau, NorthEdge, 1621 N 34th St, Seattle, WA 98103, United States
Website : http://tableau.com/
Contact : +1 206-633-3400
23. ICEBRG
Address : ICEBRG, 619 Western Ave Suite 200, Seattle, WA 98104, United States
Website : https://www.icebrg.io/
Contact : +1 206-717-0651
24. Tahoma Technology
Address : Tahoma Technology, 2819 Elliott Ave # 203, Seattle, WA 98121, United States
Website : http://www.tahomatech.com/downloads/documentation/hardware_manuals/10117.htm
Contact : +1 206-728-6465
25. Friendly Earth International, Inc.
Address : Friendly Earth International, Inc., 1560 1st Ave S, Seattle, WA 98134, United States
Website : http://www.friendlyearth.org/
Contact : +1 206-367-4111
26. Jobscan
Address : Jobscan, 89 Yesler Way #203, Seattle, WA 98104, United States
Website : http://www.jobscan.co/
27. Copacino+Fujikado
Address : Copacino+Fujikado, 1425 4th Ave Suite 700, Seattle, WA 98101, United States
Website : http://www.copacino.com/
Contact : +1 206-467-6610
28. Russell Investments
Address : Russell Investments, 1301 2nd Ave, Seattle, WA 98101, United States
Website : https://russellinvestments.com/us/
Contact : +1 206-505-7877
29. OnePiece Work – Seattle
30. Skilljar
Address : Skilljar, 720 Olive Way #700, Seattle, WA 98101, United States
Website : https://www.skilljar.com
31. Usermind, Inc
Address : Usermind, Inc, 83 Columbia St #305, Seattle, WA 98104, United States
Website : http://usermind.com
Contact : +1 206-535-2867
32. Comcast Technology Solutions
Address : Comcast Technology Solutions, 1000 2nd Ave, Seattle, WA 98104, United States
Website : https://www.comcasttechnologysolutions.com
Contact : +1 800-824-1776
33. Outreach
Address : Outreach, 333 Elliott Ave W Suite 500, Seattle, WA 98119, United States
Website : https://www.outreach.io/
Contact : +1 888-938-7356
34. Bizible
Address : Bizible, 830 4th Ave S #400, Seattle, WA 98134, United States
Website : http://www.bizible.com
Contact : +1 800-913-2620
35. Apptentive
Address : Apptentive, 1932 1st Ave Suite 300, Seattle, WA 98101, United States
Website : http://www.apptentive.com
Contact : +1 774-277-8368
36. Igneous
Address : Igneous, 2401 4th Ave #200, Seattle, WA 98121, United States
Website : https://www.igneous.io
Contact : +1 844-446-3687
37. Textio
Address : Textio, 920 5th Ave Suite 2300, Seattle, WA 98104, United States
Website : https://textio.com
Contact : +1 800-898-1401
38. 47 Degrees
Address : 47 Degrees, 321 3rd Ave S Suite 205, Seattle, WA 98104, United States
Website : http://47deg.com
Contact : +1 206-701-6277
39. SkyKick
Address : SkyKick, 200 W Thomas St #400, Seattle, WA 98119, United States
Website : http://www.skykick.com
Contact : +1 888-503-3367
40. Amperity, Inc.
Address : Amperity, Inc., 701 5th Ave 26th Floor, Seattle, WA 98104, United States
Website : https://amperity.com
Contact : +1 206-432-8302
41. Subsplash
Address : Subsplash, 3257 16th Ave W #200, Seattle, WA 98119, United States
Website : http://www.subsplash.com
Contact : +1 206-965-8090
42. Double Down Interactive
Address : Double Down Interactive, 605 5th Ave S #300, Seattle, WA 98104, United States
Website : http://doubledowninteractive.com
43. FLEXE Inc.
Address : FLEXE Inc., 83 S King St, Seattle, WA 98104, United States
Website : https://www.flexe.com
Contact : +1 855-733-7788
44. Seattle Mobile App Development Company
Address : Seattle Mobile App Development Company, 1425 Broadway #22309, Seattle, WA 98122, United States
Website : https://anappdeveloper.com/seattle
Contact : +1 206-538-2577
45. Heptio
Address : Heptio, 901 5th Ave Suite 3310, Seattle, WA 98164, United States
Website : http://www.heptio.com
Contact : +1 206-788-8081
46. Xealth
Address : Xealth, 506 2nd Ave Suite 1900, Seattle, WA 98104, United States
Website : http://www.xealth.io
Contact : +1 206-866-9415
47. Amplero Inc.
Address : Amplero Inc., 1218 3rd Ave #900, Seattle, WA 98101, United States
Website : https://www.amplero.com
Contact : +1 206-816-3700
I have mentioned all the major software/IT development companies in the area of Seattle. If your company is not listed here, feel free to contact us.