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LeadWave
Updated October 2026

151 SaaS Companies in Seattle (2026)

LeadWave's database lists 151 SaaS companies headquartered in Seattle, Washington. Software Engineering is the most common category among them. Below are the largest, with their headcount, funding, LinkedIn and CEO.

Companies
151
In LeadWave's database, October 2026
Total funding raised
$3.2B
Across 70 funded companies
Median headcount
20
Of 116 with a known headcount
Median year founded
2015
Of 139 with a known year

The largest SaaS companies in Seattle

The top 30 of 151, strongest matches first, then by size. Headcount is the latest known figure.

The largest SaaS companies in Seattle
CompanyWebsiteEmployeesHeadcountFundingLinkedInCEO
1Avalaraavalara.com1,001–5,0003,517$341MLinkedInScott McFarlane
2Outreachoutreach.io1,001–5,0001,421$100M–500MLinkedInBelinda Prince
3PItchbookpitchbook.com1,001–5,0001,012$13.8MLinkedInJohn Gabbert
4Highspothighspot.com501–1,000764$396.9MLinkedInDavid Wortendyke
5PayScalepayscale.com501–1,000579$33.4MLinkedInJames Redfern
6Porch Groupporchgroup.com501–1,000510$311.8MLinkedInMatt Ehrlichman
7Marchexmarchex.com201–500——LinkedInEdwin Miller
8Qumuloqumulo.com201–500——LinkedInKiran Bhageshpur
9FLEXEflexe.com201–500330$144MLinkedInKarl Siebrecht
10Karatkarat.com201–500321$169.1MLinkedInJeffrey Spector
11Ai2allenai.org—320———
12Amperityamperity.com201–500257$187MLinkedInKabir Shahani
13Panoptopanopto.com51–200190$50.9MLinkedInJason Beem
14Tango Cardtangocard.com51–200180$64.8MLinkedInDavid Leeds
15skilljarskilljar.com51–200172$53.1MLinkedInSandi Lin
16Knockknockcrm.com51–200140$46.7MLinkedInDemetri Themelis
17Shelf Engineshelfengine.com51–200133$58.2MLinkedInStefan Kalb
18Research For Goodresearchforgood.com51–200—$502.5KLinkedInBaillie Buchanan
19Envisionenvisioninc.com51–200——LinkedInRodney Kuhn
20Kalungikalungi.com51–200——LinkedInFADI GEORGE
21Owl Insightsowl.health51–200101$16.4MLinkedInEric Meier
22Banzaibanzai.io51–20086$22MLinkedInJoe Davy
23CreativeLivecreativelive.com51–20071$58.3MLinkedInRoger Gonzalez
24Headsetheadset.io51–20071$24.1MLinkedInCy Scott
25Tatangotatango.com51–20068$600KLinkedInKevin Fitzgerald
26Globysglobys.com51–20067—LinkedInCraig Lindsay
27Discuss.iodiscuss.io51–20066$6.4MLinkedInSimon Glass
28Valantvalant.io51–20065$26.3MLinkedInRam Krishnan
29Shiftboardshiftboard.com51–20063$16.9MLinkedInSterling Wilson
30Aviyelaviyel.com51–20060—LinkedInJose Kuttan

SaaS companies in Seattle at a glance

  • The largest is Avalara, with 3,517 employees.
  • 70 have disclosed funding, $3.2B in total; 7 raised $100M or more.
  • Half were founded before 2015, and 17% in 2020 or later.
Top categoriesCompanies in Seattle on each industry list
Company sizeEmployees, for 148 companies with a known size
  • 1–1057 · 39%
  • 11–5056 · 38%
  • 51–20024 · 16%
  • 201–5005 · 3%
  • 501–1,0003 · 2%
  • 1,001–5,0003 · 2%
  • 5,001–10,0000 · 0%
  • 10,000+0 · 0%
Year foundedFor 139 companies with a known founding year
  • Before 20006 · 4%
  • 2000–200926 · 19%
  • 2010–201435 · 25%
  • 2015–201949 · 35%
  • 2020–202222 · 16%
  • 2023 or later1 · 1%
Funding raisedTotal disclosed funding, for 72 companies
  • Under $1M14 · 19%
  • $1M–5M15 · 21%
  • $5M–10M9 · 13%
  • $10M–50M20 · 28%
  • $50M–100M6 · 8%
  • $100M–500M7 · 10%
  • $500M–1B0 · 0%
  • $1B+1 · 1%

How this list was built

A company is on this list if its headquarters, as recorded in LeadWave's database, is in Seattle. Different spellings of the city count as one, and so do its districts: Brooklyn and Manhattan are part of New York City.

The data comes from LeadWave's database of SaaS and AI companies, last updated in October 2026. Companies that share a website are counted once. Headcount, funding and CEO come from public sources, so some fields are blank for smaller companies.

More SaaS company lists

Frequently asked questions

LeadWave's database lists 151 SaaS companies in Seattle as of October 2026. This page shows the 30 largest; the full list, with CEO contacts, is part of our 15,000+ SaaS companies list.