> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-in/san-francisco-ca/technology-information-and-internet/ # Technology and Internet Companies in San Francisco, CA The bigger technology and internet companies headquartered in San Francisco, CA, with what they do, their sizes and how to reach their people. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** Among the technology and internet companies counted in San Francisco, CA, the biggest by headcount range include Workday, Slack and Appsflyer. They are mostly very small: 75% have 50 or fewer employees. ## Which technology and internet companies are in San Francisco? Among the companies whose public profile lists Technology; Information and Internet as their industry and San Francisco, CA as their headquarters, the biggest by headcount range include Workday, Slack, Appsflyer, Postmates By Uber and Spin. Names link to a company profile where we have one. | Company | Employees | | --- | --- | | [Workday](https://enrich.chat/company/workday/) | 10,001+ | | Slack | 1,001 to 5,000 | | Appsflyer | 1,001 to 5,000 | | Postmates By Uber | 1,001 to 5,000 | | Spin | 1,001 to 5,000 | | Weebly | 1,001 to 5,000 | | Vacatia | 1,001 to 5,000 | | Ripple | 501 to 1,000 | | Nextdoor | 501 to 1,000 | | Moengage | 501 to 1,000 | | Clevertap | 501 to 1,000 | | Quantcast | 501 to 1,000 | | Twilio Segment | 501 to 1,000 | | Ironclad | 501 to 1,000 | | Turo | 501 to 1,000 | | Instawork | 501 to 1,000 | | Trulia | 501 to 1,000 | | Infosys Equinox | 501 to 1,000 | | Authorize.Net | 501 to 1,000 | | Legalon Technologies | 501 to 1,000 | | Rundeck | 501 to 1,000 | | Alltrails | 201 to 500 | | Yummy | 201 to 500 | | Sensor Tower | 201 to 500 | | Samba Tv | 201 to 500 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## What do technology and internet companies in San Francisco do? Technology; Information and Internet is a broad label. The most common NAICS codes among them are 541511 (41%), 541512 (6%) and 513210 (5%). **Figure: What technology and internet companies in San Francisco do.** Bars for the share of counted technology and internet companies with each code: 541511 41%, 541512 6%, 513210 5%, 517810 3%, 541613 3%. *Share of counted technology and internet companies in San Francisco by their NAICS code.* [NAICS 541511](https://enrich.chat/naics/541511/)[NAICS 541512](https://enrich.chat/naics/541512/)[NAICS 513210](https://enrich.chat/naics/513210/)[NAICS 517810](https://enrich.chat/naics/517810/)[NAICS 541613](https://enrich.chat/naics/541613/) ## How big are they? 75% of the technology and internet companies counted in San Francisco have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of technology and internet companies in San Francisco.** Seven columns for the share of counted technology and internet companies in San Francisco in each employee range: 11 to 50 75%, 51 to 200 20%, 201 to 500 3%, 501 to 1,000 1%, 1,001 to 5,000 1%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted technology and internet companies in San Francisco in each employee range.* ## How old are they? Most were founded in the 2010s (47%), then the 2020s (40%). **Figure: When technology and internet companies in San Francisco were founded.** Eight columns for the share of counted technology and internet companies in San Francisco founded in each era: Before 1960 0%, 1960s 0%, 1970s 0%, 1980s 0%, 1990s 3%, 2000s 10%, 2010s 47%, 2020s 40%. *Share of counted technology and internet companies in San Francisco by the era they were founded in, for the ones that list a founding year.* ## How technology and internet companies compare - 87% were founded in 2010 or later, against 54% across other cities on this site. ## How do you reach the people at technology and internet companies in San Francisco? The people to talk to are usually product, engineering and growth leaders. Build the list in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the technology and internet companies in San Francisco, CA ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the product, engineering and growth leaders at technology and internet companies in San Francisco, CA, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore Other industries in San Francisco: [Software Companies](https://enrich.chat/companies-in/san-francisco-ca/software-development/)[IT Services Companies](https://enrich.chat/companies-in/san-francisco-ca/it-services-and-it-consulting/)[Financial Services Companies](https://enrich.chat/companies-in/san-francisco-ca/financial-services/)[Advertising Agencies](https://enrich.chat/companies-in/san-francisco-ca/advertising-services/)[Real Estate Companies](https://enrich.chat/companies-in/san-francisco-ca/real-estate/)[Construction Companies](https://enrich.chat/companies-in/san-francisco-ca/construction/)[Hospitals and Health Care Organizations](https://enrich.chat/companies-in/san-francisco-ca/hospitals-and-health-care/)[Consulting Firms](https://enrich.chat/companies-in/san-francisco-ca/business-consulting-and-services/)[Nonprofit Organizations](https://enrich.chat/companies-in/san-francisco-ca/non-profit-organizations/)[Venture Capital and Private Equity Firms](https://enrich.chat/companies-in/san-francisco-ca/venture-capital-and-private-equity-principals/)[Design Firms](https://enrich.chat/companies-in/san-francisco-ca/design-services/)[Architecture Firms](https://enrich.chat/companies-in/san-francisco-ca/architecture-and-planning/)[Staffing and Recruiting Firms](https://enrich.chat/companies-in/san-francisco-ca/staffing-and-recruiting/)[Law Firms](https://enrich.chat/companies-in/san-francisco-ca/law-practice/)[Cybersecurity Companies](https://enrich.chat/companies-in/san-francisco-ca/computer-and-network-security/)[Biotechnology Companies](https://enrich.chat/companies-in/san-francisco-ca/biotechnology-research/)[Colleges and Universities](https://enrich.chat/companies-in/san-francisco-ca/higher-education/)[Education Organizations](https://enrich.chat/companies-in/san-francisco-ca/education-administration-programs/)[Legal Services Firms](https://enrich.chat/companies-in/san-francisco-ca/legal-services/)[All of San Francisco](https://enrich.chat/companies-in/san-francisco-ca/) Technology and Internet Companies in other cities: [New York, NY](https://enrich.chat/companies-in/new-york-ny/technology-information-and-internet/)[Los Angeles, CA](https://enrich.chat/companies-in/los-angeles-ca/technology-information-and-internet/)[Miami, FL](https://enrich.chat/companies-in/miami-fl/technology-information-and-internet/)[Austin, TX](https://enrich.chat/companies-in/austin-tx/technology-information-and-internet/)[Chicago, IL](https://enrich.chat/companies-in/chicago-il/technology-information-and-internet/)[Boston, MA](https://enrich.chat/companies-in/boston-ma/technology-information-and-internet/)[Palo Alto, CA](https://enrich.chat/companies-in/palo-alto-ca/technology-information-and-internet/)[Seattle, WA](https://enrich.chat/companies-in/seattle-wa/technology-information-and-internet/)[San Jose, CA](https://enrich.chat/companies-in/san-jose-ca/technology-information-and-internet/)[Atlanta, GA](https://enrich.chat/companies-in/atlanta-ga/technology-information-and-internet/) ## Frequently asked questions ### Which are the biggest technology and internet companies in San Francisco? Among those counted, they include Workday, Slack, Appsflyer, Postmates By Uber and Spin, ranked by headcount range. ### How big are technology and internet companies in San Francisco? 75% of those counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. ### Which companies count as technology; information and internet? Companies whose public profile lists Technology; Information and Internet as their industry and whose headquarters are in San Francisco, CA. ## Try this prompt Find the people at technology and internet companies in San Francisco ```text Use www.enrich.chat to find the product, engineering and growth leaders at technology and internet companies in San Francisco, CA, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Software Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/software-development/) - [IT Services Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/it-services-and-it-consulting/) - [Financial Services Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/financial-services/) - [Advertising Agencies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/advertising-services/) - [Technology and Internet Companies in New York](https://enrich.chat/companies-in/new-york-ny/technology-information-and-internet/) - [Technology and Internet Companies in Los Angeles](https://enrich.chat/companies-in/los-angeles-ca/technology-information-and-internet/) - [Technology and Internet Companies in Miami](https://enrich.chat/companies-in/miami-fl/technology-information-and-internet/) - [Technology and Internet Companies in Austin](https://enrich.chat/companies-in/austin-tx/technology-information-and-internet/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)