These San Francisco-based companies are predominantly mid-sized to large software development firms, with a notable presence of companies specializing in AI and cloud infrastructure. Databricks provides a Data Intelligence Platform, while Railway offers a developer platform as a service. Cloudflare is a connectivity cloud provider, and Twilio enables personalized customer relationships through communications. Fastly enhances websites and applications, and Vercel specializes in building and securing personalized websites.
A significant pattern among these companies is their relatively recent founding, with many established in the 2010s and early 2020s. This indicates a focus on modern technological solutions, particularly in software development and AI, reflecting San Francisco's role as a tech hub. The strong emphasis on cloud infrastructure and AI solutions highlights a common strategic direction for these firms.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Databricksdatabricks.com
It provides a Data Intelligence Platform for organizations to manage their data effectively and leverage AI for better decision-making. |
15,896 | |||
| 2 |
Railwayrailway.com
Building a developer platform as a service. It applies human-friendly design to internet infrastructure, helping great ideas materialize without friction. |
8,770 | |||
| 3 |
Cloudflarecloudflare.com
The company is a leading connectivity cloud provider, empowering organizations to enhance speed and security while reducing complexity and cost |
7,489 | |||
| 4 |
Twiliotwilio.com
Platform enabling companies to build personalized customer relationships using communications and data across sales, marketing, service, and growth worldwide. |
6,921 | |||
| 5 |
Fastlyfastly.com
Enhance websites and applications by leveraging Fastly's edge cloud platform, catering to popular brands like Reddit, Pinterest, and Stripe |
1,415 | |||
| 6 |
Vercelvercel.com
A platform for frontend developers specializing in building, scaling, and securing personalized websites quickly, with customers including Under Armour and Nintendo |
960 | |||
| 7 | 765 | ||||
| 8 |
Anyscaleanyscale.com
Facilitating scalable AI and Python computing solutions for developers of all levels to create applications running efficiently across various platforms |
760 | |||
| 9 |
Computacenter UScomputacenter.com
Leading independent technology partner enabling digital transformation for large organizations through sourcing, transforming, and managing IT infrastructure with a focus on building long-term trust with customers |
734 | |||
| 10 |
DFT (DuPont Fabros Technology)digitalrealty.com
Specializing in data center solutions, the company merged with Dupont Fabros Technology in 2017, providing growth without limits Stay updated for further details |
537 | |||
| 11 |
Pantheonpantheon.io
The company provides a WebOps platform for creating and managing websites efficiently and securely, empowering teams to develop and maintain high-performing websites |
432 | |||
| 12 |
Together AItogether.ai
AI native cloud purpose-built for engineers and researchers, offering tooling across inference, model shaping, and pre-training, enabling reliable scaling of AI-native applications. |
385 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 13 |
Alchemyalchemy.com
Developer platform for building decentralized applications without managing blockchain infrastructure, used by top projects, with experienced engineers and A-list investors Hiring in engineering and go-to-market |
356 | |||
| 14 |
SB Energysbenergy.com
SB Energy is a leading Climate Infrastructure and Technology Platform developing, owning, and operating renewable energy projects at scale |
342 | |||
| 15 |
Basetenbaseten.co
The company provides infrastructure for deploying and serving ML models efficiently and cost-effectively, with optimized serving and autoscaling capabilities |
285 | |||
| 16 |
Pivotal Software, Inc.tanzu.vmware.com
Modernizing applications and infrastructure, simplifying multi-cloud operations, and empowering development and operations teams to deliver better software continuously. |
271 | |||
| 17 |
Scalityscality.com
This company offers storage and data management solutions for massive scale, unifying data from edge to core to cloud, trusted by major industries worldwide |
249 | |||
| 18 |
Rescalerescale.com
This company provides high performance computing on the cloud for various industries, enabling faster product innovation through intelligent automation and collaboration |
241 | |||
| 19 |
LambdaTest is now TestMu AItestmuai.com
An AI-powered test execution platform for enterprises, offering cross-browser and real devices testing, visual regression testing, and centralized analytics |
200 | |||
| 20 |
Renderrender.com
Render provides a modern cloud platform for developers and software teams to collaborate and build applications of any scale efficiently |
184 | |||
| 21 | 101 | ||||
| 22 |
BEARCloud Incbearcloud.ai
Specializing in transforming business operations to secure, cost-effective IT environments with comprehensive assessments, boutique approaches, and continued support for successful outcomes |
26 | |||
| 23 |
Out Taskouttask.ai
A leading technology solutions provider specializing in IT support, cyber security, compliance solutions, and managed services for businesses in the digital world |
7 | |||
| 24 |
Exlumina, Inc.exlumina.space
A forward-thinking aerospace company revolutionizing space and aerial transport technology, with a focus on developing high-speed rocket systems for global travel |
4 | |||
| 25 |
Kubezykubezy.com
Provider of powerful tools and services for creating and managing Cloud Native infrastructure, offering custom solutions tailored to business needs |
2 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
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