Tucson

577–600 of 715 companies

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  Sputtr

  Home & living

  Early stage

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  Sswug

  Media

  Early stage · 2–10 employees

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  St Luke's Home

  Kids

  Early stage · 11–50 employees · $10K raised

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  Stackhouse

  Real estate

  Stackhouse is a pioneering company in the real estate sector, focusing on scalable and innovative housing solutions. The company specializes in creating agile and elevated container homes that can be deployed anywhere in the world. This unique approach is backed by 17 patent-pending innovations, making Stackhouse a leader in the modular housing market. Stackhouse primarily serves individuals and families looking for flexible and sustainable living options. The company operates in the global real estate market, targeting urban areas where traditional housing solutions may be limited or too expensive. The business model revolves around the design, manufacturing, and delivery of container homes. Revenue is generated through the sale of these homes, as well as potential licensing of their patented technologies to other real estate developers. Stackhouse's innovative approach not only addresses the need for affordable housing but also offers a scalable solution that can adapt to various geographic and economic conditions.

  Early stage · 11–50 employees · $120K raised

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  Staff Matters

  Jobs & recruitment

  Early stage · 11–50 employees

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  Startup Tucson

  Event tech

  Early stage · 11–50 employees · $320K raised

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  Stealth Startup

  Early stage

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  Stealth Startup_288

  Early stage

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  Steele Racing Products

  Transportation

  Early stage · 2–10 employees

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  STEP - Student Expedition Program

  Education

  Early stage · 2–10 employees

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  Stevens & Ricci

  Legal

  Early stage · 2–10 employees

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  Stevens Lloyd Group

  Legal

  Early stage · 2–10 employees

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  StimAire

  Health

  StimAire has developed a groundbreaking neuromodulation platform designed to treat obstructive sleep apnea, a market valued at $30 billion globally. The company's device is a needle-injectable hypoglossal nerve stimulator that can be administered in an office setting in under 15 minutes, eliminating the need for major surgery and hospital stays. This patient-friendly solution has shown positive results in clinical trials, offering a less invasive alternative to traditional treatments. The platform's potential applications extend beyond sleep apnea to include bladder urgency, gastrointestinal diseases, autoimmune disorders, depression, pain, and cluster headaches. The business model focuses on providing a versatile and minimally invasive treatment option, with revenue generated through the sale and application of its neuromodulation devices. The company targets healthcare providers and patients seeking effective and less invasive treatment options.

  Early stage · 2–10 employees · $1.6M raised

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  Strangers We Know

  Early stage

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  Strategia Analytics Inc.

  Early stage

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  Strategic Connective Solutions

  Jobs & recruitment

  Strategic Connective Solutions is a consulting firm that provides services aimed at fostering business growth and innovation. This global experience in creative thinking and system analysis shapes the firm's approach. The firm offers a range of services including strategic consulting, co-founder matchmaking, expert team building, strategic partnership facilitation, and personalized coaching. Additionally, they provide unique offerings such as outdoor team and executive training designed for experiential growth. Their business model appears to be based on providing these consulting and training services to a diverse clientele of individuals, organizations, and businesses. The company also seems to have an educational component, offering online courses and materials, possibly on a membership or pay-per-course basis. Strategic Connective Solutions targets startups and investors, particularly in the U.S. and Israeli markets, with services like investor matchmaking, venture capital advisory, and market entry consulting. They also engage in real estate ventures and tech innovation projects.

  Early stage · 1 employees

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  Stratford-group.com

  Early stage

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  SUB ONE TECHNOLOGY

  Enterprise software

  Sub-One specializes in providing advanced protective coatings for internal and external surfaces of metal tubing and precision components. The company's patented InnerArmor technology delivers wear and corrosion protection, significantly boosting efficiency and extending the operating life of various industrial applications. Sub-One serves clients in industries such as oil and gas, automotive, and industrial manufacturing, offering solutions that include diamond-like coatings, titanium nitride coatings, and silicon carbide coatings. The business operates in the global market for industrial coatings, focusing on high-performance, environmentally friendly solutions. Sub-One's business model revolves around selling these specialized coatings and related services, generating revenue through direct sales and partnerships with industry leaders. The company’s innovative approach not only reduces operational costs but also enhances the performance and longevity of critical components.

  Breakout · 2–10 employees · $58.0M raised

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  SunDanzer

  Energy

  Early stage · 11–50 employees · $4.6M raised

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  Sundial Energy

  Energy, Transportation

  Early stage · 2–10 employees

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  Sunshine Experts

  Home & living

  Early stage · 2–10 employees

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  SUPEREGO

  Security

  SUPEREGO Systems Inc. is a cybersecurity firm providing an external authorization layer for enterprise artificial intelligence systems. The company addresses the systemic risks associated with the increasing autonomy of AI agents integrated into corporate infrastructure. As operational capabilities of AI expand from software workflows to robotics, SUPEREGO's platform distinguishes between an AI's capability and its authority, dictating what actions a model is permitted to execute.The core of its offering is a blind, zero-trust authority gateway that secures the boundary of autonomous execution. The platform functions by intercepting structured tool calls from AI agents before they reach production systems. It then validates the agent's cryptographic identity, lease scopes, and active policies. This process is content-blind, meaning the gateway enforces compliance without inspecting the raw data within the model's context, thereby preserving data privacy.SUPEREGO's system operates on a five-step process for every action: an agent's call is first intercepted (Request); its identity, privileges, and policies are evaluated (Check); a one-time, signed cryptographic permit is either issued or denied (Permit); the action runs only within the strict limits of that permit (Execute); and finally, a tamper-evident, immutable audit trail is recorded for verification and compliance purposes (Receipt). This architecture is designed to 'fail closed,' meaning no action is authorized if the authority cannot be definitively checked. This methodology also serves as a defense against prompt injection, as an injected instruction may create a request but cannot create the authority to fulfill it.Established in 2026, the company is in its early stages, operating in a private alpha and engaging with design partners, enterprise risk teams, and pre-seed investors to refine its product. The technology is patent-pending. The target market includes enterprises deploying AI agents, regulated workflows with sensitive data, and multi-agent systems where policy-enforced access and a full decision trail are critical.

  Early stage · 1 employees

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  SurgicalSteps

  Health

  Early stage

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  Sushi Garden

  Food

  Breakout · 51–200 employees