STS Software

Blackburn Labs

★ 10

Companies in healthcare, education, and real estate needing bespoke software with hands-on senior engineering

Blackburn Labs is a Providence, Rhode Island software development firm founded in 2015 by CEO and CTO Rob Blackburn. Named a Clutch Global Leader and Top Health and Wellness App Developer in Providence, they hold a perfect 5.0 rating across 15+ verified reviews. They specialize in bespoke web and mobile application development with particular strength in healthcare, education, and real estate verticals. In 2022 they expanded by acquiring Trilix's software application division, adding team depth and client breadth. Their practice covers application architecture, engineering, QA, deployment, and ongoing maintenance.

Cheesecake Labs

★ 10

Companies seeking nearshore AI, blockchain, and mobile development

Cheesecake Labs is a software development company founded in 2013 in Florianopolis, Brazil. With 100+ employees and 300+ digital products delivered, they rank #7 globally on Clutch in 2025 and #1 in Latin America. Named Clutch Champion 2023 (top 10% globally) and #29 on Clutch 1000 List. Specialize in AI, Blockchain, and IoT.

Diffco

★ 10

Startups and enterprises seeking AI-powered mobile applications

Diffco is a Silicon Valley-based AI development company headquartered in Sunnyvale, California with over 16 years of experience. Recognized by Clutch as the #1 AI development company with a perfect 5.0 rating, they specialize in mobile apps with AI integration including image recognition, face recognition, and computer vision. Featured on the Clutch 1000 list for 2023.