Apptunix
They work out of the USA, UAE, and India and focus on AI-powered mobile and web apps. As an AI app development company in USA, they work extensively with machine learning, analytics, and automation tools. They also handle Android app development for industries like fintech, logistics, delivery, and more.

Quickworks
From what I found, they mostly build on-demand apps and platforms with some AI features like automation, dispatching, and behavior insights. They also offer white-label options for quicker startup launches.

Blocktunix
This one combines AI and blockchain. They’re into generative AI apps, ML systems, and some Web3-related builds. Seems more suited for teams exploring newer tech stacks or decentralized-style apps.

Zfort Group
A U.S.-based team that works on ML, chatbots, automation, and data tools. They appear to focus on practical business use cases across e-commerce, healthcare, real estate, etc.

Rootstrap
They build AI-related mobile and digital products as well. Their work includes automation, user behavior insights, and on-demand workflows. They also offer some pre-built/white-label products for quicker development.

Simform
They’re more of a digital engineering/product development company, but they do build AI-driven systems, automate workflows, and create custom applications. Seems like they work mostly with mid-sized businesses.

Unicsoft
Another company that mixes AI, blockchain, and custom software. They help build predictive models, intelligent features in apps, and other industry-specific solutions.