Can you please tell me which companies are engaged in the development of applications and software using blockchain technology? Which of them would you recommend to consider for cooperation?

If you need to create high-quality and efficient software that will help your business at all its stages, you can apply for it to a blockchain-based software development company - https://pharosproduction.com/blockchain-development-company. They have been working in the development market for quite some time now and can offer a really good and quality solution for your project.