AnoProxy

Bright Data, formerly known as Luminati Networks, is a leading web data platform and proxy service provider. It offers a comprehensive set of tools and services for businesses to collect public web data efficiently and ethically. 
Bright Data's offerings include various types of proxies (residential, datacenter, ISP, mobile), as well as web scraping tools, data collectors, and ready-to-use datasets.

HydraProxy is a US-based proxy provider that offers both residential and mobile proxies. It was founded in 2020 and has quickly gained popularity among small marketers and individuals due to its affordable pricing and quality services. The company offers a large pool of real residential IP addresses covering over 100 countries worldwide, as well as over 200,000 US 4G rotating mobile proxies and static mobile proxies. 

They distinguish themselves with flexible billing periods and the absence of monthly commitments, appealing to users seeking proxy services for short-term needs. The affordability and versatility of its residential and mobile proxy plans make it an ideal solution for various applications, including those necessitating rotating or sticky IPs, accurate geo-targeting, and enhanced detection avoidance capabilities.

Smartproxy is a proxy service provider established in 2018 that offers residential, datacenter, mobile, and ISP proxies.
They have a large proxy pool with over 55 million IPs across 195+ locations worldwide. Smartproxy provides solutions for web scraping, data collection, ad verification, brand protection, etc.

Oxylabs is a premium proxy service provider offering a comprehensive range of solutions including residential, datacenter, mobile, and ISP proxies.
They focus on providing reliable, high-performance proxies with advanced features for web scraping, data gathering, brand protection, and other use cases. Oxylabs has one of the largest proxy pools in the industry with over 100 million residential IPs.