| Price from | $0.60/mo | $200/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 6 | 5 |
| Spec score · Residential Proxy Services | 9.0 (#6) | 8.1 (#35) |
| Spec score · Proxy Software | 8.8 (#3) | 7.8 (#25) |
| Billing limit | Only successful 2xx or 3xx responses count toward bandwidth, and unused prepaid traffic does not expire. | Sandbox has no subscription fee and no included credits; proxy use requires purchasing top-up credits or upgrading. |
| Founded | KnoxProxy states it was founded in 2023. | 2020 |
| Free plan | No | Yes |
| Headquarters | The company-information section lists headquarters in Tallinn, Estonia. | SOAX identifies its headquarters as London, United Kingdom. |
| Integrations | KnoxProxy lists more than 81 copy-paste integration guides across nine categories. | The integrations directory lists anti-detect browsers including AdsPower, Dolphin Anty, GoLogin, Multilogin, and Octobrowser. |
| IP sourcing | Residential and mobile IPs are described as opt-in, compensated and revocable through SDK partnerships with annual audits. | SOAX says its proxy connections come from users who willingly share their bandwidth and describes its IP network as ethically sourced. |
| Product | KnoxProxy provides residential, mobile, ISP, and datacenter proxy networks for developers and data teams collecting public data at scale. | SOAX describes itself as a web access infrastructure platform for data collection, with proxy networks and scraper APIs. |
| Protocols | HTTP/S and SOCKS5 are available using the same credentials. | SOAX supports HTTP, HTTPS, and SOCKS5 over TCP and UDP, with username/password or IP-allowlist authentication. |
| Support | Support is advertised as 24/7 with a four-minute median first reply. | The pricing page lists basic support for Sandbox, 24/7 support on Builder through Scale, and 24/7 support plus a customer success manager on Enterprise. |
