| Price from | $99.95/mo | $499/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 2 | 3 |
| Spec score · Performance Testing Software | 8.0 (#16) | 7.7 (#26) |
| Spec score · Load Testing Software | 7.9 (#7) | 7.7 (#9) |
| Integrations | The Help Desk lists webhooks, TravisCI, CircleCI, Jenkins, TeamCity, GitHub Service Hooks, New Relic, and HipChat integrations. | The supported integrations page lists Jenkins, Atlassian Bamboo, Git, Selenium, Appium, Dynatrace, AppDynamics, New Relic and Nagios. |
| Purpose | Loader.io is a cloud-based load testing service for stress testing web apps and APIs with thousands of concurrent connections. | WebLOAD simulates application traffic to test performance, scalability and reliability and help identify bottlenecks. |
| Security | The maker says load generator IP addresses can change between tests and provides an API endpoint for retrieving the current addresses for allow-listing. | The supported technologies page lists NTLM, Kerberos, SSL and TLS under security and authentication. |
| Support | The pricing FAQ directs users to [email protected] for questions and says paid plans include priority support. | The pricing page says plans include professional SLA support answered by performance engineers and describes engineer support during evaluation. |