Apache JMeter vs LoadFocus

Apache JMeter is a free, open-source Java application for testing functional behavior under load and measuring performance. It can simulate heavy workloads on servers, networks and other systems. Supported test types include HTTP and HTTPS, SOAP and REST, FTP, JDBC, LDAP, JMS, email protocols, TCP, Java objects, and native commands or shell scripts. Its test IDE can record plans from browsers or native applications, then help users build and debug them. JMeter provides command-line operation on Java-compatible systems and can generate dynamic HTML reports. It also supports remote testing, pluggable samplers and timers, scripting such as Groovy and BeanShell, and plugins for analysis and visualization. Third-party open-source libraries connect it to Maven, Gradle and Jenkins for continuous integration. JMeter works at the protocol level: it does not execute JavaScript in pages or render them as a browser does. It requires Java 8 or later. The project recommends command-line rather than GUI operation for load testing and advises caution with untrusted JMX files, which may execute code when opened.

LoadFocus is a cloud platform for load testing, website page-speed testing, API monitoring and front-end UI testing. Load tests can use JMeter.jmx files or k6 JavaScript scripts; users can also describe a test in plain English and have the service generate a script in either format. The maker says a test can scale to more than 20,000 virtual concurrent users. Charts report response time, latency, hits and throughput per second, standard deviation, and the 50th, 90th and 99th percentiles. A Chrome extension and Jenkins CI plugin support creating or scheduling tests and checking results, while direct reporting integrations are listed for Datadog and Azure Application Insights. Customers can choose EU or US data storage regions. LoadFocus has free plans for API monitoring and load testing, and a 7-day trial is listed. Paid plans start at $19/mo. Plan test-run limits apply: users who reach an allowance must upgrade to unlock more runs. The maker presents it for engineering teams, including developers, web agencies, product owners and DevOps engineers.