Apica LoadTest vs Vegeta

Apica LoadTest creates, runs, and analyzes capacity and performance tests for web and cloud applications. Its workflow covers scripting, setup, building, execution, analysis, and reporting. Users can create or upload HTTP/S load-test scripts, select geographic test clusters, and work through a browser portal without local software downloads. The portal provides managed infrastructure, test execution and scheduling, reporting and analysis, and collaboration storage. Apica says its premium load test network supports tests of up to 2,000,000 concurrent users. Documentation also describes device testing for iPhone, Android, iPad, and Windows, including native mobile applications. Example integrations include AWS Code Pipeline, TeamCity, Jenkins, and Azure DevOps. LoadTest integrates with ZebraTester for exchanging scripts and results; ZebraTester can also run standalone on customer infrastructure. Apica offers full-service projects in which its experts design, script, and execute tests and work with customers on performance analysis and improvement. A blog page invites users to start a 30-day full-featured trial. The Self Service Portal is subscription-based by the month, but no price is listed.

Vegeta is a free, open-source HTTP load-testing tool and Go library that sends requests at a constant rate. Its command-line interface is built for UNIX-style composition, while the library offers use from Go programs. The project states that its load measurements avoid coordinated omission and that distributed testing is supported. Reports can be written as text, JSON, histograms, or HDR plots, and results can also be encoded as CSV, Gob, or JSON. The attack command can expose an optional Prometheus exporter. HTTP/2 works when supported by the server, including HTTP/2 over TCP without TLS. TLS options include client certificates and keys, custom root certificates, and ignoring invalid server certificates. The documented request timeout defaults to 30 seconds, with zero disabling timeouts. Prebuilt binaries, package-manager installs, distribution packages, and source builds are documented for Linux, macOS, Windows, API use, and self-hosting. The repository uses the MIT license.