Top Performance Testing Software for API Testing

Between them, the 10 performance testing software on this page cover load testing (8), web testing (7), parallel testing (5) and UI testing (5). 10 of them have written a profile you can read before you get in touch.

1. 1

   

   LoadUI Pro

   Cross Browser Testing · Browser Performance Metrics · Cloud Load Testing

   LoadUI Pro is a performance testing tool from SmartBear for web services.

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2. 2

   

   Apica LoadTest

   Browser Performance Metrics · Cloud Load Testing · Load Testing

   Apica LoadTest is an application testing tool for checking how websites, apps, APIs and internet-of-things systems cope under traffic.

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3. 3

   

   QADeputy

   Cross Browser Testing · Web Testing · Parallel Testing

   QADeputy is a cloud-based test case management tool for software QA teams. It keeps test cases, suites, runs and reporting in one place, as a replacement for spreadsheets.

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4. 4

   

   NeoLoad

   Cross Browser Testing · Test Script Reviews · Load Testing

   NeoLoad is a performance testing tool that gives testers and developers automatic test design and maintenance.

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5. 5

   

   UbikLoadPack

   Load Testing · Web Testing · Parallel Testing

   UbikLoadPack is a set of plugins that extend Apache JMeter for more demanding load tests.

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6. 6

   

   Loadster

   Browser Performance Metrics · Load Testing · Web Testing

   Loadster is a cloud-based performance testing platform for websites, web applications and APIs.

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7. 7

   

   RedLine13

   Load Testing

   RedLine13 is a cloud load testing service designed first for Apache JMeter.

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8. 8

   

   Appium

   Web Testing

   Appium is an open source framework for automating tests of native, hybrid and mobile web applications. It controls iOS, Android and Windows apps through the WebDriver protocol.

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9. 9

   

   Loadium

   Load Testing · Web Testing · Parallel Testing

   Loadium is a load testing platform that runs performance tests written with open source tools.

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10. 10

    

    BlazeMeter

    Test Script Reviews · Load Testing · Parameterized Testing

    BlazeMeter is a testing platform from Perforce that brings performance testing, API testing and monitoring, and functional testing into one place.

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5 Oct 2026 · TrustList Editorial

Nine e-invoicing and tax-system deadlines in four days of news, and none of them in the EU or the US

Our own count: nine e-invoicing and tax-system changes published 2 to 5 October from seven countries, none in the EU or US. Median warning…

Nigeria

5 Oct 2026 · TrustList Editorial

Nigeria: NITDA National AI Innovation Challenge for N-ATLAS builders closes applications on 12 October 2026

Nigeria's digital economy ministry, through NITDA's NCAIR, takes applications until 12 October 2026 for working solutions built on the…

Spain

5 Oct 2026 · TrustList Editorial

Spain: Red.es opens a 40 million euro call for AI use cases aimed at SMEs and startups, open until about 10 November 2026

Red.es has invited associations and technology centres to build AI use cases that SMEs and startups can reuse. Budget EUR 40 million, up to…