Best Functional Testing Software in 2026
Updated
In short: testRigor is ranked #1 of 33 as of 3 October 2026, ahead of Robot Framework and ACCELQ. The best-ranked option with a free plan is Robot Framework. The lowest first paid tier on this page is BrowserStack Automate at $59/mo.
Functional testing software helps you check application behavior across the parts of your stack that matter. The ranking compares web, mobile and desktop app coverage, cross-browser support and authoring mode. It also includes parallel runs, self-hosted availability, free plans and paid starting prices. testRigor, Robot Framework and ACCELQ are the first entries, followed by Avo Assure and Playwright. Consider which application types and browsers your tests need to cover, then compare how each tool’s listed authoring and deployment options fit your team’s setup. The ordering offers a starting point for evaluating those capabilities against your testing workflow.
33 functional testing software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Authoring mode | |
|---|---|---|---|---|---|---|---|---|
| 1 |  testRigor | 8.8 | RecognisedAPIDocumented | $300/mo | Yes | — | — | View |
| 2 | Robot Framework | 8.5 | RecognisedAPIDocumented | Free | Yes | — | low_code | View |
| 3 |  ACCELQ | 8.4 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 4 | Avo Assure | 7.6 | RecognisedAPIDocumented | — | No | — | — | View |
| 5 | Playwright | 7.5 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 6 | WebdriverIO | 7.5 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 7 |  Keysight Eggplant Test | 7.5 | RecognisedAPIDocumented | — | No | — | — | View |
| 8 | BugBug | 7.5 | RecognisedAPIDocumented | $99/mo | Yes | — | — | View |
| 9 | Virtuoso | 7.3 | RecognisedAPIDocumented | — | No | — | — | View |
| 10 |  Squish | 7.3 | RecognisedAPIDocumented | — | No | — | code | View |
| 11 | Selenium | 7.2 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 12 | Nightwatch | 7.1 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 13 | Cypress | 7.1 | RecognisedAPIDocumented | $67/mo | Yes | — | — | View |
| 14 | Functionize | 6.7 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 15 | TestMu AI Web Automation (formerly LambdaTest Web Automation) | 6.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 16 | BrowserStack AutomateBrowserStack | 6.2 | RecognisedAPIDocumented | $59/mo | No | — | — | View |
| 17 | Maestro | 6.1 | RecognisedAPIDocumented | $250/mo | Yes | — | no_code | View |
| 18 | mabl | 5.7 | RecognisedAPIDocumented | — | No | — | — | View |
| 19 | TestCafe | 5.7 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 20 | Detox | 5.6 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 21 |  Leapwork | 5.5 | RecognisedAPIDocumented | — | No | — | — | View |
| 22 | Katalon Studio | 5.4 | RecognisedAPIDocumented | — | No | — | — | View |
| 23 | uTest | 5.4 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 24 |  Perfecto | 5.3 | RecognisedAPIDocumented | — | No | — | — | View |
| 25 |  Rainforest QA | 5.2 | RecognisedAPIDocumented | — | No | — | — | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which functional testing software is ranked first on Inferse?
testRigor is ranked #1 of 33 with a score of 8.8. Robot Framework is second and ACCELQ third.
How many of these have a free plan?
9 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, BrowserStack Automate has the lowest first paid tier we found: $59/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.