Ranked · 8 of 10 assessed
Ordered by Agency List ScoreUX design and digital strategy for startups and enterprise organizations
AI-driven software testing and quality assurance for global enterprises
QA and testing services for web and mobile applications
Custom software development for startups and enterprises with a focus on scalability
Independent software QA testing and consulting services
Enabling digital transformation with AI and cloud solutions
Protein analysis for pharma, academia, and industry
Custom AI software development and automation for enterprise and mid-sized organizations
Also in United States · 5 not ranked here
3 have not yet been assessed on the Agency List Score. Alphabetical.About this ranking
What this page ranks
This page ranks 8 of the 10 assessed performance and load testing agencies in United States — the ones carrying a published score — out of 13 listed.
The score measures how well an agency documents its own work in public — named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than described as the client's own results. It does not measure client satisfaction, price, or availability.
Cohorts and awards
Agencies are compared within a cohort — here, Performance and Load Testing in United States. A cohort must be large enough to express the band being awarded: at least 8 assessed agencies for a top 25% award, 20 for top 10%, 40 for top 5%, and 300 for top 1%. This one holds 10, so the strongest award available here is top 25%.
The 3 performance and load testing agencies not yet assessed are listed on this page but not ranked.
A further 2 were assessed and no published evidence of their work was found, so no score is shown for them.
Paid placement
Partner agencies can buy a labelled placement block above the ranking on this page. It is always marked as paid and is never mixed into the ranked list.
Placement is paid; it does not affect the ranking, cohort membership, or any agency's score. Ranking position, cohort membership and the score itself are not for sale.
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Questions
- How many performance and load testing agencies are in United States?
- 13 are listed on Agency List in United States. 10 of them have been assessed on the Agency List Score as of October 2026, and 8 of those carry a published score.
- Which performance and load testing agency in United States is ranked highest?
- Appinessworld Interactive, with an Agency List Score of 95.8, ranks #1 of 10 assessed agencies in Performance and Load Testing in United States.
- Why are 5 performance and load testing agencies listed here but not ranked?
- 3 of the 13 listed have not yet been assessed on the Agency List Score. A further 2 were assessed and no published evidence of their work was found, so no score is shown for them. They each have a profile and are listed below the ranking, alphabetically, rather than being hidden or mixed into it.
- How is the ranking determined?
- By Agency List Score, within the Performance and Load Testing in United States cohort of 10 assessed agencies. The score is computed from evidence published on each agency's own website: named clients, quantified outcomes, and whether the outcome is attributed to the agency. Paid placement does not affect it.