Top Performance Testing Services in the United States
From Silicon Valley startups to Fortune 500 enterprises in New York, Austin, Seattle, and Boston, U.S. teams demand applications that scale fast and stay reliable under pressure. Performance testing services help you validate speed, stability, and scalability across web, mobile, APIs, and cloud platforms—before users feel the lag.
Clutch makes it easier to find trusted partners by verifying client reviews, case studies, and technical capabilities (from tooling to methodology). Use filters to narrow by tech stack, industry, budget, location, and certifications, then compare shortlists with confidence. Explore profiles to see proof of impact like reduced latency, higher throughput, and lowered infrastructure costs. Start exploring these additional directories:
• Top Performance Testing Companies
• Performance Testing Companies in San Francisco
• Performance Testing Companies in New York
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$100,000+$25 - $49 / hr250 - 999Boca Raton, FL
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SrinSoft Inc is a custom software development firm. Their team is based in Boca Raton, Florida and New York, New York and provides Custom Software Development and IT strategy consulting.
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$1,000+< $25 / hr1,000 - 9,999Bakersfield, CA
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See all 4 projectsQualimatrix Technologies Pvt Ltd is a company specializing in comprehensive software testing services, including App Testing, QA Testing, and Software Validation. With a strong emphasis on quality assurance, they have received overwhelmingly positive feedback, with reviewers highlighting their expertise, effective communication, and commitment to deadlines. Approximately 90% of reviewers appreciated their tailored testing approaches and proactive problem-solving skills.
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UndisclosedUndisclosed50 - 249New York, NY
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RTTS is a business intelligence company. The company is in New York, New York. Their team specializes in BI & big data consulting & SI and Application Testing.
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UndisclosedUndisclosed50 - 249Orange, CA
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SQA² is an Application Testing company launched in 1997. The team offers Application Testing and IT strategy consulting and is in Orange, California.
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UndisclosedUndisclosed50 - 249Cumming, GA
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Midsize Application Testing company TechArcis Solutions, Inc., is headquartered in Cumming, Georgia. The team focuses on Application Testing and IoT development.
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UndisclosedUndisclosed1,000 - 9,999Framingham, MA
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Applause is an Application Testing company based in Framingham, Massachusetts. Launched in 2007, the team offers Application Testing and UX/UI Design.
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UndisclosedUndisclosed50 - 249Atlanta, GA
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App development company and Application Testing company TestGrid.io is in Atlanta, Georgia. Their services include Mobile App Development and Application Testing.
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UndisclosedUndisclosed50 - 249Burnsville, MN
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SWAT Solutions, Inc., an Application Testing company, was launched in 1997. The firm provides Application Testing, and is midsize.
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UndisclosedUndisclosed250 - 999Alpharetta, GA
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RapidIT Inc is an Application Testing company. The team specializes in Application Testing and Recruiting and is located in Alpharetta, Georgia and Hyderabad, India.
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$10,000+$25 - $49 / hr250 - 999Houston, TX
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Established in 1999, TISA Software LLC is a midsize CRM consulting and SI company. Their services include CRM consulting and SI and IT staff augmentation.
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$10,000+$25 - $49 / hr50 - 249New York, NY
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See all 5 projectsQAwerk is a professional software testing company specializing in application quality assurance, app testing, and software QA. Reviewers consistently commend QAwerk for their impressive quality of work, high responsiveness, and proactive suggestions, with 100% positive feedback regarding their thorough testing and effective communication. Approximately 75% of reviewers highlight QAwerk's ability to adapt and integrate into client workflows seamlessly.
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UndisclosedUndisclosed10 - 49Indianapolis, IN
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Finch Automation Inc, an Application Testing company, is located in Indianapolis, Indiana and Fort Wayne, Indiana. Their services include Application Testing.
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UndisclosedUndisclosed10 - 49Cleveland, OH
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Established in 2012, Emerald Built Environments is an Application Testing and Environmental Consulting company. Their services include Application Testing and Environmental Consulting.
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UndisclosedUndisclosed10 - 49Charlotte, NC
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R88, Inc. Is a small Application Testing and Business Consulting company in Charlotte, North Carolina. The team focuses on Application Testing and Business Consulting.
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UndisclosedUndisclosed10 - 49Baltimore, MD
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Application Testing and Engineering company Building Envelope Consultants and Scientists is headquartered in Baltimore, Maryland. Their services include Application Testing and Engineering.
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UndisclosedUndisclosed10 - 49Englewood, CO
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Small cloud consulting & SI and Application Testing company Nicman Group, is located in Englewood, Colorado and Clifton, New Jersey. The team offers cloud consulting & SI and Application Testing.
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UndisclosedUndisclosed10 - 49Austin, TX
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Intoollect is an Austin, Texas-based Application Testing company. The team provides Application Testing.
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UndisclosedUndisclosed10 - 49Dallas, TX
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Application Testing company Omni Sourcing, Inc. Was established in 2012. The firm focuses on Application Testing.
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UndisclosedUndisclosed10 - 49Phoenix, AZ
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Electric Applications Incorporated is an Application Testing company. They are based in Phoenix, Arizona and have small team. Their team offers Application Testing.
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UndisclosedUndisclosed250 - 999Fremont, CA
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Agama Solutions Inc is an Application Testing company. The Fremont, California-based company was launched in 2006. Their services include Application Testing and IT strategy consulting.
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UndisclosedUndisclosed250 - 999San Jose, CA
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Performance Lab is an Application Testing company launched in 2008. Their team focuses on Application Testing.
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UndisclosedUndisclosed250 - 999Indianapolis, IN
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Located in North Sydney, Australia and London, England, iLAB is an Application Testing company. They offer Application Testing.
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UndisclosedUndisclosed250 - 999Lombard, IL
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Located in Lombard, Illinois, Consulting Services Corporation is an IT strategy consulting company. They focus on IT strategy consulting and Application Testing.
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UndisclosedUndisclosed250 - 999Santa Clara, CA
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EffOne is a custom software development firm based in Santa Clara, California. They focus on Custom Software Development and Application Testing.
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UndisclosedUndisclosed250 - 999Santa Clarita, CA
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KRG Technologies Inc. Is an Application Testing company. The Santa Clarita, California-based agency focuses on Application Testing and BI & big data consulting & SI.
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UndisclosedUndisclosed1,000 - 9,999Santa Clara, CA
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Apexon is a big data company. They are located in Santa Clara, California and have large team. Their services include BI & big data consulting & SI and IT managed services.
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UndisclosedUndisclosed50 - 249Vancouver, WA
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NResult is a midsize Vancouver, Washington-based Application Testing company. The team provides Application Testing.
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UndisclosedUndisclosed50 - 249Chico, CA
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Shasta QA , an Application Testing company, was launched in 2002. The midsize team offers Application Testing and Custom Software Development.
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UndisclosedUndisclosed10 - 49Houston, TX
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R-Tech USA INC is an Application Testing company established in 2012. Their team offers Application Testing and UX/UI Design.
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UndisclosedUndisclosed10 - 49Los Altos, CA
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Practical SQA, an Application Testing company, is located in Los Altos, California. Their services include Application Testing and Mobile & App Marketing.
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UndisclosedUndisclosed50 - 249Cincinnati, OH
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The ChemQuest Group, Inc., a Business Consulting company, was launched in 1976. The firm specializes in Business Consulting and Application Testing.
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UndisclosedUndisclosed50 - 249Rockville, MD
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AEGIS.net, Inc. Is an IT strategy consulting company based in Rockville, Maryland. They focus on IT strategy consulting and Web Development and were founded in 1996.
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UndisclosedUndisclosed50 - 249San Jose, CA
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BetaSoft Inc. Is a cloud consulting & SI company. Their midsize team of employees is based in San Jose, California. Their team provides cloud consulting & SI and Application Testing.
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UndisclosedUndisclosed50 - 249Overland Park, KS
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IDatalytics is a business intelligence company. They are based in Overland Park, Kansas and have midsize team. Their services include BI & big data consulting & SI and cloud consulting & SI.
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UndisclosedUndisclosed50 - 249Franklin Township, NJ
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IT strategy consulting company Melillo Consulting offers IT strategy consulting and BI & big data consulting & SI. They are headquartered in Franklin Township, New Jersey and New York, New York.
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$5,000+$25 - $49 / hr10 - 49Irwindale, CA
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See all 7 projectsProfSquad is a specialized company offering comprehensive Software Quality Assurance services, including App Testing and Development Testing. Over 90% of reviews highlight their expertise, timely delivery, and ability to significantly improve product reliability and user experience. They are praised for flexible service models and deep integration with client teams, with no substantial areas for improvement noted.
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$1,000+$50 - $99 / hr50 - 249San Francisco, CA
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ACCELQ is a branding company. The team is headquartered in San Francisco, California, and their services include Branding and Custom Software Development.
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$1,000+$50 - $99 / hr2 - 9Bothell, WA
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Small Application Testing company Autonomicsoft Solutions LLC, is located in Bothell, Washington. Their services include Application Testing and ERP consulting and SI.
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UndisclosedUndisclosed250 - 999Charlotte, NC
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Cheetah Agency is a. The team provides and is in.
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UndisclosedUndisclosed2 - 9Palo Alto, CA
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Application Testing company BlazeRunner provides Application Testing. They were founded in 2019.
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UndisclosedUndisclosed2 - 9San Jose, CA
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Founded in 1999, Calypso Systems, Inc., a small Application Testing company, is located in San Jose, California. Their services include Application Testing and BI & big data consulting & SI.
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UndisclosedUndisclosed2 - 9Fremont, CA
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Cordia Solutions is an Application Testing company. Launched in 2021, the team specializes in Application Testing and BI & big data consulting & SI.
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UndisclosedUndisclosed2 - 9Coppell, TX
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AyasCloud Inc is an Application Testing company launched in 2020. The team focuses on Application Testing.
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UndisclosedUndisclosed50 - 249Ramsey, NJ
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See all 2 projectsUbertesters Inc. is a Software Quality Assurance company specializing in App Testing and QA Testing services. They receive overwhelmingly positive feedback, with 100% of clients praising their communication, flexibility, and ability to identify critical bugs; 95% of critical issues are resolved before release. Their comprehensive crowdtesting and real-world feedback significantly enhance app quality and reduce crash rates, leading to improved client satisfaction and faster release cycles.
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UndisclosedUndisclosed10 - 49Woodbury, MN
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Established in 1991, SVI America is an application development company and Application Testing company. The team offers Mobile App Development and Application Testing.
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UndisclosedUndisclosed10 - 49Minnetonka, MN
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Performetriks is a Minnetonka, Minnesota-based Application Testing company. Established in 2017, the team focuses on Application Testing and Custom Software Development.
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$1,000+$25 - $49 / hr10 - 49Pleasanton, CA
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Klystron is a SEO services firm. Their team is headquartered in Pleasanton, California. The firm specializes in Search Engine Optimization and Custom Software Development.
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UndisclosedUndisclosed50 - 249Irving, TX
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Based in Irving, Texas and Hyderabad, India, QualiZeal is a midsize Application Testing company. Their services include Application Testing and cloud consulting & SI.
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UndisclosedUndisclosed50 - 249Aventura, FL
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Application Testing company IntelliSource Technologies focuses on Application Testing. They were established in 2019.
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UndisclosedUndisclosed50 - 249Vienna, VA
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Steadfast Technologies is a midsize Application Testing company located in Vienna, Virginia. Their services include Application Testing.
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List of the Top 15 United States Performance Testing Companies
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$5,000+Undisclosed50 - 249Seattle, WA
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
100% Application Testing50% Performance Testing -
$5,000+$25 - $49 / hr250 - 999Mountain View, CA
Ability to deliver
36.6/40.017/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
100% Application Testing35% Performance Testing -
$5,000+$25 - $49 / hr50 - 249Boise, ID
Ability to deliver
37.3/40.017.4/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
100% Application Testing10% Performance Testing -
$50,000+$50 - $99 / hr1,000 - 9,999New York, NY
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
$1,000+< $25 / hr250 - 999New York, NY
Ability to deliver
35.4/40.016/20 Reviews9.8/10 Clients & Experience9.6/10 Market PresenceService focus
100% Application Testing10% Performance Testing -
$10,000+$50 - $99 / hr50 - 249Lakewood, CO
Ability to deliver
38.4/40.018.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
$50,000+$25 - $49 / hr1,000 - 9,999Houston, TX
Ability to deliver
35.6/40.017.6/20 Reviews8.4/10 Clients & Experience9.6/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
$10,000+$50 - $99 / hr50 - 249Chicago, IL
Ability to deliver
35.1/40.016.8/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
15% Application Testing25% Performance Testing85% Other -
$1,000+$50 - $99 / hr50 - 249Boise, ID
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31.2/40.016.4/20 Reviews8.6/10 Clients & Experience6.2/10 Market PresenceService focus
100% Application Testing10% Performance Testing -
$5,000+< $25 / hr250 - 999Sunnyvale, CA
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27.1/40.018/20 Reviews1.6/10 Clients & Experience7.5/10 Market PresenceService focus
100% Application Testing10% Performance Testing -
$10,000+$25 - $49 / hr50 - 249McLean, VA
Ability to deliver
26.8/40.017.2/20 Reviews4.3/10 Clients & Experience5.3/10 Market PresenceService focus
45% Application Testing20% Performance Testing55% Other -
$5,000+$25 - $49 / hr10 - 49New York, NY
Ability to deliver
21.2/40.017.2/20 Reviews0/10 Clients & Experience4/10 Market PresenceService focus
100% Application Testing20% Performance Testing -
$5,000+$50 - $99 / hr10 - 49Memphis, TN
Ability to deliver
26/40.016.2/20 Reviews3.7/10 Clients & Experience6.2/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
$25,000+$150 - $199 / hr50 - 249Norcross, GA
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24.6/40.016.4/20 Reviews2.4/10 Clients & Experience5.8/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
$5,000+$200 - $300 / hr2 - 9Indianapolis, IN
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21.5/40.016.2/20 Reviews0/10 Clients & Experience5.3/10 Market PresenceService focus
10% Application Testing100% Performance Testing90% Other -
$10,000+< $25 / hr10 - 49Harrington, DE
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21.8/40.016.8/20 Reviews1/10 Clients & Experience4/10 Market PresenceService focus
10% Application Testing20% Performance Testing90% Other -
$1,000+$25 - $49 / hr10 - 49Kalamazoo, MI
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21.8/40.016.6/20 Reviews0/10 Clients & Experience5.2/10 Market PresenceService focus
10% Application Testing10% Performance Testing90% Other -
UndisclosedUndisclosed1,000 - 9,999Santa Clara, CA
Ability to deliver
9.7/40.00/20 Reviews1.2/10 Clients & Experience8.5/10 Market PresenceService focus
100% Application Testing25% Performance Testing -
$25,000+$25 - $49 / hr1,000 - 9,999San Mateo, CA
Ability to deliver
7.2/40.00/20 Reviews1.5/10 Clients & Experience5.7/10 Market PresenceService focus
20% Application Testing20% Performance Testing80% Other -
UndisclosedUndisclosed250 - 999Monrovia, CA
Ability to deliver
6/40.00/20 Reviews0/10 Clients & Experience6/10 Market PresenceService focus
100% Application Testing25% Performance Testing -
UndisclosedUndisclosed50 - 249Atlanta, GA
Ability to deliver
5.5/40.00/20 Reviews0/10 Clients & Experience5.5/10 Market PresenceService focus
40% Application Testing100% Performance Testing60% Other -
$250,000+$50 - $99 / hr1,000 - 9,999Morrisville, NC
Ability to deliver
5.7/40.00/20 Reviews0/10 Clients & Experience5.7/10 Market PresenceService focus
20% Application Testing20% Performance Testing80% Other -
UndisclosedUndisclosed10 - 49Austin, TX
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5.2/40.00/20 Reviews0/10 Clients & Experience5.2/10 Market PresenceService focus
80% Application Testing50% Performance Testing20% Other -
$1,000+< $25 / hr50 - 249Chesterbrook, PA
Ability to deliver
10.2/40.00/20 Reviews5.6/10 Clients & Experience4.6/10 Market PresenceService focus
20% Application Testing25% Performance Testing80% Other -
$1,000+Undisclosed50 - 249Dublin, CA
Ability to deliver
5.7/40.00/20 Reviews0/10 Clients & Experience5.7/10 Market PresenceService focus
100% Application Testing20% Performance Testing -
$10,000+$25 - $49 / hr50 - 249Chicago, IL
Ability to deliver
9.1/40.00/20 Reviews3.9/10 Clients & Experience5.2/10 Market PresenceService focus
10% Application Testing35% Performance Testing90% Other -
UndisclosedUndisclosed50 - 249Walnut, CA
Ability to deliver
4.9/40.00/20 Reviews0/10 Clients & Experience4.9/10 Market PresenceService focus
100% Application Testing20% Performance Testing -
UndisclosedUndisclosed250 - 999San Francisco, CA
Ability to deliver
4/40.00/20 Reviews0/10 Clients & Experience4/10 Market PresenceService focus
30% Application Testing20% Performance Testing70% Other -
Undisclosed$50 - $99 / hr10 - 49Los Angeles, CA
Ability to deliver
21.3/40.015.8/20 Reviews0/10 Clients & Experience5.5/10 Market PresenceService focus
50% Application Testing10% Performance Testing50% Other -
UndisclosedUndisclosed50 - 249Atlanta, GA
Ability to deliver
0/40.00/20 Reviews0/10 Clients & Experience0/10 Market PresenceService focus
80% Application Testing50% Performance Testing20% Other
U.S. Performance Testing FAQs
U.S. providers operate in one of the world’s most mature tech markets, with deep experience across hyperscale cloud, SaaS, fintech, health care, and media streaming. Many teams have hands-on expertise with CI/CD pipelines, SRE practices, and observability stacks common in the U.S. (Datadog, New Relic, Grafana).
Furthermore, their proximity to hubs like the Bay Area, Seattle, and New York also means better access to talent, faster collaboration across time zones, and familiarity with standards like SOC 2, HIPAA, PCI DSS, and FedRAMP.
Pricing varies because of variables like scope, tooling, and industry compliance needs. On Clutch, most performance testing agencies in the U.S. charge:
- Hourly: $75 – $200+ per hour for senior U.S.-based engineers
- Fixed-scope engagements: $20,000 – $80,000 for test strategy, scripting, runs, tuning, and reporting on a typical web or API product
- Enterprise programs: $100,000 – $300,000+ for multi-release load testing, cloud cost optimization, and ongoing performance engineering
Expect higher rates for regulated industries, complex microservices, advanced cloud performance testing, and 24/7 test windows.
- Fintech and banking — low-latency transactions, fraud/risk engines
- Health care — secure PHI handling, EHR integrations, patient portals
- E-commerce and retail — Black Friday/Cyber Monday readiness, checkout flows
- Media and gaming — streaming concurrency, multiplayer stability
- SaaS and enterprise software — multi-tenant scaling, API rate limits
- Logistics and travel — real-time inventory and booking engines
- Public sector and education — high-traffic portals and exam systems
Many agencies in the U.S. support a broad spectrum of markets and niches. It’s essential to check if they have experience in your sector so they can understand the nuances and requirements that come with the responsibilities.
- Validate domain fit — Look for projects similar to your architecture.
- Assess methodology — Ask how they baseline, set SLOs, generate realistic data, and interpret p95/p99 latency, throughput, and error budgets.
- Review tooling depth — JMeter, k6, Gatling, Locust, or LoadRunner for application load testing; APM and tracing with Datadog, New Relic, OpenTelemetry; profiling at code, DB, and network layers.
- Check CI/CD integration — Can they run tests in pipelines and gate releases with performance criteria?
- Look for full-stack tuning — Web vitals and website speed testing services, DB indexing, caching/CDN strategy, container/resource sizing, and cloud cost controls.
- Verify proof — Case studies with quantified wins (e.g., 40% lower latency), references, and transparent reporting.
- Tool-only focus – They talk only about scripts, not about baselines, scenarios, KPIs, or root-cause analysis.
- No production realism – No plan for synthetic data, cache warmups, think times, or peak/soak/stress test mixes.
- Limited visibility – Can’t tie results to APM metrics, logs, and traces; no code-level profiling or DB analysis.
- Vague reporting – No clear narrative, recommendations, or prioritized remediation plan.
- Unrealistic promises – Guarantees “no downtime” or “2x speed” without assessing architecture and constraints.
- One-and-done mindset – No post-fix validation or ongoing scalability testing solutions for future releases.
Don’t just look at vanity metrics. Be thorough when doing due diligence so you can uncover red flags that might impact your project.