If you want to ensure your software performs optimally, it's crucial to partner with top performance testing companies. They specialize in multiple testing services such as load testing, stress testing, and performance engineering to guarantee your software performs at its best under various circumstances. By leveraging their expertise and advanced testing tools, they can detect and resolve performance issues to prevent major software bugs and problems. Filter them by client reviews, team size and cost to narrow down the best team for your project.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

Zudu
Award WinnerRecipient of a Best Design Award for outstanding work.Dreams Have No Limits In A Digital World
Why not try some top quality UK delivery. Zudu is an award-winning, industry-leading, software development agency based in London and Dundee. Our specialist team create jaw-dropping digital experiences and develop successful products...
Top Services:
- Mobile App Development
- Web Development
- Software Development
- UI/UX Design
- IoT
- Show more
- Location
- Dundee, United Kingdom
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 20 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsZudu Services
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Zudu Reviews & Testimonials

Web Development Review from Scott Taylor
Zudu provided me with a bespoke app for our fire safety business. It was a simple, clear and straight forward process which was completed quickly.I intend on using them further!

Product Design Review from James Cadwaladr
I have been extremely impressed with Zudu’s product development, ongoing and almost immediate support at all times and also genuine understanding and commerciality of both Rik and James which has meant being able to easily translate concepts into product. Excellent UX, UI and Customer support. We look forward to a long and fruitful relationship.

Web Development Review from Danny Kelly
Zudu supported our organisation to develop a web app to benefit local staff working with people who use substances. Zudu went above and beyond to understand the concept by speaking with staff and visiting our service to see where the app would have the most impact. It was clear Zudu were motivated and passionate about what they do and so for us were the obvious choice for this project.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsEnsuring Quality, Empowering Excellence.
KiwiQA is a global leader in software testing, delivering high-quality solutions across industries. With expertise in automation, performance, security, and accessibility testing, we empower businesses to launch flawless and secure software faster...
Top Services:
- Software Testing
- Location
- Sydney, Australia
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $10/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsKiwiQA Services Services
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Enterprise Software Development That Reaches Production
Redlio Labs is an Ahmedabad, India-based enterprise software development company founded in 2014. The company develops custom software and ERP systems for mid-size and large organizations and provides dedicated senior engineering teams and IT staff augmentation. It serves clients globally and reports 12+...
Top Services:
- Web Design
- Web Development
- Digital Marketing
- Software Development
- CRM Consulting
- Show more
- Location
- Ahmedabad, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsRedlio Labs Services
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Redlio Labs Reviews & Testimonials
Ruchi Hansaliya's Review Sourced from Google
The worst experience I have had with this company. When a candidate comes for an interview, she/he will not provide a proper PC screen. So how can a candidate complete his interview?And also the hiring process is too slow.
TUSHAR KANJARIYA's Review Sourced from Google
As a full stack developer at Redlio Designs, I can confidently say that this company is an absolute dream to work for. The working environment is top-notch, providing the perfect balance of professionalism and comfort. What truly sets Redlio apart, though, is its incredible team. From day one, I've been surrounded by colleagues who are not only talented but also incredibly supportive. Our seniors lead by example, offering guidance and mentorship that has been instrumental in my growth and development. Working here feels like being part of a family where everyone is genuinely invested in each other's success. If you're looking for a workplace where you can thrive both personally and professionally, look no further than Redlio Designs.
Angad Thakar's Review Sourced from Google
As the Business Development Manager at Redlio Designs, I can confidently say that this is a company that prioritizes excellence and innovation in the IT industry. Working here has been an enriching experience, thanks to the supportive team, forward-thinking leadership, and exciting projects we undertake.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWe create exceptional tailor-made Website Design.
Software Shrimps Inc is a dynamic digital marketing and development company dedicated to enhancing businesses' online presence...
Top Services:
- Design Services
- Web Design
- eCommerce Development
- UI/UX Design
- Web Development
- Show more
- Location
- League City, Texas
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 1 Project Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSoftware Shrimps Services
Data sourced from the agency's DesignRush profileAdoption Lady Bay Construction Ltd LUPPY
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