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.
ELEKS
VerifiedVerified by the DesignRush team for authenticity and credibility.ELEKS, a trusted partner for guaranteed software engineering excellence, quality, and transparency.
ELEKS builds custom enterprise software across fintech, healthcare, energy, and logistics, with 1,000+ projects delivered over 30 years. It serves Fortune 500 companies and names like DPD and Drax. The software development firm is best for mid-to-large enterprises needing complex software development...
Top Services:
- Software Development
- Mobile App Development
- Cloud Consulting
- Cybersecurity
- AI Development
- Show more
- Location
- Chicago, Illinois
- Number of Employees
- 1000 & Up
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 12 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsELEKS Services
Data sourced from the agency's DesignRush profileAramex TAIT Acino GRTGaz Autodesk Blackboard Havas ESET Eagle teleologica
ELEKS Reviews & Testimonials
Software Development Review from John Armstrong
ELEKS was able to take our vision and help us deliver an app that empowers retail shareholders to make their voices heard. They’ve brought a depth and breadth of technical expertise and user experience design to challenge us on our assumptions on how people would want to interact with the app. From a mobile development perspective, we wanted to go to market with both an Android and an iPhone simultaneously.
Software Development Review from Mark Battcock
We are very happy with our ELEKS partnership; the dedication of the team is exceptional. We would certainly recommend ELEKS and would be happy to work with them again. In fact, they continue to be our partner for the 2nd phase of the CDX project to add even more customer services to the website.
Software Development Review from Huntly Christie
What impressed me about ELEKS is the culture. There is a very strong culture of discipline and performance, and software is a profession where discipline is very important. Good software development can only happen with a strong work ethic, and I think the ELEKS team really understands that.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsIn a world full of sunsets, we are the Northern light.
Kindgeek is an AI-native fintech product engineering company. We help licensed fintechs, payment companies, neobanks, and global enterprises build, launch, and scale regulated financial products...
Top Services:
- Software Development
- Web Development
- Mobile App Development
- Product Design
- UI/UX Design
- Show more
- Location
- Lviv, Ukraine
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 62 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsKindgeek Services
Data sourced from the agency's DesignRush profileJaja University of Basel eduki HyperJar The Interface Financial Group Grafter Hive Unique Digital Puls TUI
Kindgeek Reviews & Testimonials
Outsourcing Review from Pavlo Ivanishchin
Our collaboration with Kindgeek and their dedicated expertise in product development services, combined with our own specialized IOPS team in DevOps services, has been extensive. We've tackled a wide array of finance projects, both internal and external, which have encompassed diverse areas, including the development of leading fintech solutions for various financial services. Working closely together, we've harnessed our collective strengths and expertise, consistently delivering top-notch services that showcase our powerful synergy.Kindgeek's project management delivered items on time and promptly responded to our needs. They were adaptive, communicated effectively, and demonstrated proactive problem-solving skills, contributing significantly to our project's success.What we found most impressive and unique about Kindgeek was their unwavering professionalism, focus during meetings, and clear sense of accountability. Their commitment to delivering results and transparent communication set them apart in our eyes.
Software Development Review from Iryna Povkh
A people-oriented company with great social responsibility projects and proficiency in Product Design and Development and Digital Transformation Services.
IT Services Review from Dan Hnatkovskyy
I've had an excellent experience with the KindGeek team. Its project management is impeccable: processes are polished and in place, the desire to help their partners and clients is always there, and managers pay attention to client requirements. The team's engagement met the expectations, and their willingness to help and contribute with their vision to our product was impressive. They established a seamless workflow through a customer-centric culture of communication. (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsPremium Mobile App Development and AI Solutions
We work with Startups and Businesses with enterprising new ideas. Delivering Premium Mobile app development and AI Powered Software solutions. Our agile development model ensures speed of delivery and scalability, while our AI-powered solutions enhance functionality and user experience...
Top Services:
- Mobile App Development
- AI Development
- Staff Augmentation
- Software Development
- Wearables
- Show more
- Location
- Mumbai, India
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 86 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsWDI Services
Data sourced from the agency's DesignRush profileDavid Costlow Dale Foster Rohan Raut Alex Scalia Sherina Rathore Paul Davys Zachary Lynch Anand Mehrotra - Sattva Connect Vikas Dixit - Angel Broking Ruchika Karla - Accessibily
WDI Reviews & Testimonials
Mobile App Development Review from Konrad Korobowicz
Thanks to Wdi's expertise and dedication, the music app achieved a 400% increase in downloads within the first month of launch, demonstrating significant progress and success.
Mobile App Development Review from Abdelrahman ALMULLA
wdi took the vision we had and turned it into something even better. They built this incredibly detailed app that lets users filter hotels based on things like airport transfers, car services, or other specific amenities. Travelers can also quickly spot deals or limited-time offers with just a glance.One of the coolest parts is how the app keeps guests updated when theyre checked into a hotel - whether it's on-site events or nearby activities, theyll get notifications straight to their phone. The feedback system they added is a game-changer. Guests can send questions or share thoughts right from their rooms, and they get notified the moment theres a response.
Mobile App Development Review from Aaron Birkby
We had many very clear outcomes and timelines based on our needs that were identified before the project began. They provided regular updates and progress reports via email and virtual meetings throughout the project. Typically in two-week sprints.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsDesigning Products That Captivate, Innovate & Elevate.
Detekt Design Group is a leading product design agency in Austin, Texas. With over 20 years of experience, our team of engineers and designers specializes in bringing concepts to life. From electronics to embedded systems, we have successfully launched products in various sectors, including life sciences and...
Top Services:
- Product Design
- Branding
- Software Development
- Software Testing
- IoT
- Show more
- Location
- Austin, Texas
- Number of Employees
- Under 49
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 15 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDetekt Design Group Services
Data sourced from the agency's DesignRush profileRBG Neogen UT Austin Eurofins Abraxis SightLine Provisions Johns Hopkins Alexeter Technologies GDS Vertex GSD
Detekt Design Group Reviews & Testimonials
Engineering Design Review from Jim Whelan
Exceptional experience from initial design stage through production. Any concerns we had were addressed promptly by the team and inevitable hiccups (and there are always some) were handled professionally. I couldn't be more pleased with our project overall and recommend D[etekt] Design Group without hesitation. (Verified via email)
Product Design Review from Edgar Diaz
Working with the D[etekt] team has been very enjoyable and exciting. To be able to sketch up my idea and have their team put it in my hand was awesome. They were very patient and worked hard to create my prototype. I would highly recommend using them for your product development needs. (Verified via email)
Product Prototype Review from Chris Davis, PMP
Anna and the Detekt team were better than expected. We were frustrated with the lack of design creativity from our previous partner. Anna and Detekt took the time to listen to what we wanted to accomplish, asked really good questions and came up with a few solutions. Once we settled on a design concept they iterated it with us very quickly, achieving a design we are very happy with. I would highly recommend them.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTrusted IT Partner for SMBs & Enterprises Since 2001 | Dedicated Teams | Industry-Specific Solutions
Altoros is a 350+ person strong IT consulting and development group. For over 20 years, we've been assisting Global 2000 organizations in getting software products to market faster and reducing the cost of R&D experiments to enable stable business growth...
Top Services:
- Software Development
- Mobile App Development
- Web Design
- Web Development
- Staff Augmentation
- Show more
- Location
- Pleasanton, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 12 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAltoros Labs Services
Data sourced from the agency's DesignRush profileSiemens Toyota Hitachi Huawei Denso LikeFolio Dealflo iFit Walmart EQ Bank
Altoros Labs Reviews & Testimonials
Software Development Review from Daria Stolyar
We hired Altoros engineers as an essential extension of our client-facing internal teams. This was a tough decision because our reputation as a brand depends on the overall efficiency of our processes and we needed to make sure all risks are mitigated when it comes to delivery. Altoros has not let us down.Together with Altorosians we successfully deployed a number of tough and technologically complex projects on time. So our collaboration is certainly set to continue.
Software Development Review from Victoria Lewis
We enjoy working with our team, Roman Yurkin, Tatyana Kobzar, Svetlana Kalchanka and Tatiana Anop. They bring expertise and immense value to our business with each piece of work they complete. They are a major part of our business development and delivery.
Ruby on Rails Review from Greg Lipper
In my 30 years in the software business, I have never had as positive an experience with an outsourced development services provider as I have with Altoros. Each Altoros engineer we have worked with has been strong technically, estimated development times accurately, completed projects on time, and delivered code and projects with high quality. Beyond that, they have helped improve our thinking and approach with suggestions and ideas that were better than the spec of instructions we supplied.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsCrafting Custom Software & DevOps Outsourcing Solutions Since 2009.
We build AI-accelerated software products faster, smarter, and built to scale. From LLM integrations to full-stack delivery, our teams ship real value. Together with you.Were Valletta.Software a software development company where human engineers and AI work side by side to build faster, smarter...
Top Services:
- AI Development
- Mobile App Development
- Software Development
- Staff Augmentation
- Web Design
- Show more
- Location
- Cospicua, Malta
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $44/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 8 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsValletta Software Development Services
Data sourced from the agency's DesignRush profileVelocity 42 FOR Partnership Ltd Lumenis
Custom Software Development & Design for Growing Companies
Growing companies partner with Frogslayer on mission-critical technology projects requiring speed and precision. We rescue projects gone sideways, modernize & re-write outdated systems, wrangle complex data and integrations, launch new produ...
Top Services:
- Software Development
- Mobile App Development
- Location
- College Station, Texas
- Number of Employees
- 50 - 99
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsFrogslayer Services
Data sourced from the agency's DesignRush profileNCR Wrigley Texas A&M University Microsoft National Instruments Lupl Dunkin Donuts AOPA K2 Integrity Schlumberger
Frogslayer Reviews & Testimonials
May Halpirn's Review Sourced from Google
Curious about another reviewer who looked older, a job applicant, who didn't have his call returned. Frogslayer slung cliche pablum his way. Apparently they hire Jr. Devs but do they hire over a certain age? Do they know the law? Their Senior Dev is under 30 and was hired from being a student employee. Curious and curiouser. Maybe Frogslayer isn't as woke as they appear. Friend of mine went through the ringer with them was told they'd get feedback either way. Instead they got the standard blow off rejection after devoting way too much time on a company that might not value "employees over a certain age." Heads up Frogslayer. There are laws.
Jared L's Review Sourced from Google
one of the only companies in town actively seeking real beginners/students to become junior level developers using all stacks and not focused on a particular one but most importantly not stuck with legacy tech debt.
Heath Phillips's Review Sourced from Google
These guys are incredible at what they do. They helped me design a custom software that fit all of my companies needs. The time they spend understanding what my goals were was incredible. They also made tons of suggestions to control the cost. Highly recommend this team!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsInnovation Technology Solution.
Desun Technology Pvt. Ltd. is a leading software development company in Kolkata, specializing in comprehensive IT services, including web development and mobile app development. Our cutting-edge technology solutions empower businesses to thrive in the digital era. Elevate your business with Desun Technology...
Top Services:
- Web Development
- Digital Services
- Branding
- eCommerce Development
- Mobile App Development
- Show more
- Location
- Kolkata, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $15/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDesun Technology Pvt. Ltd. Services
Data sourced from the agency's DesignRush profileAryabhatt Polytechnic Bengal Law College Castle Realty Zone
Desun Technology Pvt. Ltd. Reviews & Testimonials
Web Development Review from Akhil Ahire
The Desun Technology team is a true partnership. They take the time to understand the business requirements behind our specifications in order to solve/build solutions that best fit our needs. The team is great with communication and proactively checking in with us. The development team is great - open to constructive feedback - and dedicated to quickly releasing new elements of our application.
Web Development Review from Akhil Ahire
The Desun Technology team is a true partnership. They take the time to understand the business requirements behind our specifications in order to solve/build solutions that best fit our needs. The team is great with communication and proactively checking in with us. The development team is great - open to constructive feedback - and dedicated to quickly releasing new elements of our application.
Mobile App Development Review from Brittany Melanson
The team at Desun Technology including my amazing project/product manager went above and beyond and exceeded all expectations from start to finish. I could not speak more highly of them!! They have proven to be dedicated, passionate, highly skilled and very knowledgeable so my experience to date has been nothing short of fantastic! A special thanks to their (Project/Product Manager) and the design/development team for making my project a great success!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWisdom In Motion
Pendoah helps North American SMBs turn AI strategy into production systems that pass audits. We deliver secure data foundations, reliable models, and MLOps with compliance and ROI proven in real deployments...
Top Services:
- AI Development
- Software Testing
- Staff Augmentation
- Software Development
- Show more
- Location
- Houston, Texas
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $110/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPendoah Services
Data sourced from the agency's DesignRush profileProVal AI Lymelyt Xiber
Pendoah Reviews & Testimonials
Bill West's Review Sourced from Google
Sarosh and his team were top notch. I can't say enough about their thorough nature and attention to detail with my project. It really fetl like having an in house development team on my side rather than an outside hire. This team not only did what was asked but continually went above and beyond to make sure that my vision was realized. I would hire them again, without hesitation!
Nathan Gould's Review Sourced from Google
I have been working with Pendoah for AI staff augmentation since December 2025, and the experience has been excellent. Their team integrated quickly with our workflow and delivered high-quality work from day one. Communication has been smooth, and they’re very responsive whenever we need support. Highly recommend them if you're looking for reliable AI talent.
Ethan Michaelson's Review Sourced from Google
Pendoah delivered outstanding results, merging deep industry insight with technical expertise to develop a custom AI platform that exceeded our operational and revenue goals. Their management was flawless, communication transparent, and partnership truly collaborative.Highly recommend.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsBusiness software with AI inside, built in Houston since 2004.
Espresso Moon is a Houston custom software company that builds AI-enabled business applications, mobile apps, and cloud platforms for B2B clients, and hosts and supports everything it delivers. We also own and operate GageList, a calibration management SaaS with AI built into the product...
Top Services:
- AI Development
- Software Development
- Mobile App Development
- Software Testing
- UI/UX Design
- Show more
- Location
- Spring, Texas
- Number of Employees
- Under 49
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsEspresso Moon Services
Data sourced from the agency's DesignRush profileDistributionNOW Tesla Nucor Steel Everest Funeral Concierge Flexitallic Solvay Dental Stream Realty Wilson Perumal Neuhaus Academy SafeFleet
Espresso Moon Reviews & Testimonials
Bradley Collins's Review Sourced from Google
Working with the guys at Espresso Moon (Scott, Doug, Tim and Dwayne) was truly a great collaboration and experience. They didn't just throw a website together for us, they helped us to reinvent ourselves. They go out of their way to get to know you and your business to the fullest extent, and that is a quality that is not often seen. If I were to recommend a web design/hosting company to anyone, Espresso Moon would be the one and only name I give. Thank you for your service and support!
Meredyth Jones's Review Sourced from Google
I worked primarily with Scott, Tim and Doug to build a fairly complicated site: Paypal/credit card payments, video training modules, a graded quiz, and issuance of a completion certificate. They were the only website company that invited me to an in-person meeting and that was tremendously helpful in me understanding how they work and them understanding my goals. Large Animal Consulting & Education launched 2 days ago and the site is running smoothly. I'm very happy with the site they designed (they also designed my logos) and am looking forward to using them to support and add to the site down the road.
Caleb Schallert's Review Sourced from Google
Doug Wheeler is the owner of Espresso Moon and he has provided my small business excellent IT technical support for our website. His team helped me out by removing malicious code that was affecting my site right after the Heart Bleed epidemic last year. He got my site back up and running so i could continue business and save my online reputation. I would recommend Espresso Moon LLC to anyone in need of a new website or mobile application because they follow through with what they promise to do, on time and on budget. They are truly a pleasure to work with!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWeb, Mobile and IoT solutions. Made easy.
We are CimpleO, an award-winning production studio that delivers on time and budget. Since 2012.We develop custom software, complex web services, desktop applications, client-server systems, elegant web, and mobile apps as well as IoT solutions that are made to scale...
Top Services:
- eCommerce Development
- Web Development
- Web Design
- IoT
- Software Development
- Show more
- Location
- Phuket, Thailand
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCimpleO Services
Data sourced from the agency's DesignRush profileRedsqware HP Century21 W1 Shout Factory CEIC JOC IHS POD10
Talk Think Do is a UK-based custom software development company, founded in 2014, building bespoke cloud-native applications for organisations where failure isn't an option. The team specialises in custom software development, AI implementation, legacy modernisation, API integration, DevOps, and managed...
Top Services:
- Software Development
- Mobile App Development
- AI Development
- Managed Services
- Cloud Consulting
- Show more
- Location
- Bournemouth, United Kingdom
- Number of Employees
- Under 49
- Average Hourly Rate
- $108/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsTalk Think Do Services
Data sourced from the agency's DesignRush profileThird Space Livestock Information Government Commercial Agency Caledonian MacBrayne Ferries Department for Education Explore Learning Hodder Education
Values by Convergence
We are an AI Consulting and Digital Transformation company that follows a collaborative and data-driven approach to deliver high-quality technology solutions for global enterprises...
Top Services:
- Web Design
- Mobile App Development
- Software Development
- Product Design
- Graphic Design
- Show more
- Location
- Gurgaon, India
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAntino Labs Services
Data sourced from the agency's DesignRush profileOntic Rapido Hyderabad Metro Rail Krishify Hoppy
Antino Labs Reviews & Testimonials
sudeep kotari's Review Sourced from Google
Recently I cleared all the interview rounds in this company, unfortunately due to some personal reason didn't join. 2 technical round was very good, interviewers and HR Minnu was very friendly and nice. Definitely 5 star for treating employees and aspirants.
Jitendra Gupta's Review Sourced from Google
Antino labs's development is handled by experience developers. This gives best services to the client.This complets milestone before the time. I will say that it is satisfactory organization
Prakhar Pandey's Review Sourced from Google
I am working here as an android developer. In a small time I got a great exposure. For the freshesr who want to enhance our skills to next level then Antino Labs is a right organization.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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