Our analysts identified the top outsourcing software development companies in California providing cutting-edge services that answer key business problems, from building technical software, designing websites or mobile apps to integrating operating systems and more. Narrow down your search by team size, budget, reviews and more to select the best developer for your company’s needs.
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.
HIGH QUALITY SOFTWARE COMPANY IN VIETNAM
With over 10 years of expertise, AgileTech Vietnam stands at the forefront of delivering innovative technology solutions across a wide range of industries. Our team of 300+ skilled developers has completed more than 1,000 successful projects, ranging from dynamic startups to large-scale enterprises...
Top Services:
- Web Development
- WordPress Website Design
- UI/UX Design
- eCommerce Development
- Web Design
- Show more
- Location
- Irvine, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 50 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAgileTech Services
Data sourced from the agency's DesignRush profileClingme Luxstay Lian Ferosh Alosong Stardary Tizo Jupviec
AgileTech Reviews & Testimonials

Mobile App Development Review from Noah Petraitis
AgileTech excelled in supporting our project from initial mock-ups through to the final delivery on the App Store, incorporating data analytics that we could easily share with our customers. The scope of work included mock-up creation, UI/UX design, interactive prototyping, app development, rigorous testing, and setting up a secure production environment on AWS, culminating in the apps release on both iOS and Android platforms.

Software Development Review from Selva Jayaraman
Working with AgileTech has been an amazing experience, especially when it comes to creating a personalized e-learning program for our IT services business. We were pleasantly surprised by how adaptable and scalable the platform developed by the AgileTech Team was. Their proficiency with user-friendly course administration and community participation technologies enabled us to provide a thorough instructional resource catered to our customers' particular requirements. The platform has greatly improved our operational efficiency, and we are amazed by its capacity to manage heavy traffic with ease and offer comprehensive reporting and analytics. The platform remained successful and user-friendly because of the team's dedication to continuous support and their quick response to criticism. For any organization looking to create innovative and reliable digital solutions, we wholeheartedly recommend AgileTech as a partner.

Software Development Review from Preci Capiral
AgileTech provided a superb Learning Management System (LMS) that creatively and precisely addressed the intricate needs of our organization. Within a scalable, completely customizable platform, the LMS made it possible to create comprehensive courses, administer student tests, engage the community, and obtain real-time data insights. AgileTech's modular and agile approach made sure that every component, from the user-friendly course builder to the sophisticated analytics and communication tools, was customized to meet our demands despite the difficulties of developing such a feature-rich system. In order to guarantee perfect scalability and zero downtime, even with high user concurrency, AgileTech used a potent tech stack that included PHP, React, and AWS. Their post-launch assistance, which included frequent training sessions and upgrades, gave our staff the means to fully use the LMS's potential. This project was a testament to AgileTech's technical skill, rapid deployment, and dedication, making them an outstanding choice for educational technology development.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsProduct Teams On Demand
Right Tail provides a high-performance Product Software Development and IT Staff Augmentation team built for speed, precision, and outcomes. We partner with startups, scale-ups, and enterprise technology companies to design, build, and scale world-class digital products...
Top Services:
- Staff Augmentation
- Software Development
- Mobile App Development
- AI Development
- Blockchain
- Show more
- Location
- San Francisco, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 14 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsRight Tail Services
Data sourced from the agency's DesignRush profileChia Permuto Capital Albin AI Pent AI Saudi Aramco
Right Tail Reviews & Testimonials

Software Development Review from Mansoor Khan
I am very impressed with the software development services provided by this company. Their team is technically proficient and delivered a high-quality, scalable product that met all our requirements. The code is clean, and the final result exceeded our expectations. Highly recommended for any complex development needs.

Web Design Review from John Fitzpatrick
Right Tail delivered a professional and visually appealing website that aligned perfectly with our brand and business goals. Their team focused on modern design, responsive layouts, and smooth user navigation. Communication throughout the project was clear, and they remained responsive to feedback. The final website performs well across both desktop and mobile devices. Overall, Right Tail provided a reliable and high-quality web design experience.

Software Testing Review from Gohar Asadullah
Right Tail Corp built internal software development tools to automate our enterprise operations, and the experience was outstanding. Their team delivered efficient, well-structured solutions that significantly streamlined our processes. The quality of work, communication, and professionalism throughout the project was exceptional. Highly recommended for any company looking for reliable development partners.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsAi fist design & development company
ZAAG SYSTEMS delivers scalable web, mobile & AI solutions with sleek design, driving business growth for US startups...
Top Services:
- eCommerce Development
- AI Development
- Web Development
- Software Development
- Web Design
- Show more
- Location
- Santa Clara, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 17 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsZAAG SYSTEMS Services
Data sourced from the agency's DesignRush profileGoldenmark (USA) New York City Pest control elimination (USA) Ascend Technology Inc. (USA) Inten-Ls (USA) Mustafiz Foundation (USA) Shore Teams (Neatherland) Mangtas (Singapore) CROSSMARKET (Germany) Eigenart E.k (Germany) KADAD (Quatar)
ZAAG SYSTEMS Reviews & Testimonials

Mobile App Development Review from Dr.Laine Powell
We hired ZAAG System Ltd to achieve several objectives, primarily to develop a cutting-edge mobile app for Tech Sassy Girlz. Our goals included enhancing user engagement, streamlining processes, and ultimately expanding our digital presence. ZAAG System Ltd demonstrated exceptional expertise in understanding our requirements and translating them into a comprehensive scope of work. Within just a week of project initiation, ZAAG System Ltd showcased tangible results, including increased user engagement metrics, such as longer session durations and higher retention rates. They consistently delivered milestones on time, adhering to the agreed-upon timeline without compromising on quality. Their team displayed a remarkable blend of technical proficiency, creativity, and dedication, resulting in a mobile app that exceeded our expectations. Overall, ZAAG System Ltd proved to be an invaluable partner in our journey to revolutionize digital education for young women. We wholeheartedly recommend ZAAG System Ltd to any organization seeking top-notch mobile app development services.

eCommerce Development Review from Robb Fahrion
We were creating a product in the advertising technology environment. It was a product for publishers to improve their revenue by making a dynamic inventory on their side and getting more income out of their advertising. We needed help with the recruitment of an outsourced, part-time frontend developer with broad experience and availability.

Web Design Review from Isabella Susan
From start to finish, our team at Zaag Systems Ltd., led by Tony, Don, and Mike, was a pleasure to work with. Their approach to web design and development is both collaborative and consultative. They took the time to understand our business needs and goals and provided expert guidance on the best strategies.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsLet Us Solve Your Outsourcing Software Needs
Solvd, Inc. is a renowned outsourcing solutions and engineering company specializing in Mobile, Web, and Quality Assurance solutions. With a global presence and a team of over 230 professionals, we serve VC-backed startups, tech companies, and enterprises across various industries. Our flexible approach...
Top Services:
- Mobile App Development
- Software Development
- Web Design
- UI/UX Design
- Web Development
- Show more
- Location
- Roseville, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $40/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 accountsSolvd Services
Data sourced from the agency's DesignRush profileNerwallet Famous Fitbod Edcast EllieMae
Solvd Reviews & Testimonials
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Software Testing Review from Marina Ryzhikova
According to Marina Ryzhikova of NerdWallet, Solvd is the most well-rounded service provider she has encountered. Solvd's experience and tools sped up NerdWallet's processes and allowed the partnership to hit the ground running. Ryzhikova commends the agency's skilled project management, which had all the necessary resources. (Source: 3rd Party Review Platform)
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Web Development Review from James Minor
James Minor of Acelab commends Solvd's services in delivering an MVP within deadline and budget. As a result, the company was able to work on its portal upload and build a sizable database for its projects. (Source: 3rd Party Review Platform)
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Software Testing Review from Mikita Cherkasau
Mikita Cherkasau of Your Extra Marketer is impressed with Solvd's commitment to innovation and customer satisfaction. Thanks to the agency's reports and recommendations, the client experienced a significant improvement on its website. The agency communicated via email, text messages, and Google Meet. Cherkasau highlights the agency's meticulously managed workflow from start to finish. (Source: 3rd Party Review Platform)
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTechnology, Innovation, Inspiration
Mob Inspire is a software development company carrying an ambition to improve software standards used in various industries. Our solutions assist startups to attain stability and enable businesses to eliminate vulnerabilities in their tech infrastructure...
Top Services:
- Software Development
- Wearables
- IoT
- Mobile App Development
- VR/AR
- Show more
- Location
- Palo Alto, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/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 accountsMob Inspire Services
Data sourced from the agency's DesignRush profileAlianza Taxi alBaraka GoWey Allo Services Caddytop Town Around Trail Connect
Mob Inspire Reviews & Testimonials

Mobile App Development Review from David Watts
Mob inspire completed the project on time and within budget. The team utilized monday.com to manage tasks and enable the client to oversee progress. Moreover, Mobinspire's experience and strong sense of teamwork played vital roles in ensuring a successful outcome.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsBuilding Tomorrow, Together
Through 12 years of experience, we take pride in developing amazing software applications used by millions of people around the world...
Top Services:
- Web Design
- eCommerce Development
- WordPress Website Design
- Software Development
- Staff Augmentation
- Show more
- Location
- Chula Vista, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $49/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 accountsRivka Development Services
Data sourced from the agency's DesignRush profileDovetail Workwear RateSpot The Moss Agency Clarifee Glow Gifts Smileplan Ford and Wyatt Mitek Quoin Design Latinas in Tech

Femtomax Inc.
VerifiedVerified by the DesignRush team for authenticity and credibility.Technology Solutions for You.
Access information technology professionals with experience of working with startups to Fortune 500 companies without breaking the bank. Our services are well suited for retail, manufacturing, startups and healthcare businesses. Talk to us for a free consultation...
Top Services:
- Web Development
- Mobile App Development
- Software Development
- IoT
- AI Development
- Show more
- Location
- San Jose, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 9 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsFemtomax Inc. Services
Data sourced from the agency's DesignRush profileCeeyes Mobility Solutions Pvt. Ltd. Pioneer Property Zone Idaax Technologies Pvt. Ltd.
Driving the Digital World Forward
Metamins specializes in creating high-loaded web solutions, mobile applications, and IoT technologies. As a preferred partner for innovation-oriented companies, we provide best-in-class R&D services, extending our clients' reach to millions of users worldwide...
Top Services:
- Wearables
- Software Development
- IoT
- Mobile App Development
- UI/UX Design
- Show more
- Location
- Burlingame, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsMetamins Services
Data sourced from the agency's DesignRush profileNielsen BBDO Mazda Samsung
Resolving Security, Computer and Network Issues 24-7
Single Point of Contact is a Managed Security Service Provider managing and resolving our clients network and security issues. We provide a 24-7 help desk and Servie Level Agreements guaranteeing we will begin resolution within a specified time...
Top Services:
- Cybersecurity
- IT Services
- Managed Services
- Software Development
- VR/AR
- Show more
- Location
- Palo Alto, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSingle Point of Contact Services
Data sourced from the agency's DesignRush profileKagomeUSA Google Apple The Withum Group Shorenstein Realty Services
Single Point of Contact Reviews & Testimonials
Merwin Bachiller's Review Sourced from Google
I am deeply disappointed with my experience with Single Point of Contact (SPOC). Despite being awarded in unpaid wages by the California Labor Commissioner, SPOC and its leadership have failed to take any responsibility or make good on the judgment.In an effort to resolve the matter amicably and avoid further legal complications, I offered a settlement for just nearly 75% less than what I was legally owed. I was genuinely hoping for a fair resolution and gave every opportunity for SPOC to make things right.Unfortunately, even this generous offer was ignored. Their refusal to own up to their obligations reflects a serious lack of accountability and professionalism. Employees and contractors should be aware of how this company handles financial and legal responsibilities.If you're considering working with or for SPOC, I strongly encourage you to exercise caution and do your due diligence
Channing Thomas's Review Sourced from Google
I've had them as a vendor for my business as well working with them on many jobs. They offer great support from a pool of talented techs and if something goes wrong they go above and behind to resolve the issue. Their NOC was also English speaking, US Based and top notch which is something that you don't find often in companies.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsAI-First Engineering | Agentic AI | Product Engineering | Enterprise Software | Digital Transformati
Appventurez is a global AI and digital transformation company specializing in custom software, mobile app, web, and enterprise application development. We build scalable technology solutions that help businesses innovate, automate, and grow...
Top Services:
- Mobile App Development
- Web Development
- Software Development
- VR/AR
- eCommerce Development
- Show more
- Location
- San Jose, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 8 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAppventurez Mobitech Services
Data sourced from the agency's DesignRush profileHOLCIM Ever Friends AI ENUNCIA.AI Digishayak Tattoo Planet Electronica Finance Limited (EFL) Ezipay Melto Zoës Kitchen Adviceme
Appventurez Mobitech Reviews & Testimonials

WordPress Website Design Review from Martin Larsen
Appventurez Mobitech is developing a customizable dashboard that allows users to track and manage shipments. They create backend panels and implement UI / UX designs provided by internal stakeholders.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsGrow with Technology.
We have a Team of 100+ Skilled App Developers who thrive on rolling up their sleeves and solving your IT problems and meeting your business needs like APP Development, Software Development, Cloud Consulting, Generative AI Development, Cyber Security Services, Custom ERP Software Development, and Web...
Top Services:
- AI Development
- Mobile App Development
- Software Development
- Blockchain
- Software Testing
- Show more
- Location
- Irvine, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsNextOlive Services
Data sourced from the agency's DesignRush profileTrulyMadly theDevMasters OpusClip DP World Bettor In Green
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