Best .Net Development Companies in the California | 2022

The .Net Development cross-platform development environment is one of the best for building IoT apps and real-time web apps. Utilize this list to hire the Best .Net Development Companies in California.
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4.9 out of 5, based on 316 real reviews.
Rankings updated: May 17, 2026

Certain agencies may be featured through sponsored placements. Rankings and SF Scores remain unbiased and are based solely on our evaluation methodology.

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IM Republic, Inc

IM Republic, Inc

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SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

2

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)

  • 20% Software Development

  • 20% Mobile App Development

  • 20% Web Development

  • 10% Ecommerce Development

  • 10% Web Design

  • 10% Digital Marketing

  • 10% AI Development

Form Follows Function

IMRepublic, founded in 2005 with offices in San Francisco, CA, and Belgrade, Serbia, is a full-stack software development and design agency delivering tailored digital solutions for businesses of all sizes. We specialize in custom software development, enterprise systems, and process optimization to help clients achieve measurable growth. Our client-focused approach combines assessment, design, development, and optimization. We collaborate closely with your team to align technology solutions with business goals, leveraging the latest globally-adopted frameworks and languages while respecting your existing infrastructure. From backend, frontend, and middleware development to complex enterprise integrations, our experienced team advises on the most efficient technology stack to maximize ROI. Whether you need custom software to solve unique business challenges or enhancements to existing systems, IMRepublic provides agile, reliable, and scalable solutions that drive results and streamline operations. We are committed to client success, delivering innovative, high-quality software that boosts performance and revenue.

View IM Republic, Inc Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$5,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

San Francisco, USA

Location
Native DevOps

Native DevOps

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SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

2

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)

  • 20% Software Development

  • 20% Ecommerce Development

  • 20% Mobile App Development

  • 10% Web Development

  • 10% Web Design

  • 10% AI Development

  • 10% CMS

Unleash Agility: Your Trusted Partner for Outsourcing

Native DevOps is a global digital transformation partner delivering advanced software development, mobile applications, and scalable web solutions. With 7+ years of experience and over 250 successful projects, we help startups, SMEs, and enterprises modernize operations and accelerate digital growth. Our expertise spans UI/UX design, custom software development, and full-stack engineering using modern technologies like React, Angular, Vue.js, Node.js, and Golang. We build high-performance mobile apps for iOS and Android using Swift, Kotlin, and cross-platform frameworks such as Flutter and React Native. We also specialize in web and CMS development (PHP, Laravel), Progressive Web Apps (PWA), and next-gen solutions including Web3, blockchain, and NFT platforms. Our eCommerce capabilities cover Shopify, WooCommerce, and Shopware, delivering conversion-focused online stores. In addition, we offer flexible staff augmentation models to scale your development team efficiently. Partner with Native DevOps to leverage innovative, secure, and future-ready digital solutions that drive efficiency, enhance user experience, and deliver measurable business results.

View Native DevOps Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$5,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Los Angeles, USA

Location
4 Way Technologies

4 Way Technologies

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SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

2

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)

  • 20% Software Development

  • 20% Mobile App Development

  • 20% Web Development

  • 20% Web Design

  • 10% Cloud Computing Services

  • 10% CMS

Custom Software and Product Development Company

4 Way Technologies is a premium IT services company specializing in business-critical web, mobile, and Smart TV application development, with offices in the USA, Australia, and India and a team of 100+ developers. Born cloud-native and operating in a fully Agile delivery model, 4 Way Technologies is an early adopter of OTT and live streaming platforms—making them a trusted development partner for major media companies. Their open-source technology stack (Java, JavaScript, Node.js, Angular, AWS) combined with OWASP-certified security practices ensures every application is built for performance, scalability, and enterprise-grade security. With transparent project management via JIRA and Trello, 4 Way Technologies delivers offshore software development with full visibility and zero compromise on quality.

View 4 Way Technologies Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

Fremont, USA

Location
LANEX Corporation

LANEX Corporation

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2

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

2

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
info
Expertise Distribution (%)

  • 20% Software Development

  • 20% Mobile App Development

  • 20% Web Development

  • 20% Web Design

  • 10% AI Development

  • 10% Cloud Computing Services

Business solutions, tailor-made.

LANEX Corporation is a full-cycle software development company delivering custom digital products for startups and global enterprises. With deep expertise across Node.js, React, Angular, Laravel, .NET, Java, Flutter, Kotlin, and cloud platforms including AWS and Kubernetes, LANEX builds scalable, secure solutions tailored to each client's technology requirements and business objectives. Serving industries from banking and healthcare to retail, logistics, and energy, their agile teams bring domain-specific knowledge that accelerates delivery and reduces risk. LANEX's end-to-end offering—from UI/UX design through to post-launch support—ensures digital products are not only technically sound but built to elevate brand credibility and deliver exceptional user experiences at scale.

View LANEX Corporation Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

San Francisco, USA

Location
App Design Company

App Design Company

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1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
info
Expertise Distribution (%)

  • 10% Software Development

  • 20% Ecommerce Development

  • 20% Mobile App Development

  • 20% Web Development

  • 10% Web Design

  • 10% AI Development

  • 10% CMS

Amazing design creates incredible experiences

Guided by strong business ethics and customer-focused values, we deliver custom software and digital solutions tailored to each client’s technical and budget requirements. Instead of offering one-size-fits-all services, we focus on creating practical, scalable solutions that improve efficiency, support business goals, and maximize return on investment (ROI) for our clients.

View App Design Company Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$10,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Carlsbad, USA

Location
SDI - Software Developers Inc

SDI - Software Developers Inc

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1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
info
Expertise Distribution (%)

  • 10% Software Development

  • 20% Ecommerce Development

  • 20% Mobile App Development

  • 20% Web Development

  • 10% Web Design

  • 10% AI Development

  • 10% Product Engineering services

Let's build awesome

SDI is a global software development company delivering innovative digital solutions to businesses for over 20 years. We specialize in custom software development, mobile app development, web design and development, and digital marketing services, helping organizations transform ideas into scalable digital products. Our team of 200+ certified professionals and 30+ UI/UX experts collaborates closely with clients to create tailored solutions that align with their business goals. With offices in California, Melbourne, and multiple locations in India, SDI has served 5,000+ clients worldwide and successfully delivered 2,000+ applications across industries including finance, education, healthcare, enterprise, social networking, and startups. Trusted by brands such as Pepsi, Stanford University, and Marvell, we focus on building high-performance applications, responsive websites, and growth-driven digital strategies that help businesses innovate, scale, and compete in today’s digital landscape.

View SDI - Software Developers Inc Profile
Inside Service Listing

< $25/hr

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

Saratoga, USA

Location
Ordex Technology Solution Inc

Ordex Technology Solution Inc

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1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)

  • 10% Software Development

  • 10% Ecommerce Development

  • 10% Mobile App Development

  • 10% Web Development

  • 10% Blockchain Development

  • 10% Internet of Things

  • 10% AI Development

  • 10% Cloud Computing Services

  • 10% CMS

  • 5% Digital Marketing

  • 5% IT Services

Plan Driven. Be ready for tomorrow's business world, today.

Founded in 2014, Ordex Technology Solutions (OTS) is a trusted software development company delivering high-quality, customized IT solutions for businesses worldwide. We specialize in custom software development, eCommerce websites, mobile app development (Android & iOS), and seamless integrations such as QuickBooks and marketplace automation. Our team provides end-to-end services—from requirement analysis and solution design to development, deployment, and ongoing support. We help businesses maximize IT value, streamline operations, and adapt to evolving market demands. With a strong focus on innovation, quality, and client satisfaction, OTS delivers scalable, secure, and performance-driven solutions that empower organizations to achieve sustainable growth and long-term success.

View Ordex Technology Solution Inc Profile
Inside Service Listing

< $25/hr

Hourly Rate
Inside Service Listing

$5,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

Cerritos, USA

Location
Kwanso LLC

Kwanso LLC

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1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)

  • 10% Software Development

  • 20% Mobile App Development

  • 10% Ecommerce Development

  • 10% Web Development

  • 10% Web Design

  • 10% IT Services

  • 10% Internet of Things

  • 10% AI Development

  • 10% Cloud Computing Services

An AI Agent Engineering Company

Kwanso is a leading design and development consultancy specializing in bringing product visions to life. With over a decade of experience, we have successfully partnered with Fortune 100 companies, startups, digital agencies, and mid-sized enterprises. Acting as a trusted technology partner, we provide agile, high-performing teams to deliver projects on time and within budget. Our expertise spans web and mobile app development, UI/UX design, generative AI solutions for enterprises, Internet of Things (IoT) applications, and comprehensive QA testing. Kwanso empowers businesses to innovate, scale efficiently, and create impactful digital products that drive measurable results.

View Kwanso LLC Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

San Francisco, USA

Location
Asapp Studio

Asapp Studio

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1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

1

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)

  • 10% Software Development

  • 10% Ecommerce Development

  • 10% Mobile App Development

  • 10% Web Development

  • 10% Web Design

  • 10% IT Services

  • 10% Blockchain Development

  • 10% Internet of Things

  • 10% AI Development

  • 10% Business Services

Where AI transforms ideas into intelligent, future-ready experiences

Asapp Studio is a digital product development company focused on creating engaging, user-centric applications that turn users into loyal customers. We specialize in building high-performance mobile apps (iOS and Android), web applications, and desktop solutions designed to deliver exceptional user experiences and measurable business results. Our approach combines UX/UI design expertise with strong engineering practices to craft intuitive, visually appealing, and scalable products. We go beyond functionality—focusing on user behavior, seamless interactions, and brand alignment to ensure your product stands out in competitive digital markets. From idea validation and product strategy to design, development, and launch, Asapp Studio provides end-to-end services tailored to your goals. We work closely with clients to understand their vision and translate it into impactful digital solutions that drive engagement and retention. With a commitment to quality, innovation, and collaboration, Asapp Studio acts as a true technology partner—helping businesses build memorable digital experiences that strengthen brand identity and support long-term growth.

View Asapp Studio Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$5,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Temecula, USA

Location
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