Best Software Development Agencies in San Francisco

Searching for the best software development agencies in San Francisco? Read on for a curated list of the top agencies that guarantee great results!

San Francisco, alongside Oakland, San Jose, and Silicon Valley, fuels tech innovation with its dynamic ecosystem of startups and world-class talent.

But for most startups, that doesn't make finding the perfect software development agency any easier.

That's why we decided to compile this list of the best software development agencies in San Francisco, California.

We'll take a look at their industry specialties, services, and why they could be the perfect match for your business.

Let's get started.

Tips When Searching for a Software Development Agency in San Francisco

Before we start evaluating agencies, here are a few tips to ensure you find the best-fit software development agency for your business:

• Always check their portfolio. Proven software development agencies will see to it that their portfolio of previous projects is easily visible to prospects. This is, in most cases, the best way to tell if an agency is capable of delivering good results or not.
• Don't ignore cultural fit. Book a consultation and conduct a firsthand observation of the company's communication style and work culture. Ask about their team dynamics and processes, prioritizing factors like DevOps methodologies, clear communication, and always-on collaboration.
• Look for past client references. Previous clients who experienced working with an agency can reveal things that people from the agency itself can't (or won't). You can ask the agency directly for references, or you could look at their portfolio or website testimonials for potential contacts.
• Get your engineering team involved. Your CTO and in-house engineers should be able to provide valuable insights grounded in your company's specific software needs. If necessary, don't hesitate to work with a technical consultant who can sharpen your decision-making process.

Here's a bonus tip: Look for agencies that are proud to let their work speak for itself.

At Horizon Labs, we do this by inviting prospects to request a small demo project. You dictate the specifications and we'll deliver the prototype to you — 100% free of charge.

Let's talk about your demo project here.

Best Software Development Agencies in San Francisco (2025)

Without further ado, here are the top SF-based software development agencies you can count on:

1. Horizon Labs

Industry Expertise: Ecommerce, embedded systems, healthtech, fintech, and AI

Founder(s): Sinan Sari

Built by a Y Combinator alumnus and ex-VC, Horizon Labs lives by three software development principles that any business would be on board with: speed, performance, and cost-effectiveness.

Our team's decades of collective experience not only ensure high-quality software products delivered fast. As startup founders ourselves, we also know what it takes to create products that not only captivate users but also boost your bottom line.

More importantly, our services can come in regardless of where you are in your software journey. We can help you through product design, prototyping, MVP building, staff augmentation, ongoing optimization, and everything in between.

Put us to the test by requesting a small trial project here.

2. Yellow Systems

Industry Expertise: Fintech, ecommerce, logistics, media, healthcare, and AI

Founder(s): Mitya Smusin

Yellow Systems is a software development agency that specializes in clean, creative, and intuitive product designs. They offer an impressive lineup of services, including AI development, website creation, DevOps, QA testing, and MVP building.

While they're capable of delivering in practically any niche, Yellow Systems excels with software projects in the fintech space. This includes trading platforms, banking software, billing solutions, and more.

Here's a tip: Check out the Yellow Systems portfolio to find projects similar to the software you envision. While their team is exceptionally skilled in fintech products, their clean and functional design language remains consistent even in other industries like recruitment, e-learning, and even integrated spell-checkers.

3. Mayven Studios

Industry Expertise: Fintech, data analytics, ecommerce, and healthtech

Founder(s): Connor Hood and Nate McGuire

Mayven Studios is a software development and design agency that aims to be a one-stop shop for any company's product engineering needs. They follow a tried-and-tested approach that begins with an intense client discovery phase, followed by defining the project's scope and kicking off development.

For startups and small businesses looking for end-to-end software development, Mayven Studios should definitely be among their top choices. Their services include software design, custom development, mobile app development, website creation, and digital campaigns.

4. Azumo

Industry Expertise: AI, cloud tech, website development, ecommerce, education, fintech, telemedicine, and gaming

Founder(s): Chike Agbai

Azumo offers a range of software development services like custom AI implementations, website development, mobile app development, data engineering, and game development with Unity or Unreal Engine 5.

When working with Azumo, companies have the option of outsourcing nearshore software developers, hiring a dedicated team, or paying for a fully-managed software project. The choice, of course, depends on the client's available resources, software needs, and budget.

As for their industry focus, Azumo has a long working history with businesses in ecommerce, healthcare, fintech, retail, telemedicine, manufacturing, and entertainment.

If you're not in the market for a software development agency at the moment, you're welcome to try Azumo's AI-powered tools:

• CharliBot — A chatbot tool that streamlines the process of building and integrating a live AI assistant into your product.
• AI Schema Generator — A straightforward, free-to-use schema markup generator for Search Engine Optimization (SEO).
• AI Software Spec Writer — Use generative AI to quickly create a clear Software Requirements Specification (SRS) for new development projects.

5. Proleadsoft

Industry Expertise: Healthcare, ecommerce, food & beverages, government, and fintech

Founder(s): Imran Alavi

Proleadsoft is a full-service digital agency that offers website creation, mobile app development, and custom software development to businesses in San Francisco.

The agency's key value proposition is great business value — offering speedy delivery and performance-driven quality. This makes them an attractive choice for startups and small businesses looking to penetrate the digital space.

Aside from their core services, Proleadsoft also provides cloud migration assistance, business intelligence solutions, and digital marketing management. It is, however, worth noting that the bulk of their experience working with companies in various industries involves website development and marketing.

6. Vinta Software

Industry Expertise: Healthcare, food, education, retail, AI, and fintech

Founder(s): Felipe Farias, Flávio Juvenal, and Filipe Ximenes

Vinta Software started in 2013 with a small group of visionary developers, specializing in small projects before expanding overseas — building MVPs for international businesses.

Fast forward to 2025, the agency now lends its expertise in popular tech stacks to help businesses in healthtech, fintech, retail, education, and AI. This includes backend platforms like Python, Django, and Node.js, along with monitoring solutions like DataDog, Sentry, and Kibana.

The Vinta Software team is also a proud contributor to the open-source software development community, dedicating their time to participating in speaking engagements, contributing to over 160 repos, and publishing over 80 articles. You'd love to see this kind of passion from the agency in charge of bringing your product ideas to life.

7. Empat

Industry Expertise: Healthcare, fintech, education, ecommerce, and custom app development

Founder(s): Nazar Gulyk

Empat is a large, international software development agency with an impressive portfolio of over 300 projects. They help businesses with SaaS development, website creation, staff augmentation, product validation, custom mobile app development, and more.

Startups can also take advantage of Empat's early-stage development services, including CTO as a service, MVP building, and product strategy.

While Empat's portfolio covers 23 different industries, they're especially noteworthy in the healthcare, education, and fintech spaces. They also take on a number of volunteer projects in support of worldwide causes and charities.

Honorable Mentions

Want to look at more prospective software development agencies in or near San Francisco?

Here are a few more agencies you can look up:

• Kingsmen Digital Ventures — Product engineers who can deliver top-quality software development, strategy, and design fast.
• Diffco — Tap into AI-enhanced automation to accelerate software development (including frontend, backend, web, and mobile).
• Tri-Valley Solutions — CA-based digital marketing and AI automation services for startups and small businesses.

Final Words

The importance of choosing the right software development agency for your business cannot be understated.

With so much on the line, most early-stage startups take several weeks to a couple of months to find the perfect fit.

Hopefully, we helped you shave off a few weeks of research time with the list above. Just remember that the best way to evaluate an agency's capabilities is to see them in action — ideally free of charge.

Click here to get in touch with us and request a free demo project. Just tell us what you need and let our work do the talking!