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Top Custom Software Development Companies in the USA

27 of 118 IT service providers ranked on evidence in the Q4 2026 edition.

Between them, the 118 IT service providers on this page cover web development (107), web design (95), software development (81) and mobile app development (69). They also list work in California, Washington, Oregon and Georgia. 113 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

27 of 118 IT service providers ranked on evidence held on 6 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

How this is ranked About this edition

All IT service providers 27 ranked SMEs 24 ranked

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SoluLab INC
Mobile App Development · Web Development · Web Design
SoluLab INC is a US-based technology company working in artificial intelligence, blockchain and digital transformation.
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Why #1: Based in United States · Founded 2014 · ISO 9001, SOC 2, professional accreditation, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Agile Infoways
Mobile App Development · Web Development · Web Design
Agile Infoways is a software engineering firm that has operated since 2006.
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Why #2: Address in United States of America · Founded 2006 · ISO 9001, SOC 2 · Team of 250+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Tekshapers Software Solution
Mobile App Development · Web Development · Android · Also in Michigan
Tekshapers Software Solution is an IT company that sells software development, workforce services and its own business software.
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Why #3: Based in Michigan, USA · Founded 2009 · professional accreditation, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Billennium
Software Development · E-Commerce Development · CRM Development · Also in Poland
Billennium is an IT services company from Poland, with branches there and offices in India, the United States and Malaysia.
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Why #4: Based in Poland, with offices in Pune, New York and Kuala Lumpur · In business 20+ years · Team of 1,000+, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
ServerLogic
Web Development · IT Outsourcing · PHP · Also in Oregon
ServerLogic is an IT services company in Portland, Oregon, serving businesses since 1992. It combines managed IT support with consulting, software development and staffing.
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Why #5: Based in Portland, Oregon · Founded 1992, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Caxy Interactive
Web Development · Web Design · Software Development
Caxy Interactive is a Chicago software firm that says it has operated for about 25 years.
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Why #6: Based in Chicago, Illinois · In business 25+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Techliance
Mobile App Development · Web Development · Web Design
Techliance has provided IT solutions to businesses of all sizes since 2002.
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Why #7: Based in Salt Lake City, Utah, USA · Founded 2002, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
The Tactile Group
Mobile App Development · Web Development · PHP · Also in Pennsylvania
The Tactile Group is a software development agency that has worked with technology since 2004.
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Why #8: Address in United States of America · Founded 2004, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
SmartLogic
Mobile App Development · Web Development · Mobile Platforms
SmartLogic builds custom web and mobile applications for organisations ranging from early-stage startups to Fortune 500 firms and forward-looking agencies.
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Why #9: Address in United States of America · Founded 2005, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Coalesce
Mobile App Development · Web Development · Web Design
Coalesce is a brand, product and engineering agency in New York City that has worked for more than 20 years.
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Why #10 (shared): Based in New York City · In business 20+ years · Owner-run, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
AllianceTek
Search Engine Optimization · PHP · eCommerce
AllianceTek is a software engineering and systems integration provider in the United States.
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Why #10 (shared): Based in United States · In business 20+ years, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
AllianceTek
Web Development · Web Design · Software Development
AllianceTek is a US software engineering and systems integration company. It builds mobile, cloud and web solutions, and has moved into AI and digital transformation work.
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Why #10 (shared): Based in United States · In business 20+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Zadro Web
Search Engine Optimization · Social Media Marketing · Web Development
Zadro Web is the web arm of Zadro Solutions, Inc., a firm founded in 2007. It builds custom websites and applications and specialises in technical SEO.
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Why #13 (shared): Address in United States of America · Founded 2007 · Boutique, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Solid Digital, LLC
Web Development · Web Design · Software Development
Solid Digital, LLC is a digital agency of developers, designers and marketers. It has operated since 2007, with offices in Chicago, Illinois, and Portland, Oregon.
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Why #13 (shared): Office in United States of America · Founded 2007, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Cremalab
Mobile App Development · Web Development · Web Design
Cremalab, which now trades as Crema, is a design and technology consultancy in Kansas City.
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Why #15 (shared): Based in Kansas City, Missouri, USA · Founded 2009, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Eight Bit Studios
Mobile App Development · Web Development · Web Design
Eight Bit Studios is a two-person app studio run by a developer in Chicago and a designer in Dallas.
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Why #15 (shared): Based in Chicago and Dallas · Founded 2009, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Forsys Inc.
ERP Software Development · Web Development · Software Development
Forsys Inc. is a consulting firm specialising in the lead-to-revenue process, from customer records and quoting through to billing and renewals.
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Why #17: Based in Milpitas, California · Founded 2010 · Team of 300+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Unified Infotech
Mobile App Development · Embedded Software Development · Web Development
Unified Infotech is a software and digital transformation firm with headquarters in New York and an office in Kolkata, India.
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Why #18: Based in New York, USA, with an office in Kolkata, India · Founded 2010, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
LuxDevelop
Mobile App Development · Web Development · PHP · Also in Ukraine
LuxDevelop is an outsourcing company that develops websites, mobile applications and software and also handles online advertising.
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Why #19 (shared): Based in Baltimore, Maryland, USA · Founded 2013, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
Apptunix
Mobile App Development · Web Development · Web Design
Apptunix is an app and web development agency based in Texas, USA.
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Why #19 (shared): Based in Texas, USA · Founded 2013, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
EltexSoft, LLC
Web Development · Web Design · Software Development
EltexSoft is a boutique software engineering studio headquartered in Los Angeles.
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Why #21 (shared): Based in Los Angeles, USA · Founded 2015 · Boutique, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
BL3NDlabs
Web Development · Web Design · Software Development
BL3NDlabs is a product studio that joins strategy, design and engineering. It builds digital products, platforms and brands. Its website says it was founded in 2015 in San Diego.
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Why #21 (shared): Based in San Diego · Founded 2015, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Vinta Software
Web Development · Web Design · Software Development · Also in Brazil
Vinta Software is a software development company that has worked as an open-source contributor from the start.
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Why #23 (shared): Office in United States of America · In business 10+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
BDIT Engineering
Mobile App Development · Web Development · Web Design · Also in Serbia
BDIT Engineering is a software engineering firm headquartered in Novi Sad, with an office in San Francisco.
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Why #23 (shared): Based in Novi Sad, with an office in San Francisco · In business 10+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.

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Top Custom Software Development Companies in the USA

SoluLab INC

Agile Infoways

Tekshapers Software Solution

Billennium

ServerLogic

Caxy Interactive

Techliance

The Tactile Group

SmartLogic

Coalesce

AllianceTek

AllianceTek

Zadro Web

Solid Digital, LLC

Cremalab

Eight Bit Studios

Forsys Inc.

Unified Infotech

LuxDevelop

Apptunix

EltexSoft, LLC

BL3NDlabs

Vinta Software

BDIT Engineering