Top 100 Application Modernization Companies in California
The Best of March 2026Looking for a top legacy modernization service in California?
Application modernization companies can help create new business value from existing applications. Finding the right company to partner with, however, can be an overwhelming process.
To assist you in your search for a partner, we’ve compiled this list of the top application modernization services in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California Enterprise Application Modernization Services
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121$10,000+2 - 9 employeesRowland Heights, CAClockCode, a software development company, is based in Rowland Heights, California. Their services include Custom Software Development and Web Development.Read More
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122$5,000+250 - 999 employeesMilpitas, CAChirpn IT Solutions, an IT staff augmentation company, was launched in 2016. Their midsize team is based in Milpitas, California; Girraween, Australia and Pune, India. The company provides IT staff augmentation, custom software development, web design, enterprise app modernization, and more.Read More
Industries
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123$1,000+Freelancer employeesAnaheim, CAFounded in 2014, socialomical is a small Anaheim, California-based branding agency. Their team specializes in Branding and Product Design.Read More
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124$10,000+250 - 999 employeesSanta Clara, CAWinWire Technologies is an user experience company. Their midsize team is based in Santa Clara, California and Hyderabad, India. Their services include UX/UI Design and cloud consulting & SI.Read More
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125Undisclosed10 - 49 employeesSan Ramon, CACidersoft is a web design company. The San Ramon, California-based team provides Web Design and UX/UI Design.Read More
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126Undisclosed2 - 9 employeesCupertino, CAStep Ahead Solutions, Inc. Is a Cybersecurity company. Launched in 2006, the company is headquartered in Cupertino, California. Their services include Cybersecurity and BI & big data consulting & SI.Read More
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127Undisclosed50 - 249 employeesSan Jose, CAMobile application development company EnLume Inc is in San Jose, California and Hyderabad, India. They focus on Mobile App Development and Enterprise App Modernization.Read More
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128$25,000+250 - 999 employeesSan Francisco, CAPythian is a business intelligence company in Ottawa, Canada and San Francisco, California. They specialize in BI & big data consulting & SI and cloud consulting & SI and were launched in 1997.Read More
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Fox SportsIndustries
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129Undisclosed50 - 249 employeesSan Francisco, CAThoughtMinds is a Generative AI company. The team offers Generative AI and Artificial Intelligence, and the company is in San Francisco, California and Navi Mumbai, India.Read More
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130Undisclosed50 - 249 employeesSanta Clara, CASATech Digital is a software development company. The Santa Clara, California-based team focuses on Custom Software Development and Enterprise App Modernization.Read More
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131$100,000+10 - 49 employeesFolsom, CAFounded in 2018, Flexday Solutions LLC is a small Naperville, Illinois-based IT strategy consulting company. Their services include IT strategy consulting and cloud consulting & SI.Read More
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132Undisclosed10 - 49 employeesSan Francisco, CASoftware Next Door is a software development firm. The team focuses on Custom Software Development and Mobile App Development and is headquartered in San Francisco, California.Read More
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133$10,000+10 - 49 employeesSan Jose, CAArastu Systems is an IoT development company. The agency is in San Jose, California and Ahmedabad, India. Their team provides IoT development and Enterprise App Modernization.Read More
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134$25,000+1,000 - 9,999 employeesLos Angeles, CASimform is a cloud consulting & SI company. Founded in 2010, the agency is in Orlando, Florida; Los Angeles, California; Chicago, Illinois and San Francisco, California. The large team specializes in cloud consulting & SI, Artificial Intelligence, Custom Software Development, Enterprise App Modernization, and more.Read More
Clients
RedbullIndustries
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135$5,000+50 - 249 employeesSanta Rosa, CARead More
GeneXus Consulting is corporate software development company based in Montevideo, Uruguay, with an additional location in Santa Rosa, Calif. Founded in 1988, the team of nearly 110 provides web, mobile app, and custom software development, enterprise app modernization, and application testing services.
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BPSIndustries
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136$25,000+250 - 999 employeesNewark, CAArgusoft is a software development firm. They offer Custom Software Development, Mobile App Development, Web Development, Enterprise App Modernization, and more and were established in 2001. Their midsize team is based in Newark, California and Gandhinagar, India.Read More
Clients
World Health Organization (WHO)Industries
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137$50,000+50 - 249 employeesPalo Alto, CARobiquity is an IT strategy consulting company. Based in Manchester, England and Toronto, Canada, the team provides IT strategy consulting and cloud consulting & SI.Read More
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138Undisclosed2 - 9 employeesPalo Alto, CASmart IT Concepts is a custom software development company. The Palo Alto, California-based firm was established in 2009. Their services include Custom Software Development and Web Development.Read More
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139Undisclosed2 - 9 employeesLos Angeles, CAAztecaNet Inc. Is a software development firm headquartered in Los Angeles, California. They focus on Custom Software Development and Web Development.Read More
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140$5,000+10 - 49 employeesSan Jose, CACRM consulting and SI company Clone-Tech is in San Jose, California and Nairobi, Kenya. They focus on CRM consulting and SI and ERP consulting and SI and were founded in 2022.Read More
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141Undisclosed10 - 49 employeesSunnyvale, CAEcomZera is an e-commerce development firm launched in 2005. The team provides E-Commerce Development and Web Development.Read More
Clients
GiftingIncIndustries
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142$5,000+50 - 249 employeesSan Francisco, CATechnoBrains Business Solutions LLP is a San Francisco, California-based custom software development company. The midsize agency was launched in 2009. Their services include Custom Software Development, Web Development, Artificial Intelligence, AI Consulting, and more.Read More
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143$10,000+50 - 249 employeesSan Francisco, CASoftDoes is an AI Agents company established in 2019. They are based in Mission, Kansas; Atlanta, Georgia; Dallas, Texas and Nashville, Tennessee and have a midsize team. The agency provides AI Agents, Generative AI, AI Consulting, Artificial Intelligence, and more.Read More
Clients
FMY OrthodonticsIndustries
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144$100,000+1,000 - 9,999 employeesOakland, CARead More
CI&T (formerly CINQ Technologies) is software development company based in Curitiba, Brazil with additional offices in Brazil and Miami. Founded in 1992, the team of 271 specializes in custom software development, IT staff augmentation, and UX/UI design. They work primarily with enterprise clients in the transportation and financial services industries.
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SITAIndustries
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145Undisclosed1,000 - 9,999 employeesSan Mateo, CAFounded in 2003, Augmentum, Inc. Is a software development firm and Enterprise App Modernization company. Their services include Custom Software Development and Enterprise App Modernization.Read More
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146$5,000+50 - 249 employeesSan Jose, CAXetech is a cloud consulting & SI company. They focus on cloud consulting & SI and Custom Software Development and are located in Frimley, England and San Jose, California.Read More
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147$10,000+250 - 999 employeesBeverly Hills, CARead More
Founded in 1998, IndiaNIC is a mobile app and web development industry veteran. Since its founding, IndiaNIC has expanded to two offices in Ahmedabad, India and Sunnyvale, CA. The team of over 400 employees handles projects in mobile and web development, IoT solutions, wearable technology, and mobile gaming.
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Gulfstream Aerospace CorporationIndustries
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148$25,000+250 - 999 employeesCupertino, CAPratham Software is an Enterprise App Modernization company. They offer Enterprise App Modernization, Custom Software Development, Digital Engineering, Artificial Intelligence, and more and were founded in 2000. The company is headquartered in Cupertino, California; Jaipur, India; Cardiff, Wales and Oberhaching, Germany.Read More
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149$50,000+1,000 - 9,999 employeesSaratoga, CARead More
Headquartered in L'viv, Ukraine; New York, New York; Saratoga, California and Bellevue, Washington, Sigma Software Group is a software development company. The large agency was established in 2002. Their services include Custom Software Development, Web Development, Mobile App Development, BI & big data consulting & SI, and more.
Clients
VolvoIndustries
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150$10,000+1,000 - 9,999 employeesSan Ramon, CANeurealm is a Cybersecurity company. Their large team is headquartered in Princeton, New Jersey; San Ramon, California; Santa Clara, California and Chennai, India. The firm provides Cybersecurity, Custom Software Development, Artificial Intelligence, Generative AI, and more. The firm was launched in 1998.Read More
Industries
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