Top 100 Application Modernization Companies in California

The Best of December 2024

Looking 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.

Jump to Most Reviewed Companies

List of the Best California Enterprise Application Modernization Services

1

Turing
(4 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  4.9
- $50,000+
- 250 - 999 employees
- Palo Alto, CA
Turing is a small IT staff augmentation company. Established in 2018, the agency is in Palo Alto, California. Their services include IT staff augmentation.

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2

Vardot
(55 Reviews) 4.9
- Timeliness
  4.9
- Service Excellence
  4.9
- Value
  4.9
- Would Recommend
  4.9
- $25,000+
- 50 - 249 employees
- Santa Clara, CA
Vardot is a web and software development company headquartered in Santa Clara, Calif., with offices in Jordan and Egypt. Founded in 2011, the team of 36 specializes in web development, custom software development, and web design. They work primarily with midmarket-level clients, focusing on education, media, and nonprofit.

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Clients
- BCG
Industries
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3

Art+Logic
(13 Reviews) 4.7
- Timeliness
  4.5
- Service Excellence
  4.7
- Value
  4.5
- Would Recommend
  4.8
- $5,000+
- 50 - 249 employees
- Pasadena, CA
Located in Pasadena, Calif., Art + Logic is a development and design firm that was founded in 1991. The team of 85 work with a diverse set of clients on their custom software development, web development, web design, and mobile app development needs.

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Clients
- Yamaha
- Kroger
- Trader Joes
- NASA
Industries
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4

DevTeamSpace
(41 Reviews) 4.9
- Timeliness
  4.7
- Service Excellence
  4.9
- Value
  4.8
- Would Recommend
  5.0
- $10,000+
- 50 - 249 employees
- Los Angeles, CA
DevTeam.Space is a development agency that was founded in 2015 and is based in Los Angeles. Their team of 8 specialize in web development and mobile app development for small businesses; these clients primarily reside in the advertising, business services, and consumer product industries.

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Clients
- Airbus
Industries
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5

TheoremOne
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $100,000+
- 250 - 999 employees
- Los Angeles, CA
Founded in 2007, Theorem is a software development firm. The midsize team specializes in custom software development, ux/ui design, IoT development, IT strategy consulting, and more. The company is based in Los Angeles, California; Santa Monica, California; New York, New York and San Francisco, California.

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Clients
- AT&T
Industries
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6

Baytech Consulting
(9 Reviews) 5.0
- Timeliness
  4.9
- Service Excellence
  5.0
- Value
  4.8
- Would Recommend
  5.0
- $25,000+
- 10 - 49 employees
- Irvine, CA
Baytech Consulting is a custom software development firm founded in 2007. Their small team is headquartered in Irvine, California. Their services include Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more.
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Clients
- Petra Medical College
Industries
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7

ISBX Corp
(13 Reviews) 5.0
- Timeliness
  4.8
- Service Excellence
  5.0
- Value
  4.8
- Would Recommend
  5.0
- $50,000+
- 50 - 249 employees
- Los Angeles, CA
Los Angeles, CA-based digital agency ISBX has been building mobile apps for its customers since 2009. ISBX has a mid-size team that offers a comprehensive slate of services, including user experience (UX) design, mobile and web development, creative branding, and marketing.The CTO went on to say that they appreciated that ISBX was understanding, responsive, and easy to communicate with.

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Clients
- Science37
- BrainCorp
- Red Bull - Multiple Projects
- Apple/Beats
Industries
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8

Apex Lab
(19 Reviews) 4.9
- Timeliness
  4.8
- Service Excellence
  4.9
- Value
  4.9
- Would Recommend
  4.9
- $5,000+
- 10 - 49 employees
- San Francisco, CA
Launched in 2020, Apex Lab is a software development company. Their small team is based in Tallinn, Estonia and San Francisco, California. Their team offers custom software development, mobile app development, web development, and enterprise app modernization.

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9

Bitwise Industries
(10 Reviews) 4.7
- Timeliness
  4.2
- Service Excellence
  4.7
- Value
  4.3
- Would Recommend
  4.8
- $25,000+
- 250 - 999 employees
- Fresno, CA
Shift3 Technologies is a software-development-as-a-service firm based out of Fresno, Calif. Founded in 2013, the team of 65+ specializes in custom software, web, and mobile app development as well as enterprise system modernization and integration to help its small to mid-market clients achieve their goals.

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Clients
- Fresno Unified School District
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10

MartianCraft
(2 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- Undisclosed
- 50 - 249 employees
- San Francisco, CA
Martian Craft is a user experience design company established in 2010. The company provides ux/ui design, cloud consulting & SI, custom software development, web development, and more and has a midsize team.

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Clients
- Apple
Industries
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11

Invemo
(2 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $10,000+
- 10 - 49 employees
- Santa Monica, CA
Founded in 2005, Invemo is a tech company headquartered in Santa Monica with another location in IST, Turkey. Their team of 4 provide mobile app development, UX/UI design, IT strategy, and app modernization services to clients.

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Clients
- Invemo created innovative solutions for Philips
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12

Company A
(4 Reviews) 4.8
- Timeliness
  4.6
- Service Excellence
  4.6
- Value
  4.6
- Would Recommend
  5.0
- $50,000+
- 10 - 49 employees
- Irvine, CA
Company A is a custom application development company based in Irvine, Calif., with offices in Plano, Texas, and Novi Sad, Serbia. The company, founded in 2015, has a team of more than ten that provides cloud consulting & SI, custom software development, web development, mobile app development, and enterprise app modernization services. Company A serves small and larger-sized companies in various industries, including IT, financial services, and health care & medical.

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13

New Leaders
(4 Reviews) 4.9
- Timeliness
  4.4
- Service Excellence
  4.9
- Value
  4.6
- Would Recommend
  5.0
- $25,000+
- 10 - 49 employees
- Truckee, CA
New Leaders is a technical services firm of 29 employees, established in 2007. They are headquartered in Truckee, Calif., with a second office in Beijing, China. They offer custom software development, e-commerce development, and UX/UI design. They primarily serve clients in midmarket and small businesses in the healthcare, business, and consumer products industries.

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Clients
- Appfolio.com
Industries
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14

Calibec
(3 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $5,000+
- 2 - 9 employees
- Mission Viejo, CA
Calibec is a small custom software development firm. Founded in 2021, the team offers custom software development, web development, mobile app development, enterprise app modernization, and more. The agency is located in Mission Viejo, California.

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Industries
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15

Prestige Development Group
(11 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  4.9
- Value
  5.0
- Would Recommend
  5.0
- $10,000+
- 10 - 49 employees
- Sacramento, CA
Prestige Development Group is an IT staff augmentation company based in Sacramento, California. The small firm was launched in 2016. Their team specializes in IT staff augmentation, custom software development, mobile app development, and blockchain.

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Clients
- Capital One
Industries
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16

Nexeo
(11 Reviews) 5.0
- Timeliness
  4.9
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $1,000+
- 2 - 9 employees
- Los Angeles, CA
Themis Web Technologies is a software development company based in Los Angeles, California. Founded in 2007, they are a sole proprietorship that provides web development, e-commerce development, custom software development, and enterprise app modernization.

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Clients
- Incited Media
Industries
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17

E8 Labs
(4 Reviews) 4.9
- Timeliness
  4.3
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $25,000+
- 10 - 49 employees
- San Jose, CA
Based in San Jose, California, E8 Labs is a mobile app development company. The company provides mobile app development, custom software development, web development, e-commerce development, and more and is small.The company was founded in 2017.

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Clients
- Enlightened Meditation
Industries
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18

Devsarch
(3 Reviews) 5.0
- Timeliness
  4.7
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $5,000+
- 10 - 49 employees
- El Segundo, CA
Devsarch LLC, a data analytics company, is located in Dover, Delaware; Riyadh, Saudi Arabia; Dubai, United Arab Emirates and Lahore, Pakistan. The agency focuses on BI & big data consulting & SI, cloud consulting & SI, IT managed services, digital engineering, and more and has a small team.The agency was established in 2020.
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Clients
- Buzzen Digital
- Stanford University
- KU Leuven
- Lucky Motors
Industries
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19

Atricore
(5 Reviews) 4.8
- Timeliness
  4.9
- Service Excellence
  4.8
- Value
  4.7
- Would Recommend
  5.0
- $5,000+
- 10 - 49 employees
- Sausalito, CA
Atricore is an agile Sausalito, California-based IAM product, services, and consulting company launched in 2007. Their team of IAM experts focuses on identity and access management orchestration and modernization, cybersecurity, and IT strategy consulting; with SaaS tools for cloud identity migration.

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20

Ideas Factory US
(3 Reviews) 4.7
- Timeliness
  4.7
- Service Excellence
  4.3
- Value
  4.7
- Would Recommend
  4.8
- $25,000+
- 2 - 9 employees
- Fairfield, CA
Ideas Factory US is a custom software development company established in 2014. Based in Fairfield, California, their small team focuses on custom software development, enterprise app modernization, IT strategy consulting, cloud consulting & SI, and more.

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Industries
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21

InfiniOne
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $10,000+
- 2 - 9 employees
- Los Angeles, CA
InfiniOne is a software development agency that has been offering mobile app development, custom software development, and web development services to their clients in the financial services, business services, and e-commerce industries since 2012. Their team of 10 employees are based out of their offices in Los Angeles, Beverly Hills, Calif., and Liberty, Pakistan.

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Clients
- Skinnygirl
Industries
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22

Gaper
(14 Reviews) 4.3
- Timeliness
  4.4
- Service Excellence
  4.3
- Value
  4.3
- Would Recommend
  4.4
- $50,000+
- 250 - 999 employees
- San Francisco, CA
Gaper is a software company founded in San Francisco in 2018. With over 250 professionals, they provide IT staff augmentation, custom software development, and AI solutions to clients ranging from small companies to large businesses.

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Clients
- Madera
Industries
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23

Worklab.io, Inc.
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $10,000+
- 2 - 9 employees
- Burbank, CA
Worklab.io, Inc. is a software agency founded in 2011 with no more than 10 members. They offer custom software, web, and mobile app development solutions from their office in Burbank, Calif. They work with small and mid-market firms in the field of business services.

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Clients
- All State Association
Industries
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24

WellomyTech
(1 Reviews) 5.0
- Timeliness
  4.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $1,000+
- 2 - 9 employees
- Corona, CA
Located in Corona, California, WellomyTech is an IT managed services company. They offer IT managed services, Artificial Intelligence, custom software development, enterprise app modernization, and more and were established in 2021.
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25

Sitecraft Inc.
(4 Reviews) 5.0
- Timeliness
  4.8
- Service Excellence
  4.9
- Value
  4.8
- Would Recommend
  5.0
- $1,000+
- 10 - 49 employees
- San Diego, CA
SiteCraft Inc. Is a small software development company. They specialize in custom software development, web development, ux/ui design, e-commerce development, and more and were launched in 2016. The company is headquartered in , Ukraine.

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26

Laminar Consulting Services Inc.
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $50,000+
- 10 - 49 employees
- Lake Forest, CA
Laminar Consulting Services Inc. is an application development firm located in Foothill Ranch, Calif. Founded in 20015, they currently have about 3 employees. They offer custom software development, application testing, and enterprise app modernization services to primarily midmarket firms in financial services as well as the health care and medical industries.

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Clients
- Exemplis
Industries
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27

Agile Soft Systems, Inc
(4 Reviews) 4.9
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  4.9
- Would Recommend
  5.0
- $10,000+
- 50 - 249 employees
- Fremont, CA
Agile Soft Systems, Inc, a custom software development firm, was launched in 2012. Their midsize team is headquartered in Fremont, California. Their services include custom software development, application testing, blockchain, enterprise app modernization, and more.

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28

Chiron IT

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- Irvine, CA
Established in 2017, Chiron IT is an Enterprise App Modernization company. Their team focuses on Enterprise App Modernization and IT managed services.
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29

Streamline social
(1 Reviews) 5.0
- Timeliness
  4.0
- Service Excellence
  4.0
- Value
  5.0
- Would Recommend
  5.0
- $10,000+
- 10 - 49 employees
- San Francisco, CA
Streamline social, a software development firm, is headquartered in San Francisco, California; Buffalo, New York and Montevideo, Uruguay. Founded in 2009, the small team specializes in custom software development, mobile app development, ux/ui design, product design, and more.

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30

Agency73
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- Undisclosed
- 2 - 9 employees
- Encinitas, CA
Agency73 is a development shop based in Encinitas, Calif. Founded in 2017, Agency73's team of about 10 employees specializes in providing custom software development, web development, and e-commerce development services for mid-market and enterprise businesses in the healthcare, advertising and IT industries.

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Clients
- Intuit
Industries
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