Top App Development Companies for Custom Software Development

Between them, the 34 app development companies on this page cover software development (27), web development (24), financial services (16) and web design (15). They also list work in Illinois, Alberta, Chicago and Houston. 34 of them have written a profile you can read before you get in touch.

1. 1

   

   Evotek

   Consumer Products & Services · Software Development · Financial Services · Also in Hanoi, Vietnam

   Evotek is a software company from Hanoi, Vietnam, incorporated in 2018.

   Write a review

   Why #1: Founded 2018 · ISO 9001, ISO 27001, professional accreditation, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

2. 2

   

   Diatom Enterprises

   Mobile App Development · Hospitality & Leisure · Software Development · Also in Latvia

   Diatom Enterprises is a custom software development company that builds web, mobile and desktop applications for clients across North America and Europe.

   Write a review

   Why #2: Founded 2004 · Team of 60+, as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

3. 3

   

   Hashe Computer Solutions (Pvt) Ltd.

   Arts, Entertainment & Music · Advertising & Marketing · Social Media Marketing

   Hashe Computer Solutions (Pvt) Ltd is an IT services and software outsourcing company that describes itself as a global partner.

   Write a review

   Why #3: Founded 1998, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

4. 4

   

   Endertech

   Consumer Products & Services · Web Development · Web Design · Also in California

   Los Angeles agency delivering ecommerce, custom software, AI workflows and performance marketing for established businesses

   Write a review

   Why #4: Founded 2000, as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

5. 5

   

   Caxy Interactive

   Web Development · Financial Services · E-Commerce Development · Also in Lyon and Illinois

   Caxy Interactive is a Chicago software company that has been working for around 25 years.

   Write a review

   Why #5: In business 25+ years, as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

6. 6

   

   GP Solutions

   Mobile App Development · Hospitality & Leisure · Software Development · Also in Lincoln and Warszawa

   GP Solutions builds custom software and has a long history in travel technology, having started in 2002.

   Write a review

   Why #6: Founded 2002, as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

7. 7

   

   GiantByte Software

   Software Development · Web Development · Web Design · Also in Alberta

   GiantByte Software writes custom software for businesses in Edmonton, Alberta, and beyond.

   Write a review

   Why #7: Founded 2004, as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

8. 8

   

   CSW Solutions Inc.

   Mobile App Development · Web Development · Financial Services · Also in Chicago

   CSW Solutions Inc. is an IT consulting firm in Chicago that combines managed IT with custom software development.

   Write a review

   Why #8: In business 20+ years, as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

9. 9

   

   eDesign

   Supply Chain, Logistics, and Transport · Social Media Marketing · Software Development · Also in Saudi Arabia

   eDesign is a digital agency in Saudi Arabia that has operated since 2007. It was set up by Ahmed H. Taibah and Yousef H.

   Write a review

   Why #9: Founded 2007 · Team of 38+, as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

10. 10

    

    eGrove Systems

    Consumer Products & Services · Mobile App Development · Software Development · Also in United States of America

    eGrove Systems is a digital solutions company that builds AI-powered applications, enterprise software, cloud solutions, e-commerce platforms and digital marketing services.

    Write a review

    Why #10: In business 18+ years · Project numbers stated on its own website, as stated on its own website, read 28 Sept 2026

    Not yet on record: client reviews, vetting.

11. 11

    

    Gorrion Software House

    Energy & Natural Resources · Advertising & Marketing · Software Development · Also in Las Vegas

    Gorrion Software House builds custom web and mobile software and has been doing so since 2009.

    Write a review

    Why #11: Founded 2009, as stated on its own website, read 28 Sept 2026

    Not yet on record: client reviews, vetting.

12. =12

    

    Cleveroad

    Mobile App Development · Web Development · Web Design · Also in Ukraine

    Cleveroad is a software development company that builds mobile apps, web platforms and other custom systems.

    Write a review

    Why #12 (shared): In business 15+ years, as stated on its own website, read 5 Oct 2026

    Not yet on record: client reviews, vetting.

13. =12

    

    Appicoders

    Software Development · Android · Medical

    Appicoders is a custom software development company in the USA that works on mobile and web apps, cloud, blockchain and AI.

    Write a review

    Why #12 (shared): In business 15+ years, as stated on its own website, read 28 Sept 2026

    Not yet on record: client reviews, vetting.

14. 14

    

    iapp Technologies LLP

    Software Development · Web Development · Web Design · Also in Georgia and Sandwich

    iapp Technologies LLP is a software development company that builds AI-powered products, mobile apps, websites and custom software.

    Write a review

    Why #14: In business 12+ years, as stated on its own website, read 28 Sept 2026

    Not yet on record: client reviews, vetting.

15. 15

    

    KnubiSoft

    Supply Chain, Logistics, and Transport · Software Development · Web Development · Also in United Kingdom

    KnubiSoft builds custom software and sets up dedicated development teams for its clients.

    Write a review

    Why #15: In business 10+ years, as stated on its own website, read 28 Sept 2026

    Not yet on record: client reviews, vetting.

16. 16

    

    Fively

    Software Development · Web Development · Financial Services · Also in Belarus

    Fively has been building bespoke B2B software since 2018. It focuses on custom development for startups, taking products from early idea to prototype, MVP and full release, and…

    Write a review

    Why #16: Founded 2018, as stated on its own website, read 28 Sept 2026

    Not yet on record: client reviews, vetting.

17. 17

    

    BoTree Technologies

    Energy & Natural Resources · Hospitality & Leisure · Software Development

    BoTree Technologies is a custom software developer with a presence in the USA, Singapore and India.

    Write a review

    Why #17: Team of 100+ · Project numbers stated on its own website, as stated on its own website, read 28 Sept 2026

    Not yet on record: client reviews, vetting.

18. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
19. –

    

    BIT Studios

    Consumer Products & Services · Energy & Natural Resources · Advertising & Marketing · Also in Chicago

    Custom software developer offering web, mobile, QA, outsourcing and team augmentation services to startups and businesses

    Write a review
20. –

    

    Breakthrough Technologies

    Arts, Entertainment & Music · Mobile App Development · Advertising & Marketing · Also in Illinois

    US software firm building open-source assessment platforms and custom web tools for education, associations and nonprofits

    Write a review
21. –

    

    Camino Information Services

    Hospitality & Leisure · Software Development · Financial Services · Also in Houston

    Camino Information Services develops bespoke software and mobile applications, with a strong track record in healthcare.

    Write a review
22. –

    

    Celerik

    Energy & Natural Resources · Mobile App Development · Software Development · Also in Colombia

    Celerik designs and builds AI systems, data platforms and bespoke software for organisations that need to modernise and connect their core systems.

    Write a review
23. –

    

    Cybervn

    Software Development · Application Development · .NET · Also in Austin and Houston

    Cybervn is a custom software company in Houston, Texas. It researches, designs, builds, tests and supports applications for small and mid-sized US businesses, many of them in…

    Write a review
24. –

    

    Daden LLC

    Software Development · Financial Services · Business Services

    Daden LLC develops custom software and mobile applications for businesses.

    Write a review
25. –

    

    Dashbouquet Development

    Advertising & Marketing · Software Development · Web Development · Also in United States of America

    Dashbouquet Development is a custom software company with particular depth in front-end engineering.

    Write a review

Articles

Related reading

Articles on this subject first, then the newest.

All articles

Software Development

17 Sept 2026 · TrustList Editorial

How to choose a software development company: the 2026 buyer's guide

How to brief a software development company, what to check before you sign, and the contract terms on code ownership, personal data and…

Mobile App Development

17 Sept 2026 · TrustList Editorial

How to choose a mobile app development company: the 2026 buyer's guide

What to check before hiring an app developer: store accounts and review rules, OWASP MASVS security, privacy declarations, ownership and…

Japan

27 Oct 2026 · TrustList Editorial

GMO confirms Onamae Desktop Cloud data theft, sets 30 October notice

The attacker demanded about 8 billion yen and threatened to publish data and launch ransomware at noon on 27 October. GMO refuses to pay…