Top 100 Startup Software Development Companies
The Best of December 2025Looking for a top Startups custom software developer?
Software developers own the process of transforming data into an organized structure for a product such as a mobile app or website. As you tackle complex development projects to grow your business, you'll need the right partner for your needs.
Check out our directory of Startup software development companies. Browse reviews and ratings and scan by industry or specialty to find the company that's the best fit for you.
List of the Best Startup Custom Software Developers
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$25,000+10 - 49 employeesMedina, WAFlower Press Interactive is a small user experience agency launched in 2001. Their team offers UX/UI Design, Mobile App Development, Custom Software Development, Web Development, and more. The company is located in Medina, Washington.Read More
Industries
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$10,000+10 - 49 employeesJohannesburg, South AfricaRead More
Mobile application development firm CubeZoo was established in 2011. In Johannesburg, South Africa and London, England, their small team specializes in Mobile App Development, Web Development, Artificial Intelligence, UX/UI Design, and more.
Industries
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31$10,000+250 - 999 employeesStuttgart, GermanyRead More
Launched in 2000, *instinctools is a software development company. The midsize team specializes in Custom Software Development, Web Development, IT strategy consulting, Mobile App Development, and more. The firm is in Stuttgart, Germany; Warszawa, Poland; Mississauga, Canada and Wilmington, Delaware.
Clients
Daimler Fujitsu Nostrum SpexAIIndustries
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32$10,000+250 - 999 employeesBuenos Aires, ArgentinaRead More
Vates is a software development firm that offers IoT development, BI and big data consulting, and custom software development to small business, enterprise, and mid-market clients in the telecommunications, financial, and consumer products services industries. Founded in 1991, their 350+ employees are based across the globe in Aventura, Fla., Sausalito, Calif., Buenos Aires and Cordoba, Argentina, and Santiago, Chile.
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IBMIndustries
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33$5,000+50 - 249 employeesPlano, TXRead More
Agency Partner Interactive LLC is a custom software development firm established in 2010. The firm focuses on Custom Software Development, Web Design, Mobile App Development, Web Development, and more and has a midsize team.
Clients
Parks Associates Warrior Logistics Zodiac Maevn OutletIndustries
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34$25,000+250 - 999 employeesPoznań, PolandSTX Next is an AI firm established in 2005. The company focuses on Artificial Intelligence, BI & big data consulting & SI, Custom Software Development, Web Development, and more and has a midsize team.Read More
Clients
Mastercard Canon Hogarth ManIndustries
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35$5,000+10 - 49 employeesKyiv, UkraineRead More
Faster Than Light is a software development company based in Kyiv, Ukraine; Tallinn, Estonia and Barrie, Canada. The small agency was established in 2016. Their team provides Custom Software Development, Web Development, Mobile App Development, and Web Design.
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36$10,000+50 - 249 employeesAtlanta, GAIntuitio Labs is a custom software development firm in Atlanta, Georgia; Reading, Massachusetts; Bradenton, Florida and Martínez, Argentina. The midsize agency was founded in 2018. Their services include Custom Software Development, UX/UI Design, Mobile App Development, and Web Development.Read More
Clients
TmroIndustries
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37$25,000+50 - 249 employeesDnipro, UkraineClockwise Software is a software development firm based in Dnipro, Ukraine. The midsize team offers Custom Software Development, Artificial Intelligence, and IT managed services. The firm was launched in 2014.Read More
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Johnson & JohnsonIndustries
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38$25,000+50 - 249 employeesMontevideo, UruguayCodigoDelSur is a midsize mobile application development firm established in 2007. Their team specializes in Mobile App Development, Custom Software Development, Web Development, and Artificial Intelligence. The agency is based in Montevideo, Uruguay.Read More
Clients
Grubhub Shutterfly Uplift MoviepassIndustries
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39$25,000+50 - 249 employeesKyiv, UkraineLaunched in 2010, Glorium Technologies is an ERP consulting and SI company. The firm provides ERP consulting and SI, Custom Software Development, Digital Strategy, Artificial Intelligence, and more and has a midsize team. The firm is in Houston, Texas; Kyiv, Ukraine; Pafos, Cyprus and Kraków, Poland.Read More
Clients
CAE Healthcare PACS Harmony Bodyo ITR SoftwareIndustries
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40$10,000+50 - 249 employeesDa nang, VietnamEnlab Software, a custom software development firm, is located in Da nang, Vietnam and Austin, Texas. They offer Custom Software Development, Enterprise App Modernization, Mobile App Development, and Web Development and were founded in 2013.Read More
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VantagePoint ConsultingIndustries
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41$5,000+1,000 - 9,999 employeesBiałystok, PolandRead More
Founded in 2004, Qburst is a product development and consulting company of 1300+ designers, developers, UX engineers, and business analysts. Headquartered in Trivandrum, India with offices in the UK, California, Virginia, and Poland, their team focuses on web, mobile, and cloud-based solutions of all sizes.
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United NationsIndustries
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42$25,000+50 - 249 employeesLos Angeles, CAMobile app development company Goji Labs was established in 2014. The firm provides Mobile App Development, UX/UI Design, Custom Software Development, Web Design, and more and has a midsize team. The firm is headquartered in Los Angeles, California and New York, New York.Read More
Clients
World Health OrganizationIndustries
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43$5,000+50 - 249 employeesDnipro, UkraineRead More
Kultprosvet is an app development firm headquartered in Dnipro, Ukraine and Giv'atayim, Israel. Launched in 2012, the midsize team offers Mobile App Development, Custom Software Development, UX/UI Design, Web Development, and more.
Clients
Liquidity Capital PolySurance (PolyCam) Bettercare Gifted (Gifted.co)Industries
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44$10,000+250 - 999 employeesNashua, NHRead More
A tech frontrunner since 1989, Zco is a full-stack app development firm offering web, mobile, and animation services. Headquartered in Nashua, New Hampshire with a Boston office, the 200+ specialists comprise a powerhouse team with outstanding and varied proficiencies.
Clients
GolflogixIndustries
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45$10,000+50 - 249 employeesGdańsk, PolandRead More
In Gdańsk, Poland and New York, New York, Neoteric is a Generative AI company. The midsize team focuses on Generative AI, Artificial Intelligence, AI Consulting, Custom Software Development, and more and was launched in 2005.
Clients
KIONA (Energy, Utilities), Siemens (Electronics), Nestle (FMCG), The World Bank (Finance), Liveramp (Data integration), Boeing (Aviation), Crowdstrike (Cybersecurity), Apporchid (AI), Nanoramic (Energy), Client.io (Diagramming), yWorks (Diagramming)Industries
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46$25,000+10 - 49 employeesBogotá, ColombiaRead More
Founded in 2020, Leanware is an IT staff augmentation company. In Bogotá, Colombia and Miami, Florida, their small team provides IT staff augmentation, Custom Software Development, Mobile App Development, AI Consulting, and more.
Industries
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47$50,000+50 - 249 employeesSanta Monica, CARead More
Sidebench is a strategy, design, and development consultancy with a team of 70+ experts headquartered in Los Angeles. Founded in 2012, Sidebench caters to enterprise companies and new ventures seeking the management consultants & experienced founders, the technical chops of systems architects, and a UX-first approach. Sidebench provides app and web development, UX/UI design, web design, and app testing via a fully integrated product delivery team.
Clients
Microsoft CorporationIndustries
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48$5,000+250 - 999 employeesBiałystok, PolandRead More
SoftwareHut is a software development house with offices around the world, including London, New York, Paris, Munich, Dublin, Stockholm, Copenhagen and Zurich. Founded in 2015, they also have seven offices in Poland, including Bialystock, Olsztyn, Przemysl, Szczecin, Warsaw, Wroclaw, and Poznan. They employ 173 staff specializing in designing, customizing and developing professional IT systems, LIMS, SCM, and mobile apps.
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MicrosoftIndustries
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49$50,000+50 - 249 employeesBarranquilla, ColombiaRead More
Koombea is a midsize app development company. Located in Miami, Florida; Barranquilla, Colombia; New York, New York and San Francisco, California, the agency was launched in 2007. Their team specializes in Mobile App Development, Custom Software Development, Web Development, UX/UI Design, and more.
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Motorola SolutionsIndustries
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50$50,000+50 - 249 employeesLos Angeles, CARead More
CitrusBits is a mobile app development company based in Los Angeles, CA and founded in 2005. The team of nearly 60 employees is passionate about creating mobile technology and responsive mobile content for all businesses.
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Burger KingIndustries
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51$25,000+10 - 49 employeesMcMinnville, ORRead More
Buildable Custom Software is a software development firm in McMinnville, Oregon; Portland, Oregon and Pacific City, Oregon. The small agency was founded in 2008. Their team specializes in Custom Software Development, UX/UI Design, Mobile App Development, and Web Development.
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Citycounty Insurance ServicesIndustries
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52$25,000+10 - 49 employeesArlington, VA3Advance, a mobile app development firm, is based in Arlington, Virginia and Austin, Texas. The small company was launched in 2010. Their services include Mobile App Development, Custom Software Development, Web Development, Artificial Intelligence, and more.Read More
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StartupsIndustries
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53$5,000+50 - 249 employeesNew York, NYEstablished in 2011, MOBIKASA is a web development firm. Their midsize team is headquartered in New York, New York; Los Angeles, California; New Delhi, India and Dubai, United Arab Emirates and offers Web Development, E-Commerce Development, and Custom Software Development.Read More
Clients
1800Flowers Perfumania Mielle Organics Fast Growing TreesIndustries
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54$25,000+250 - 999 employeesSan Francisco, CARobosoft Technologies Inc. Is a San Francisco, California-based app development company. They offer Mobile App Development, UX/UI Design, Web Development, Custom Software Development, and more and were launched in 1996.Read More
Clients
Warner Bros. Discovery HSBC McDonalds Mercury FinanceIndustries
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55$25,000+50 - 249 employeesBoston, MAHeadquartered in Boston, Massachusetts; Warsaw, Poland and Tbilisi, Georgia, SumatoSoft is a custom software development company. The midsize firm was established in 2012. Their team offers Custom Software Development, IoT development, Web Development, Mobile App Development, and more.Read More
Clients
The World Bank Beiersdorf Toyota Dexai RoboticsIndustries
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56$25,000+10 - 49 employeesWatford, EnglandRead More
AppDrawn is a software solutions company founded in 1999. Their headquarters are in London and they have a second office in Barcelona. Across these 2 locations, they have a team of a dozen staff that do custom software development, web development, and mobile app development for small and medium-size businesses.
Clients
AspireIndustries
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57$10,000+250 - 999 employeesMaryborough, AustraliaLaunched in 2012, ATEAM SOFT SOLUTIONS is a website development company. The firm specializes in Web Development, Mobile App Development, IT staff augmentation, Custom Software Development, and more and has a midsize team. The firm is in Maryborough, Australia; Albuquerque, New Mexico and Thiruvananthapuram, India.Read More
Clients
Blacksmith International, USAIndustries
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58$25,000+10 - 49 employeesNew York, NYSavas Labs is a small web development company founded in 2013. Their services include Web Development, Web Design, UX/UI Design, Custom Software Development, and more. The agency is located in New York, New York; San Francisco, California; Boston, Massachusetts and Washington, District of Columbia.Read More
Clients
Harvard University Environmental Defense Fund Adobe NPRIndustries
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59$10,000+50 - 249 employeesNew Delhi, IndiaSoftware development company TechnoYuga Soft Pvt. Ltd. Was founded in 2019. Their midsize team is located in New Delhi, India; Surat, India; Toronto, Canada and Orland Park, Illinois. TechnoYuga Soft Pvt. Ltd. Specializes in Custom Software Development, Mobile App Development, Artificial Intelligence, and UX/UI Design.Read More
Clients
Gfacility Akasha Air mfine DecathlonIndustries
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60$10,000+50 - 249 employeesNew York, NYThoughtbot, a web development firm, is located in New York, New York and London, England. They focus on Web Development, Mobile App Development, UX/UI Design, cloud consulting & SI, and more and were launched in 2003.Read More
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Health Match 360Industries
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