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🏆 Top 10 API Development & Integration Agencies

Ranked by rating, verified review count, and track record. Updated for 2026.

# Agency Rating Team Size
1 Sapient Industries Mobile — 200+ people View
2 Clarifai — 51–200 people View
3 Mobius Labs — 11–50 people View
4 AI21 Studio — 51–200 people View
5 BridgeExperts — 51–200 people View
6 ConnectTech — 2–10 people View
7 FuseDev — 2–10 people View
8 BindExperts — 2–10 people View
9 SyncDev — 11–50 people View
10 GatewayDev — 2–10 people View
1
S

Sapient Industries Mobile ✓ Verified

Mobile transformation practice within Publicis Sapient for enterprise mobile strategies.

📍 New York, US 👥 200+ people 💰 From $75k
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2
C

Clarifai ✓ Verified

AI platform specialising in computer vision and natural language processing APIs.

📍 New York, US 👥 51–200 people 💰 From $30k
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3
M

Mobius Labs ✓ Verified

AI startup building efficient visual intelligence APIs for enterprise applications.

📍 Berlin, DE 👥 11–50 people 💰 From €25k
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4
A

AI21 Studio ✓ Verified

AI language model company offering APIs and development services for NLP applications.

📍 Tel Aviv, IL 👥 51–200 people 💰 From $25k
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5
B

BridgeExperts

API-first product development enabling seamless partner ecosystems and third-party integrations.

📍 Kawasaki, JP 👥 51–200 people 💰 From $10k
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6
C

ConnectTech ✓ Verified

REST and GraphQL API specialists building developer-friendly, well-documented integration layers.

📍 Santa Fe, AR 👥 2–10 people 💰 From $15k
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7
F

FuseDev

Legacy system modernisation through API wrapping, strangler pattern, and event-driven architecture.

📍 Fukuoka, JP 👥 2–10 people 💰 From $20k
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8
B

BindExperts

Payment, logistics, and marketplace API integration for ecommerce and fintech platforms.

📍 Warsaw, PL 👥 2–10 people 💰 From $25k
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9
S

SyncDev

Payment, logistics, and marketplace API integration for ecommerce and fintech platforms.

📍 Klagenfurt, AT 👥 11–50 people 💰 From $5k
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10
G

GatewayDev

iPaaS and middleware integration experts — MuleSoft, Azure Integration Services, and custom connectors.

📍 Cambridge, GB 👥 2–10 people 💰 From $50k
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Best API Development & Integration agencies by country

India (9) United States (7) United Kingdom (4) Argentina (3) Australia (3) France (3)
🌍 Best API Development & Integration Agencies Worldwide 📖 How to Hire a API Development & Integration Agency 📂 Browse All API Development & Integration Agencies

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