Best API Integration Platforms in 2026
Updated
In short: Windmill is ranked #1 of 33 as of 2 October 2026, ahead of Google Cloud Application Integration and Nango. The best-ranked option with a free plan is Google Cloud Application Integration. The lowest first paid tier on this page is n8n at €20/mo.
If your stack spans multiple services, an API integration platform can help you build and coordinate the connections between them. Compare the workflow builder and reusable workflows, then check whether webhook triggers and custom connectors cover the integrations you need. Self-hosted deployment is another point to weigh when deployment control matters. The comparison also includes free-plan availability, included executions, and paid-from pricing, so you can consider cost alongside the work each platform supports. Windmill, Google Cloud Application Integration, and Nango are among the first entries, followed by Knit and Workato Agent Studio. Use the listed criteria to narrow options around your workflow, integration, and deployment requirements.
33 API integration platforms ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Workflow builder | |
|---|---|---|---|---|---|---|---|---|
| 1 | Windmill | 8.6 | RecognisedAPIDocumented | $120/mo | Yes | 120 /mo | hybrid | View |
| 2 | Google Cloud Application Integration | 8.3 | RecognisedAPIDocumented | Free | Yes | — | visual | View |
| 3 | Nango | 8.1 | RecognisedAPIDocumented | $50/mo | Yes | 50 /mo | code | View |
| 4 | Knit | 7.7 | RecognisedAPIDocumented | — | Yes | 29 /mo | code | View |
| 5 |  Workato Agent Studio | 7.6 | RecognisedAPIDocumented | $75/mo | Yes | 75 /mo | — | View |
| 6 | n8n | 7.5 | RecognisedAPIDocumented | €20/mo | Yes | — | — | View |
| 7 | Celigo | 7.5 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 8 | Boomi | 7.1 | RecognisedAPIDocumented | $99/mo | No | 99 /mo | — | View |
| 9 | Apache Camel | 6.9 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 10 | SnapLogic | 6.5 | RecognisedAPIDocumented | — | — | — | — | View |
| 11 | Jitterbit Harmony | 6.5 | RecognisedAPIDocumented | — | — | — | — | View |
| 12 | Azure Logic Apps | 6.4 | RecognisedAPIDocumented | — | — | — | — | View |
| 13 | elastic.io | 6.3 | RecognisedAPIDocumented | — | No | — | — | View |
| 14 | Oracle Integration | 6.3 | RecognisedAPIDocumented | — | — | — | — | View |
| 15 |  Frends | 6.2 | RecognisedAPIDocumented | — | No | — | — | View |
| 16 | IBM App Connect | 5.9 | RecognisedAPIDocumented | $212/mo | — | — | — | View |
| 17 | Prismatic | 5.8 | RecognisedAPIDocumented | — | No | — | — | View |
| 18 | Integry | 5.7 | RecognisedAPIDocumented | — | No | — | hybrid | View |
| 19 | Paragon | 5.7 | RecognisedAPIDocumented | — | No | — | — | View |
| 20 |  Pipedream | 5.6 | RecognisedAPIDocumented | — | — | — | — | View |
| 21 | Tray.ai | 5.6 | RecognisedAPIDocumented | — | No | — | — | View |
| 22 | GitHub CodeQL | 5.6 | RecognisedAPIDocumented | $30/mo | Yes | 30 /mo | — | View |
| 23 | Cyclr | 5.5 | RecognisedAPIDocumented | — | No | — | — | View |
| 24 |  Mule ESB | 5.4 | RecognisedAPIDocumented | $2,000/mo | No | 2,000 /mo | hybrid | View |
| 25 |  WrapAPI | 5.4 | RecognisedAPIDocumented | — | Yes | — | visual | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which API integration platform is ranked first on Inferse?
Windmill is ranked #1 of 33 with a score of 8.6. Google Cloud Application Integration is second and Nango third.
How many of these have a free plan?
7 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, n8n has the lowest first paid tier we found: €20/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.