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Best API Integration Platforms in 2026

Connecting services through APIs often involves building repeatable workflows and deciding how those integrations will run. Compare custom connectors, reusable workflows, webhook triggers, and workflow-builder capabilities, as well as self-hosted deployment. Free-plan availability and included executions can be considered alongside paid-from pricing when assessing usage and cost. Knit, Apache NiFi, and Windmill are among the entries. Think about whether your integration work needs reusable processes, event-triggered workflows, or a self-hosted setup, then weigh those needs against the listed features.

37 apps
Research read 23 Sept 2026
How the order is worked out

1

Apache Camel

Free plan Open source APILinuxMac+2

Apache Camel combines broad connector and route options with integration and security capabilities. Check the Java requirements and LTS support window for the release you plan to use.

9.3 Free plan Visit site
2

Apache NiFi

Free plan Open source APILinuxMac+3

NiFi combines visual flow management with provenance tracking, flow controls, and a range of documented integrations.

9.3 Open source Visit site
3

Nango
by Nango
Free plan Open source APISelf-hostedWeb

Nango combines code-based integration development with authentication and runtime management. Its free limits and the absence of EU-hosted cloud may matter when assessing deployment needs.

8.7 Free plan · paid from $50/mo Visit site
4

Windmill

Free plan Open source APILinuxSelf-hosted+2

Windmill combines developer scripting with low-code workflow and app building, and supports self-hosting.

8.5 Free plan · paid from $120/mo · 30-day trial Visit site
5

GitHub CodeQL

Free plan ExtensionLinuxMac+3

7.5 Free plan · paid from $30/mo Visit site
6

Knit
by Knit
Free plan AndroidAPIiPhone+1

Knit brings together API-based integrations, workflow creation, and managed-auth MCP access.

7.3 Free plan · paid from $29/mo · 30-day trial Visit site
7

Celigo
by Celigo
Free plan Web

Choose Celigo if your team needs to connect a broad range of business systems and manage integrations through several build methods.

7.1 Free plan · 30-day trial Visit site
8

Google Cloud Application Integration

Free plan APIWeb

Application Integration combines visual workflow building, connectors, and REST APIs in a managed Google Cloud service.

7.1 Free plan · paid from $0.50 Visit site
9

TransportAPI

Free plan AndroidAPIiPhone+1

TransportAPI provides managed UK transport data services for journey planning, bus, and rail information. Check the daily allowance and available API formats against your intended use.

7.0 Free plan Visit site
10

Pipedream
by Pipedream
Free plan APIWeb

Pipedream brings workflow building, API integrations, and managed authentication into one service.

6.9 Visit site
11

Workato Agent Studio
by Workato Agent Studio
Free plan APIiPhoneLinux+3

Agent Studio offers configurable Genies, workflow actions, and security controls, with a free plan and a monthly Pro plan.

6.9 Free plan · paid from $75/mo Visit site
12

WrapAPI

Free plan APIExtensionSelf-hosted+1

Pick WrapAPI if you want a visual way to build APIs on top of existing websites, or need a listed self-hosted option.

6.9 Free plan Visit site
13

n8n
by n8n
Free plan Self-hosted

Choose n8n if you need flexible workflow automation with code support and a choice of deployment models.

6.8 Free plan · paid from €20/mo (annual) · 14-day trial Visit site
14

Superfeedr

Free plan APIWeb

Superfeedr covers feed publishing, consumption, and tracking through one API and hosted hubs. Review subscriber billing and hub pricing against the expected workload.

6.7 Free plan · paid from $2/mo Visit site
15

Azure Logic Apps
by Azure Logic Apps
Free trial APILinuxMac+3

Pick Azure Logic Apps if you need a broad integration platform with visual workflow design, extensive connectors, or hybrid deployment options.

6.5 Visit site
16

Boomi
by Boomi
Free trial APILinuxSelf-hosted+2

Boomi brings integration, automation, data, API, and B2B/EDI functions into one hybrid platform.

6.5 From $99/mo · 30-day trial Visit site
17

API2Cart

Free trial APISelf-hostedWeb

API2Cart centralizes connections to many commerce platforms through one API, with webhooks, SDK resources, and self-hosting options.

6.4 From $300/mo (annual) · 14-day trial Visit site
18

IBM App Connect

Free trial APILinuxSelf-hosted+2

App Connect covers visual integration design as well as toolkit-based development and multiple deployment settings. Review its plan units, local pricing and security configuration when assessing fit.

6.3 From $2,544 · 30-day trial Visit site
19

Jitterbit Harmony
by Jitterbit Harmony
Free trial APILinuxMac+3

Jitterbit Harmony lists hybrid deployment, orchestration, transformation, and real-time sync among its capabilities.

6.2 Pricing on request Visit site
20

Mule ESB
by Mule ESB
Free trial APISelf-hostedWeb

Anypoint Platform brings API development, integrations and automation into one offering with multiple deployment options.

6.1 From $2,000/mo (annual) · 30-day trial Visit site
21

Integry

Free trial APIWeb

Integry offers workflow tools, embedded interfaces, monitoring, and managed services for SaaS integrations.

6.0 Pricing on request Visit site
22

Paragon
by Paragon
Free trial APISelf-hostedWeb

Paragon brings data sync, integration actions, and workflow orchestration into one platform for AI and SaaS products.

5.9 Pricing on request · 14-day trial Visit site
23

SnapLogic
by SnapLogic
Free trial APILinuxMac+3

Consider SnapLogic if its listed integration capabilities and hybrid deployment model fit your environment.

5.9 Pricing on request Visit site
24

Alumio

Paid APIWeb

Alumio provides managed, visual integration workflows with broad connectivity and monitoring.

5.8 From €499/mo Visit site
25

Fedify

Free plan

5.8 Free plan Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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