Best API Integration Platforms in 2026
33 api integration platforms ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
33ranked
9free plans on this page
€20/molowest paid tier
2 Oct 2026last checked
#1 Celigo Top pick · 8.8 Free plan · Free
#2 Windmill Runner-up · 8.8 Free plan · $120/mo
#3 n8n Also great · 8.2 Free plan · €20/mo
- Free planFree trial Web
- Free plan
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free planFree trial apiLinuxself-hostedWebWindows
- Free plan
- Yes
- Paid from
- 120 /mo
- Workflow builder
- hybrid
- Self-hosted deployment
- Yes
- Custom connectors
- Yes
- Webhook triggers
- Yes
RecognisedDocumentedPlatformsFree planFree trial$120/mofirst paid tier About WindmillVisit site - Free plan self-hosted
- Free plan
- Yes
- Webhook triggers
- Yes
RecognisedDocumentedPlatformsFree planFree trial€20/mofirst paid tier About n8nVisit site - Free planFree trial apiWeb
- Free plan
- Yes
- Workflow builder
- visual
- Self-hosted deployment
- No
- Custom connectors
- Yes
- Webhook triggers
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free planFree trial AndroidapiiOSWeb
- Free plan
- Yes
- Paid from
- 29 /mo
- Workflow builder
- code
- Custom connectors
- Yes
- Webhook triggers
- Yes
RecognisedDocumentedPlatformsFree planFree trial$29/mofirst paid tier About KnitVisit site - Free plan LinuxWindowsmacOS
- Free plan
- Yes
RecognisedDocumentedPlatformsFree planFree trial - WebWindowsLinuxRecognisedDocumentedPlatformsFree planFree trial
- Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 50 /mo
- Workflow builder
- code
- Self-hosted deployment
- Yes
- Custom connectors
- Yes
- Webhook triggers
- Yes
RecognisedDocumentedPlatformsFree planFree trial$50/mofirst paid tier About NangoVisit site - WebRecognisedDocumentedPlatformsFree planFree trial
- Web
- Free plan
- No
RecognisedDocumentedPlatformsFree planFree trial - Web
- Free plan
- No
RecognisedDocumentedPlatformsFree planFree trial - Free plan apiWeb
- Free plan
- Yes
- Paid from
- 75 /mo
RecognisedDocumentedPlatformsFree planFree trial$75/mofirst paid tier About Workato Agent StudioVisit site - WebRecognisedDocumentedPlatformsFree planFree trial
- Free trial apiself-hostedWeb
- Free plan
- No
- Paid from
- 99 /mo
RecognisedDocumentedPlatformsFree planFree trial$99/mofirst paid tier About BoomiVisit site - Free plan extensionLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Paid from
- 30 /mo
RecognisedDocumentedPlatformsFree planFree trial$30/mofirst paid tier About GitHub CodeQLVisit site - RecognisedDocumentedPlatformsFree planFree trial
- Free trialRecognisedDocumentedPlatformsFree planFree trial$212/mofirst paid tier About IBM App ConnectVisit site
- Web
- Free plan
- No
RecognisedDocumentedPlatformsFree planFree trial - Web
- Free plan
- No
RecognisedDocumentedPlatformsFree planFree trial - Web
- Free plan
- No
- Workflow builder
- hybrid
- Custom connectors
- Yes
- Webhook triggers
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Web
- Free plan
- No
RecognisedDocumentedPlatformsFree planFree trial - Web
- Free plan
- No
RecognisedDocumentedPlatformsFree planFree trial - WebmacOS
- Free plan
- No
- Paid from
- 499 /mo
- Workflow builder
- code
- Self-hosted deployment
- No
- Webhook triggers
- Yes
RecognisedDocumentedPlatformsFree planFree trial$499/mofirst paid tier About PandiumVisit site - WebWindowsmacOSLinux
- Workflow builder
- visual
- Self-hosted deployment
- Yes
- Webhook triggers
- Yes
RecognisedDocumentedPlatformsFree planFree trial - WebRecognisedDocumentedPlatformsFree planFree trial
Is your tool 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 Specifiction?
Celigo is ranked #1 of 33 with a score of 8.8. Windmill is second and n8n third.
How many of these have a free plan?
9 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, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing. Paid placements never change a rank.
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