Windmill suits teams building internal tools and workflows, from developers who want to script in several languages to teams using low-code builders.
Free plan Free trial Open source From $120 a month WebWindowsLinuxAPISelf-hosted
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Best API Integration Platforms 2026
When you need systems to exchange data or trigger work, API integration platforms offer different building blocks to compare. Custom connectors, reusable workflows and webhook triggers speak to how integrations can be assembled; the workflow builder and self-hosted deployment add further distinctions. Check included executions and free-plan availability alongside the paid starting price to understand the usage and cost details shown. Knit, Celigo and Nango are among the entries, as are Workato Agent Studio and Google Cloud Application Integration. Consider whether you need to create workflows, reuse them, or manage deployment yourself, and use the published criteria to assess which capabilities align with your integration work.
02
Knit
AndroidiPhone & iPadWeb+1 Record6.0 Visit
03
Workato Agent Studio
It suits organizations that want to configure AI agents without code and connect them to workplace systems.
iPhone & iPadWebWindows+3 Record5.9 Visit
04
GitHub CodeQL
CodeQL suits developers and security researchers who need to analyze code for security and other quality issues.
WebWindowsMac+3 Record5.7 Visit
05
Apache NiFi
NiFi suits teams automating data flows across systems, including cybersecurity, observability, event stream, and generative AI pipelines.
WebWindowsMac+3 Record5.6 Visit
6
Azure Logic Apps
WebWindowsMac+3 — Record5.5 Visit Logic Apps suits organizations automating integrations across cloud and on-premises systems, especially those needing many connectors, B2B formats, or hybrid deployment.
7
Nango
WebAPISelf-hosted Free plan Record5.5 Visit Nango is aimed at developers building integrations for products or AI agents who want code-based workflows and managed authentication or sync infrastructure.
8
Apache Camel
WindowsMacLinux+2 Free plan Record5.4 Visit Apache Camel suits developers and teams integrating applications, APIs, and data across cloud and on-premises systems.
9
TransportAPI
AndroidiPhone & iPadWeb+1 Free plan Record5.3 Visit It suits developers and organizations building transport apps or websites, as well as users working with transport analytics or data mining.
10
Superfeedr
WebAPI $2 a month Record5.1 Visit Superfeedr is intended for web-protocol-aware developers building feed publishers, subscribers, or keyword trackers.
12
Celigo
Web Free plan Record5.0 Visit Celigo suits teams connecting business applications and automating workflows across apps, marketplaces, ERPs, and trading partners.
16
Pipedream
WebAPI $99 a month, billed yearly Record4.8 Visit Pipedream suits teams connecting services for AI agents or building automated workflows with code or drag-and-drop tools.
18
Google Cloud Application Integration
WebAPI Free plan Record4.6 Visit It suits enterprise architects, integration developers, and business analysts connecting business systems.
19
Jitterbit Harmony
WebWindowsMac+3 — Record4.5 Visit Harmony may suit organizations connecting cloud, on-premises, and legacy systems that need orchestration or API management.
22
WrapAPI
WebBrowser extensionAPI+1 Free plan Record4.4 Visit It suits developers and teams turning website or application requests into reusable APIs.
24
Oracle Integration
WebAPI — Record4.0 Visit Oracle Integration suits organizations connecting cloud and on-premises systems, coordinating workflows, managing APIs, or handling healthcare data.
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