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Automation Integration · head to head

RudderStack vs WSO2 API Manager

RudderStack logo

RudderStack

Automation Integration

The open-source customer data platform

From
Free
Rated
-
Full reviewWebsite
WSO2 API Manager logo

WSO2 API Manager

APIs

Complete API management platform for designing and managing APIs

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: RudderStack on the free plan data processing stops after a second consecutive overage rather than being billed, so exceeding 250,000 events twice breaks the pipeline; WSO2 API Manager the free open source distribution does not include a subscription to the WSO2 Update service, so continuous improvements and security patches require a paid subscription
  • They diverge on capability: RudderStack covers Data collection, WSO2 API Manager covers API Gateway.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which RudderStack and WSO2 API Manager actually diverge.

Attributes where RudderStack and WSO2 API Manager differ
AttributeRudderStackWSO2 API Manager
Pricing modelfreemiumopen-source
PlatformsWeb, Self-hostedJava, Linux, Docker, Kubernetes
CategoryAutomation IntegrationAPIs
Founded20182005

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in RudderStack

  • Data collection
  • Event tracking
  • Audience segmentation
  • Warehouse ingestion
  • Real-time sync
  • Data transformation
  • Privacy controls
  • 200+ destinations

Only in WSO2 API Manager

  • API Gateway
  • API Designer
  • Developer Portal
  • LDAP
  • Okta
  • Keycloak
  • Microservices
  • Java support

What people use each for

The jobs each tool is most often brought in to do.

RudderStack

  • Collecting event data from apps and websites and routing it to warehouses and toolsnot WSO2 API Manager
  • Building a warehouse first customer data pipelinenot WSO2 API Manager

WSO2 API Manager

  • Publishing, securing and rate limiting APIs behind a gatewaynot RudderStack
  • Running an API developer portal with subscription key managementnot RudderStack
  • Self hosting an open source API management layer on premisesnot RudderStack

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

RudderStack

  • On the free plan data processing stops after a second consecutive overage rather than being billed, so exceeding 250,000 events twice breaks the pipeline
  • The free plan allows 250,000 events a month
  • Growth starts at $265 a month for 1 million events, with volume sold in tiers up to 25 million
  • Overage is charged as the gap to the next tier's price rather than per event, so a small excess costs a full tier step

WSO2 API Manager

  • The free open source distribution does not include a subscription to the WSO2 Update service, so continuous improvements and security patches require a paid subscription
  • A commercial production licence is not part of the free download and comes only with a subscription
  • No subscription price is published; Basic Support and Enterprise Support both require contacting sales for a quote
  • 24x7x365 coverage requires Enterprise Support; the general query SLA is one business day
  • A Customer Success Manager is a paid optional add on covering business hours only
  • Consulting services and WSO2 Private Cloud hosting are quoted separately

Pricing, plan by plan

RudderStack

Free
  • FreeFree
    • 250K events per month
    • 16 SDK sources
    • 200+ cloud destinations
  • Growth$265/month
    • 1 million events per month (up to 25 million available)
    • Unlimited team members
    • Tracking plans
  • Enterprise$null/mo
    • 5-minute warehouse sync
    • Unlimited transformations
    • Access to Profiles & Data Apps

WSO2 API Manager

Free
  • CommunityFree
    • Core API management
    • Community support
  • Commercial$undefined/monthly
    • Enterprise features
    • Technical support
    • SLA

Which should you pick?

Choose RudderStack if

  • You need data collection.
  • You want to start without paying.
  • You work on Web, Self-hosted.
  • You also want event tracking.
RudderStack review

Choose WSO2 API Manager if

  • You need api gateway.
  • You want to start without paying.
  • You work on Java, Linux, Docker, Kubernetes.
  • You also want api designer.
WSO2 API Manager review

Questions people ask

Is RudderStack or WSO2 API Manager better?
Neither clearly leads. RudderStack starts at Free and WSO2 API Manager at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, RudderStack or WSO2 API Manager?
RudderStack starts at Free and WSO2 API Manager at Free.
Does RudderStack or WSO2 API Manager run on more platforms?
RudderStack runs on Web, Self-hosted. WSO2 API Manager runs on Java, Linux, Docker, Kubernetes.
Can I use RudderStack for free?
Both have a free tier, so you can try either at no cost before committing.
What is RudderStack best used for?
RudderStack is most often used for collecting event data from apps and websites and routing it to warehouses and tools, building a warehouse first customer data pipeline. Of those, collecting event data from apps and websites and routing it to warehouses and tools and building a warehouse first customer data pipeline are not what WSO2 API Manager is typically brought in for.
What can RudderStack do that WSO2 API Manager cannot?
RudderStack covers Data collection, Event tracking, Audience segmentation, Warehouse ingestion. WSO2 API Manager covers API Gateway, API Designer, Developer Portal, LDAP.

Answered from the vendors’ own pages

RudderStack: What is RudderStack's free plan limit?

RudderStack's free plan includes 250K events per month with 16 SDK sources, 200+ cloud destinations, warehouse destinations, and Reverse ETL at no cost.

Source
WSO2 API Manager: How is WSO2 API Manager priced?

WSO2 API Manager pricing is not published on their website. As an enterprise API management platform, pricing is custom-quoted based on deployment model and organizational requirements.

Source
RudderStack: How much does RudderStack Growth plan cost?

RudderStack Growth plan costs $265 per month with annual billing discount available, providing 1 million events per month (up to 25 million available), unlimited team members, and 2 workspaces.

Source
WSO2 API Manager: Does WSO2 API Manager offer different pricing for on-premises versus cloud deployments?

WSO2 API Manager supports multiple deployment options including on-premises and cloud, but pricing structures for different deployment models are not publicly disclosed.

Source
RudderStack: What happens if I exceed my RudderStack event limit?

On the free plan, data processing stops after your second consecutive overage. Paid plan customers face overage fees calculated as the difference between the next tier's pricing and their current plan.

Source
WSO2 API Manager: What deployment flexibility does WSO2 API Manager provide?

WSO2 API Manager enables flexible deployment on-premises or in cloud environments, but specific pricing tiers for each deployment model require contacting WSO2 sales.

Source
WSO2 API Manager: How would I request a WSO2 API Manager pricing quote?

Organizations can request pricing quotes by contacting WSO2 sales through their website. Custom quotes depend on API volume, deployment model, and feature requirements.

Source
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