Softwr

Developer Tools · head to head

Jitsu vs PartyKit

Jitsu logo

Jitsu

Developer Tools

Open source event pipeline that streams behavioural data to your own warehouse

From
Free
Rated
-
Full reviewWebsite
P

PartyKit

Developer Tools

Platform for building and deploying realtime multiplayer servers on the edge

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Jitsu jitsu is a pipeline, not a customer data platform, so identity resolution, audience building and reverse ETL are absent and a marketing team expecting Segment parity will be disappointed.; PartyKit documentation and FAQ material on the marketing site is sparse compared to larger realtime platforms.
  • They diverge on capability: Jitsu covers Event collection, PartyKit covers Stateful edge servers.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Jitsu and PartyKit actually diverge.

Attributes where Jitsu and PartyKit differ
AttributeJitsuPartyKit
Pricing modelPer month by event volumefreemium
PlatformsWeb, Linux, Docker, Kubernetes, iOS, Androidweb, api

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

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 Jitsu

  • Event collection
  • Warehouse destinations
  • Connector syncs
  • Transformations
  • Bundled ClickHouse
  • Event debugger
  • Self-hosting

Only in PartyKit

  • Stateful edge servers
  • WebSocket-first API
  • CRDT library compatibility
  • Framework integrations
  • Global edge deployment

Both cover

  • Custom domains

What people use each for

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

Jitsu

  • A team paying five figures a year to a customer data platform when all it actually does is send events to Snowflakenot PartyKit
  • An engineering group that needs event collection running inside its own VPC for data residency or security review reasonsnot PartyKit
  • A product analytics setup that wants raw events in the warehouse as the source of truth rather than trapped in a vendor toolnot PartyKit
  • A startup that needs first-party event collection on its own domain to reduce loss from tracker blocking without paying CDP pricesnot PartyKit

PartyKit

  • Multiplayer collaborative appsnot Jitsu
  • Realtime AI agent backendsnot Jitsu
  • Live cursors and presencenot Jitsu
  • Collaborative whiteboards and documentsnot Jitsu

Where each one falls short

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

Jitsu

  • Jitsu is a pipeline, not a customer data platform, so identity resolution, audience building and reverse ETL are absent and a marketing team expecting Segment parity will be disappointed.
  • Connector sync frequency is deliberately tiered, with the free plan limited to manual runs and one daily sync, so anything approaching operational freshness requires the paid plan or self-hosting.
  • Self-hosting means you own the reliability of a system that drops data silently when misconfigured, and event loss is uniquely hard to notice because nothing errors, the numbers are just quietly lower.
  • The connector catalogue is far smaller than Fivetran or Airbyte, so if your requirement is pulling from many SaaS sources rather than pushing events, Jitsu is the wrong half of the problem.
  • It is a small company with a small commercial team, so enterprise procurement processes around security review, contractual SLAs and support escalation take longer than with an incumbent vendor.

PartyKit

  • Documentation and FAQ material on the marketing site is sparse compared to larger realtime platforms.
  • Commercial free tier requires deploying to the user's own Cloudflare account, adding setup complexity.
  • Storage on the free Individual plan clears every 24 hours, limiting it to prototyping rather than persistent production data.
  • Smaller ecosystem and community than more established realtime infrastructure providers.

Pricing, plan by plan

Jitsu

Free
  • Open SourceFree
    • MIT licence
    • Self-host on any cloud
    • No usage limits
  • Cloud FreeFree
    • Unlimited captured events
    • 200,000 active events per month
    • Manual connector runs only
  • Business$99/month
    • 2,000,000 active events per month
    • $40 per additional million events
    • Hourly connector sync frequency
  • Enterprise$undefined/year
    • Custom event volume
    • One minute sync frequency
    • Unlimited active syncs

PartyKit

Free
  • IndividualFree
    • Up to 10 live projects
    • Deploy to the global edge platform
    • Storage clears every 24 hours
  • CommercialFree
    • Unlimited projects
    • Custom domains
    • Runs on your own Cloudflare account; pay only Cloudflare usage

Which should you pick?

Choose Jitsu if

  • You need event collection.
  • You want to start without paying.
  • You work on Web, Linux, Docker, Kubernetes, iOS, Android.
  • You also want warehouse destinations.
Jitsu review

Choose PartyKit if

  • You need stateful edge servers.
  • You want to start without paying.
  • You work on web, api.
  • You also want websocket-first api.
PartyKit review

Questions people ask

Is Jitsu or PartyKit better?
Neither clearly leads. Jitsu starts at Free and PartyKit at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Jitsu or PartyKit?
Jitsu starts at Free and PartyKit at Free.
Does Jitsu or PartyKit run on more platforms?
Jitsu runs on Web, Linux, Docker, Kubernetes, iOS, Android. PartyKit runs on web, api.
Can I use Jitsu for free?
Both have a free tier, so you can try either at no cost before committing.
What is Jitsu best used for?
Jitsu is most often used for a team paying five figures a year to a customer data platform when all it actually does is send events to snowflake, an engineering group that needs event collection running inside its own vpc for data residency or security review reasons, a product analytics setup that wants raw events in the warehouse as the source of truth rather than trapped in a vendor tool, a startup that needs first-party event collection on its own domain to reduce loss from tracker blocking without paying cdp prices. Of those, a team paying five figures a year to a customer data platform when all it actually does is send events to snowflake and an engineering group that needs event collection running inside its own vpc for data residency or security review reasons are not what PartyKit is typically brought in for.
What can Jitsu do that PartyKit cannot?
Jitsu covers Event collection, Warehouse destinations, Connector syncs, Transformations. PartyKit covers Stateful edge servers, WebSocket-first API, CRDT library compatibility, Framework integrations. Both handle Custom domains.

Answered from the vendors’ own pages

Jitsu: Is Jitsu the same as Jitsi?

No. Jitsu is an open source event data pipeline. Jitsi is an unrelated video conferencing project.

PartyKit: How much does PartyKit cost?

PartyKit is completely free. Both the Individual and Commercial plans have no upfront costs.

Source
Jitsu: Can I self-host for free?

Yes. The project is MIT licensed with no usage limits when self-hosted.

PartyKit: What is PartyKit's Individual plan?

The Individual plan is free and includes deployment to a global edge platform, support for up to 10 live projects, and is suitable for small projects. Storage is cleared every 24 hours.

Source
Jitsu: How does the cost compare with Segment?

The Business plan is 99 US dollars a month for two million active events, where a per-tracked-user CDP typically costs orders of magnitude more at comparable volume.

PartyKit: What is PartyKit's Commercial plan?

The Commercial plan is free but requires deploying to your own Cloudflare account. It includes custom domains, unlimited projects, and you pay only your Cloudflare usage costs.

Source
Jitsu: Does Jitsu do identity resolution?

No. It transports and transforms events; identity stitching and audiences are not part of the product.

PartyKit: Can I upgrade from Individual to Commercial plan?

Yes, both plans are free but offer different feature sets. The Commercial plan removes project restrictions but requires managing your own Cloudflare infrastructure.

Source
Share

Related pages

More on Jitsu

More on PartyKit

Keep looking

Other head to heads