Reverse ETL had three names everyone compared: Census, Hightouch, and Fivetran. Then the landscape changed under everyone's feet, because Fivetran acquired Census in 2025, collapsing two of the three into one.
Here's the honest current picture, not the one the old blog posts describe.
What reverse ETL tools do
They sync data out of your warehouse into the operational tools where it gets used: ad platforms, CRMs, email, support. If ETL fills the warehouse, reverse ETL is the activation layer that empties the useful parts back out.
For a GA4 BigQuery stack, this is how a segment you defined in SQL becomes a targetable audience in Meta or Google.
The 2025 shift
Census was the reverse ETL specialist and Hightouch's main rival. In May 2025 Fivetran, the big ingestion player, acquired Census to add reverse ETL and become an end-to-end data-movement platform.
So "Census vs Fivetran" isn't a matchup anymore, it's one company. The real choice today is Hightouch versus Fivetran-with-Census, plus the open-source option.
Side by side
| Hightouch | Fivetran (with Census) | RudderStack | |
|---|---|---|---|
| Focus | Activation / composable CDP | End-to-end: ingestion + reverse ETL | Open-source warehouse-native CDP |
| Strength | Visual audience builder, most destinations | One platform for data in and out | Ownership, self-hostable |
| Best for | Marketing activation from the warehouse | Teams standardizing on Fivetran | Developers who want to self-host |
Hightouch: the independent leader
Hightouch stayed independent and leaned into being a composable CDP, adding a visual audience builder so non-technical marketers can define segments without SQL. It supports the widest set of destinations, which is why it's the usual default when the warehouse is your source of truth.
Fivetran with Census: end to end
With Census inside it, Fivetran now moves data both directions in one platform. If you already use Fivetran for ingestion, adding its reverse ETL avoids a second vendor, which is the main reason to pick it.
RudderStack: the open-source option
RudderStack approaches it as a warehouse-native CDP with reverse ETL built in, and it's open source and self-hostable. It fits developer-led teams that want to own the stack rather than rent it.
What actually differs between them
Under the hood these tools do the same core job, so the differences are about who's meant to drive them. Hightouch pushes furthest toward the marketer, with a no-code audience builder that lets someone define a segment without writing a query. Fivetran-with-Census leans toward the data team already living in that platform. RudderStack assumes an engineer who's comfortable owning infrastructure.
Pricing follows the same split. The commercial tools bill on some mix of destinations and synced records, which is predictable but grows with usage; self-hosting RudderStack trades a licence fee for the cost of running it yourself. Neither is automatically cheaper, so price it against your own volume rather than the sticker.
How to choose
- Marketing needs self-serve audience activation: Hightouch.
- You already standardized on Fivetran for ingestion: Fivetran with Census.
- You want open source and to self-host: RudderStack.
Reverse ETL tools compared used to mean Census versus Hightouch versus Fivetran; after the 2025 acquisition it's really Hightouch versus Fivetran-with-Census, with RudderStack as the open-source pick. Choose by who activates the data and what you already run, and don't trust a comparison written before the deal.
Want a stronger data analyst role or a raise? Grab the FREE Product Analyst Playbook and get the exact roadmap to your next offer.
