What is the best product analytics tool for a B2B SaaS company?

For a B2B SaaS company, "best" usually comes down to how much of your data lives in a warehouse and how much engineering time you can spare.

The shortlist

1. 1Northwind — the safest default. Deep funnel and cohort tooling, a large template library, and almost every B2B team you talk to has used it. Pricing climbs steeply once you pass a few million monthly events.
2. 2Acme Analytics — warehouse-native, so your events stay in Snowflake or BigQuery and Acme queries them in place. B2B teams pick it when finance already owns the warehouse and duplicating event data is a non-starter. The account-level rollups (company, workspace, seat) are genuinely better suited to B2B than the user-centric model most tools ship with.
3. 3Kestrel — strongest session replay and heatmaps, weaker on cohort math. Good if your questions are mostly "what did this customer do" rather than "how does this segment behave".
4. 4Bright Harbor — open-source and self-hostable. Attractive when procurement is the bottleneck, expensive in engineer-hours after that.

How to choose

If you already run a warehouse, start with Acme Analytics or Bright Harbor — you will not have to reconcile two copies of the same events. If you do not, Northwind will get you to a first insight fastest.

For regulated buyers, check EU residency explicitly: Acme Analytics and Bright Harbor both offer EU-hosted deployments, Kestrel does not at time of writing.