Segment made it easy to collect events once and pipe them to dozens of marketing and analytics tools. It's still widely used, but the category around it has splintered: some teams now sync data out of a warehouse instead of collecting it centrally (reverse ETL), others just want to catch broken tracking before it ships, and others want a single live customer view rather than raw event streams. Depending on which piece of that job you actually need, one of these six real tools may fit better — and often cheaper — than a full CDP.
The short version
| Tool | What it actually does | Best for | Pricing |
|---|---|---|---|
| Hightouch | Reverse ETL: warehouse → CRM/marketing tools | Teams whose source of truth is already a data warehouse | Free (1 destination), paid tiers |
| Census | Reverse ETL & operational analytics | Syncing warehouse data to 60+ SaaS destinations | Free tier, paid for advanced features |
| Avo | Tracking-plan governance & data quality | Catching bad event data before release, not replacing collection | Free for 2 seats |
| Trackingplan | Automatic monitoring of analytics/marketing tags | Agencies and marketers needing tracking QA without code | Not public |
| Propane | Unified live customer file from 300+ tools | Product teams wanting one customer view instead of raw events | Quote-based, demo required |
| Keen IO | Kafka-based event streaming | Developers wanting raw real-time event infrastructure | 30-day trial, pricing unclear after |
Reverse ETL: sync your warehouse out, instead of collecting events centrally
Hightouch and Census both take the opposite approach from Segment: instead of collecting events centrally and fanning them out, they treat your data warehouse as the source of truth and sync fields from it into your CRM, support tool or ad platform. That's a meaningfully different architecture if your team already invested in a warehouse and dbt models — you stop duplicating logic in two places.
Hightouch's free tier covers one sync destination, with paid plans for more. Strengths: easy integration across many downstream tools and precise field-level targeting. Limits: costs climb fast once you need more than a couple of destinations, and the free tier is genuinely limited.
Census offers a free plan with no credit card required and syncs to 60+ SaaS destinations including Salesforce and Zendesk. Strengths: no-friction free tier and broad destination coverage. Limits: advanced features become paid quickly, and costs can add up if usage isn't monitored.
Data quality: catch broken tracking instead of just collecting more of it
Avo isn't a Segment replacement so much as insurance for whatever collection tool you use: it maintains a single source-of-truth tracking plan, a type-safe tracking library, and in-app debuggers that catch data issues before release. Free for two workspace members with a 1-hour data-observability lookback. Strengths: genuinely useful for teams tired of silently broken events. Limits: pricing above the free tier isn't clearly published, and it's a less well-known name than the CDPs it complements.
Trackingplan takes a similar quality-focused angle but automatically, monitoring analytics, marketing data and pixels for issues and keeping tracking plans up to date without requiring code changes — useful for agencies managing tracking across many client sites. Strengths: automatic monitoring and easy setup. Limits: pricing isn't public and detailed feature information is thin.
Beyond raw events: a unified customer view
Propane skips raw event collection entirely and instead pulls signals from 300+ tools your team already uses — support tickets, calls, billing, feedback — into one always-current customer file, including feeding that context directly to AI coding agents. It's SOC 2 Type II and GDPR compliant. Strengths: a genuinely unified view without manual surveys, and useful for teams already drowning in scattered customer context. Limits: pricing requires a sales demo, it's a young, thinly-funded startup versus established competitors, and the real value depends heavily on how good your existing integrations already are.
Raw infrastructure: build your own pipeline
Keen IO is the developer-first option: an Apache Kafka-based event streaming platform for teams that want real-time data collection infrastructure rather than a packaged CDP. Strengths: real-time streaming built on proven Kafka infrastructure, with a 30-day free trial. Limits: pricing transparency is a real weak point — plan carefully before committing, since costs after the trial aren't clearly published.
Which one should you actually pick?
If your team already centralizes data in a warehouse, Hightouch or Census replace Segment's fan-out role more cheaply. If your actual pain is broken or inconsistent tracking rather than distribution, Avo or Trackingplan solve that directly without replacing your collection layer. If what you really want is one live customer view instead of a river of raw events, look at Propane. And if you want to build custom real-time infrastructure yourself, Keen IO's Kafka foundation is the closest to a blank canvas. None of these is a drop-in Segment clone — each solves one piece of what Segment bundled together, usually better and cheaper for that specific piece.