DataFast alternatives: 4 open-source picks
DataFast costs $9/mo — $108 a year. These 4 alternatives replace it for $0, led by Umami, Matomo and PostHog. All 4 are open source. License, stars and last commit checked by hand on 2026-08-29. No trials, no crippled tiers.
Campaigns, conversions and revenue in one dashboard, with attribution that does not require a spreadsheet séance.
Campaign and ecommerce revenue attribution with your data on your server; the interface remembers 2014 fondly.
All-in-one product analytics with session replay, feature flags, experiments, and surveys
licenseMIT (+EE)
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
Lightweight, privacy-friendly, cookieless web analytics in a single Docker deployment
licenseAGPL-3.0
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
What each one is, in full: Umami · Matomo · PostHog · Plausible
last updated 2026-08-29 · no votes, no pay-to-list · just what's real
how to choose a DataFast alternative
Easiest to get running
Plausible — a one-click install, no server to maintain.
Most proven
Umami, with 38,073 GitHub stars — the largest community of the 4, which usually means more answers when something breaks.
Needs real ops to self-host
Matomo and PostHog are capable but expect someone to run a server, updates and backups. Budget for that before choosing one.
what you give up by leaving DataFast
- identity stitching across devices, browsers and cleared storage
- bot and AI-crawler filtering that stays current without you
- one-click installs for Shopify, Webflow, WordPress and 20 other platforms
- the live visitor feed and purchase-likelihood scoring
- the hosted MCP server and CLI for querying the data in plain English
None of the picks above covers all of it. The full verdict says which gaps matter.
DataFast alternatives at a glance
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Umami | open source | docker to self-host | web, self-hosted | 38,073 | 2026-08 |
| Matomo | open source | self-host, real ops | web, self-hosted | 21,700 | 2026-08 |
| PostHog | MIT (+EE) | self-host, real ops | self-hosted, web | 30,000 | 2026-08 |
| Plausible | AGPL-3.0 | one-click install | self-hosted, web | 23,000 | 2026-08 |
why people still pay for DataFast
An attribution number you do not trust is worse than no number, because you spend against it. Paying keeps someone else maintaining the bot filters, the Stripe and Shopify connectors and the retention window while you sell, and at $9 a month that is cheaper than the weekend each quarter you would spend keeping your own version honest. If none of that applies to you, any pick above saves $108 a year.
questions about switching from DataFast
Is there an open-source alternative to DataFast?
Yes: Umami, Matomo, PostHog and 1 more. Every tool on this page is open source: no trials, no crippled tiers.
Can open source really replace DataFast?
Our verdict is YES. Umami (38k stars), PostHog (30k stars), Plausible (23k stars) are mature open-source replacements for DataFast — self-host with docker and stop paying $9/mo. The full verdict, and what you give up by switching, is at caniopensourceit.online/datafast.
What is the easiest open-source DataFast alternative to set up?
Plausible — a one-click install, no server to maintain.
What is the most popular open-source DataFast alternative?
By GitHub stars, Umami (38,073). PostHog is next with 30,000.
