Can I open-source DataFast?
YES · mature open-source replacementYes. 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.
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.
xidentity stitching across devices, browsers and cleared storage
xbot and AI-crawler filtering that stays current without you
xone-click installs for Shopify, Webflow, WordPress and 20 other platforms
xthe live visitor feed and purchase-likelihood scoring
xthe hosted MCP server and CLI for querying the data in plain English
These projects already replace it, free.
UUmamiCampaigns, conversions and revenue in one dashboard, with attribution that does not require a spreadsheet séance.open source↗MMatomoCampaign and ecommerce revenue attribution with your data on your server; the interface remembers 2014 fondly.open source↗PPostHogAll-in-one product analytics with session replay, feature flags, experiments, and surveysopen source↗What each one is, in full: Umami · Matomo · PostHog
all 4 open-source alternatives to DataFast →· no votes, no pay-to-list · just what's real
DataFast pricing
| plan | monthly | annual (per mo) | what you get |
|---|---|---|---|
| starter | — | $9/workspace | Base shown: 10,000 events/month, 1 website, 1 team member, 3-year retention; selectable event caps from 10k through 10M+ |
| growth | — | $19/workspace | Base shown: 10,000 events/month, 30 websites, 30 team members, 5+ years retention; selectable event caps from 10k through 10M+ |
free tierno free tier
billingmonthly + yearly (yearly gives 2 months free); 14-day no-card trial
hidden costsEvery pageview, payment event, trial signup and custom goal counts equally, aggregated across all sites. At 75% usage DataFast warns; above 100% it locks the dashboard until you upgrade, while continuing to collect events.
verified 2026-08-12 · source ↗
Can I open-source DataFast?
Yes. Umami replaces DataFast today — self-host it on your own server or machine with no subscription. The full list of open-source alternatives is on this page.
How much does DataFast cost?
DataFast costs about $9/month (Starter, checked 2026-08-02), which is $108 per year. That's what you save by replacing it with open source.
What do I lose by replacing DataFast?
Honestly: 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. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to DataFast?
Yes: Umami (Campaigns, conversions and revenue in one dashboard, with attribution that does not require a spreadsheet séance.) Matomo (Campaign and ecommerce revenue attribution with your data on your server; the interface remembers 2014 fondly.) PostHog (All-in-one product analytics with session replay, feature flags, experiments, and surveys) All 4 curated open-source alternatives are at caniopensourceit.online/datafast/alternatives.