FullStory vs Mixpanel

Self-host either: open-source alternatives compared. · Category: observability & analytics

Both FullStory and Mixpanel are in the observability & analytics category. PostHog self-hosts as a replacement for both — listed below alongside the picks unique to each.

	FullStory	Mixpanel
Category	Session replay + product analytics	Product analytics
SaaS pricing anchor	Custom pricing — typically $200-400/mo for small SMB; rises to thousands at scale	Free up to 1M events/mo; Growth from $20/mo and scales fast
Self-host options listed	3	3

Replaces both — 1 shared open-source pick

These open-source projects appear on both /fullstory/ and /mixpanel/ — picking one solves the migration off either SaaS.

PostHog PostHog/posthogalivereplaces both

GitHub: ★ 34.5k · last commit today
License: MIT
Setup time: 20min docker-compose (`hobby` deploy is one command)
Monthly cost: $20-40 VPS — ClickHouse + Postgres + Kafka + Redis stack.

Picks unique to each

FullStory only

OpenReplayalive
Elastic-2.01h docker-compose or k8s (multi-service: backend + Postgres + Redis + ClickHouse + MinIO)$30-80/mo VPS — ClickHouse + MinIO for session blobs are the cost line.
RRWeb (DIY)alive
MIT2h — script install + ingest endpoint + storage + replay UI$5+ VPS plus storage — variable based on traffic.

Mixpanel only

Plausiblealive
AGPL-3.015min docker-compose$5 VPS for a typical small site.
Countlyalive
AGPL-3.030min (their installer or docker-compose)$10 VPS — Mongo-backed, plan for 4GB RAM.

In a terminal? npx os-alt fullstory or npx os-alt mixpanel prints either side — how the CLI works →

FAQ

Which open-source self-host alternatives replace both FullStory and Mixpanel?

1 open-source project appears on both /fullstory/ and /mixpanel/: PostHog.

How many self-host alternatives are listed for FullStory and Mixpanel?

3 for FullStory, 3 for Mixpanel.

Are all the self-host alternatives free?

Yes — every listed option is open source. Your cost is the VPS or hardware that runs it.