RudderStack vs Amplitude

Self-host swap-in for Amplitude. · Self-host Amplitude · RudderStack on os-alt

RudderStack is one of the open-source self-host replacements for Amplitude — license AGPL-3.0, 30min docker-compose (rudder-server + Postgres + transformer + control plane) to stand up, and $15 vps for the server; storage is wherever you route events (bigquery / snowflake / your own postgres). Compare against Amplitude's Free tier up to 10M events/mo; Plus/Growth start at $49/mo and rise sharply with event volume below.

	RudderStackopen-source	Amplitudepaid SaaS
Category	Product analytics / event tracking / funnels	Product analytics / event tracking / funnels
License / pricing	`AGPL-3.0`	Free tier up to 10M events/mo; Plus/Growth start at $49/mo and rise sharply with event volume
Starting price	$0 self-host	$49/user/mo
GitHub	rudderlabs/rudder-server ★ 4.41k · last commit 1d agoalive	closed source
Setup time	30min docker-compose (rudder-server + Postgres + transformer + control plane)	SaaS — sign up + bill
Monthly cost	$15 VPS for the server; storage is wherever you route events (BigQuery / Snowflake / your own Postgres).	from $49/user/mo (Free tier up to 10M events/mo; Plus/Growth start at $49/mo and rise sharply with event volume)

Switching from Amplitude to RudderStack

RudderStack is shaped like a Segment / CDP — it ingests events and forwards them to destinations. To replace Amplitude: write a destination (or use the built-in Postgres / ClickHouse warehouse destination) and run analysis with Metabase or Superset on top. Amplitude SDKs swap to the RudderStack SDKs with similar APIs; backfill via Amplitude's Export API into your warehouse.

Good fit for: Teams that want a CDP shape — events fan out to many tools — and are happy doing analysis in a separate BI layer.
Weak at: Not an analytics tool by itself; you still need Metabase / Superset / a warehouse to do funnels. Higher overall stack count.
License note: AGPL on the OSS server; some downstream connectors are Elastic License v2.

Other open-source self-host alternatives to Amplitude

PostHog
MIT20min docker-compose (the official `hobby` deploy is one command)$20-40 VPS — ClickHouse + Postgres + Kafka + Redis + the app; demanding stack but absorbs serious event volume.
Plausible Analytics
AGPL-3.010min docker-compose (Elixir app + ClickHouse + Postgres)$10 VPS; ClickHouse is the heaviest piece but tiny at startup volumes.

In a terminal? npx os-alt amplitude prints Amplitude's self-host options — how the CLI works →

FAQ

Is RudderStack a free alternative to Amplitude?

Yes — RudderStack is open source under AGPL-3.0. Self-host cost: $15 VPS for the server; storage is wherever you route events (BigQuery / Snowflake / your own Postgres).. Amplitude starts at $49/user/mo (Free tier up to 10M events/mo; Plus/Growth start at $49/mo and rise sharply with event volume).

How long does RudderStack take to set up vs Amplitude?

Self-hosting RudderStack: 30min docker-compose (rudder-server + Postgres + transformer + control plane). Amplitude is a hosted SaaS — sign up and you're in.

What is RudderStack good at, and what is it weak at?

Good fit for: Teams that want a CDP shape — events fan out to many tools — and are happy doing analysis in a separate BI layer.. Weak at: Not an analytics tool by itself; you still need Metabase / Superset / a warehouse to do funnels. Higher overall stack count..