What is Jitsu used for?

Jitsu is an open-source, MIT-licensed event data platform that collects events from sites, apps and servers and delivers them to warehouses, as a Segment alternative. It is a good fit for replacing Segment with a self-hosted pipeline, streaming product events into a warehouse and enriching events before delivery.

Is Jitsu open source?

Yes. Jitsu is open source under the MIT licence. Its source code is on GitHub at jitsucom/jitsu and is written mainly in TypeScript.

Yes. Jitsu is open source, so the software itself is free to use. A managed cloud version is also available.

Can I self-host Jitsu?

Yes. Jitsu can be self-hosted on your own server or infrastructure.

What is Jitsu an alternative to?

Jitsu is an open-source alternative to Segment, mParticle, Tealium and BlueConic. Other open-source alternatives to Segment include RudderStack, Trench and Snowplow.

Is Jitsu actively maintained?

Yes. The most recent commit to Jitsu was on 2 October 2026. The project has 5.1k stars on GitHub.

Jitsu: open-source alternative to Segment, mParticle

About Jitsu

Jitsu is an open-source event data platform that collects events from websites, apps and servers and delivers them to a data warehouse and other tools. It covers similar ground to Segment, and because it is MIT-licensed and self-hostable the whole pipeline can run on your own infrastructure or on the hosted Jitsu Cloud.

Events are collected through SDKs, an HTTP API or a drop-in Segment proxy, then delivered to destinations such as ClickHouse, BigQuery, Snowflake, Redshift, Postgres, S3 and GCS, streamed or in micro-batches depending on the destination. Functions written in JavaScript run on each event to filter, transform and enrich it, and can be written in the browser or deployed from your own repository with the Jitsu CLI. Connector syncs pull data from third-party sources using Airbyte-compatible connectors.

According to the README, batches can land as often as every minute, whereas Segment loads warehouses once or twice a day. Jitsu Cloud bills by event volume rather than monthly tracked users, and self-hosting carries no usage billing. The code is written in TypeScript and Go, and an MCP server is available.

Key features

Event collection via SDKs and HTTP API
Drop-in Segment proxy
Delivery to warehouses like BigQuery and Snowflake
JavaScript functions to transform events
Airbyte-compatible connector syncs
CLI for building and deploying functions
User identity graph

Good fit for

→Replacing Segment with a self-hosted pipeline
→Streaming product events into a warehouse
→Enriching events before delivery

Built with: TypeScript; ClickHouse; Go; PostgreSQL
Tags: event-tracking; data-pipeline; segment-alternative; analytics; clickhouse; bigquery; snowflake; etl; self-hosted

Jitsu: questions and answers

What is Jitsu used for?: Jitsu is an open-source, MIT-licensed event data platform that collects events from sites, apps and servers and delivers them to warehouses, as a Segment alternative. It is a good fit for replacing Segment with a self-hosted pipeline, streaming product events into a warehouse and enriching events before delivery.
Is Jitsu open source?: Yes. Jitsu is open source under the MIT licence. Its source code is on GitHub at jitsucom/jitsu and is written mainly in TypeScript.
Is Jitsu free?: Yes. Jitsu is open source, so the software itself is free to use. A managed cloud version is also available.
Can I self-host Jitsu?: Yes. Jitsu can be self-hosted on your own server or infrastructure.
What is Jitsu an alternative to?: Jitsu is an open-source alternative to Segment, mParticle, Tealium and BlueConic. Other open-source alternatives to Segment include RudderStack, Trench and Snowplow.
Is Jitsu actively maintained?: Yes. The most recent commit to Jitsu was on 2 October 2026. The project has 5.1k stars on GitHub.