# jitsucom/jitsu

Jitsu is an open-source Segment alternative. Fully-scriptable data ingestion engine for modern data teams. Set-up a real-time data pipeline in minutes, not days

Repository: https://github.com/jitsucom/jitsu
Canonical: https://ross.abutalabs.com/products/jitsu
Homepage: https://jitsu.com
Language: TypeScript
License: MIT
License Family: permissive
Topics: data-integration, clickhouse, golang, bigquery, data-collection, data-connectors, redshift, snowflake, postgres
Last push: 2026-08-26T16:31:59+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 92, longevity 100
- inputs: {"age_days": 2220, "days_push": 7, "days_rel": 55, "gap_med": 23, "n_releases_24m": 12}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5043, forks 395 (observed 2026-08-28T04:09:08.867174+00:00)

## What it is
Jitsu is an open-source, self-hostable event data platform and Segment alternative that collects event data from websites, apps, and servers and delivers it to data warehouses like ClickHouse, BigQuery, Snowflake, and Redshift in real time. It supports JavaScript transformation functions, identity stitching, deduplication, automatic schema management, and an MCP server, deployable via Kubernetes or Jitsu Cloud.

## Use cases
- collect website and app event data into a data warehouse in real time
- self-host a Segment alternative to avoid vendor lock-in and usage billing
- stream user behavioral events to ClickHouse with sub-second delivery
- transform, filter, and enrich events with JavaScript functions before delivery
- stitch anonymous and identified user identities automatically
- replace Google Analytics-style tracking with warehouse-first event collection
- deduplicate and buffer events during warehouse downtime

## When to choose
- you want an MIT-licensed, self-hostable Segment/CDP alternative
- you need real-time or micro-batch delivery to warehouses instead of daily batch loads
- you want event transformations via JavaScript functions with persistent storage and HTTP fetch
- your stack targets ClickHouse, BigQuery, Snowflake, Redshift, Postgres, or S3
- you need identity stitching and deduplication without writing SQL

## When to avoid
- you only need batch ELT from SaaS APIs rather than event streaming
- you cannot run Kubernetes, since the feature-complete deployment requires a cluster
- you need a fully managed solution and don't want any infrastructure to operate (though Jitsu Cloud exists)
- you need deep prebuilt BI dashboards rather than raw event delivery to a warehouse

## Facets
- artifact type: service
- maturity: active
- function: etl, streaming, webhook, api-framework, self-hosted, analytics
- domain: analytics, big-data, databases, web-development, self-hosted
- platform: self-hosted, cloud, go
- tags: customer-data-platform, segment-alternative, event-tracking, data-pipeline, clickhouse, data-warehouse, event-collection, cdp, data-engineering, docker, kubernetes, web-server, nodejs

## Member repositories
- jitsucom/jitsu (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:08.867174+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:17:23.431600+00:00, confidence not recorded.
  - readme: https://github.com/jitsucom/jitsu (fetched 2026-08-28T04:09:08.867174+00:00, sha 5826108c2728)
  - homepage: https://jitsu.com (fetched 2026-08-29T08:58:16.480648+00:00, sha fd5bd1c7692b)
  - site_page: https://jitsu.com/docs (fetched 2026-08-29T08:58:16.489905+00:00, sha 954210c6eef6)
  - site_page: https://jitsu.com/docs/sending-data (fetched 2026-08-29T08:58:16.493550+00:00, sha 3fd4c72d1f7a)
  - site_page: https://jitsu.com/features/event-streaming (fetched 2026-08-29T08:58:16.495062+00:00, sha 795006ae8365)
  - site_page: https://jitsu.com/docs/functions (fetched 2026-08-29T08:58:16.496687+00:00, sha ca6c8fb02dc9)
  - site_page: https://jitsu.com/docs/self-hosting (fetched 2026-08-29T08:58:16.498335+00:00, sha 4099f6702bed)
  - site_page: https://jitsu.com/features/identity-stitching (fetched 2026-08-29T08:58:16.500079+00:00, sha b8a4ae43a6e0)
  - site_page: https://jitsu.com/features/clickhouse (fetched 2026-08-29T08:58:16.501759+00:00, sha 004ea1ac5a49)
  - site_page: https://jitsu.com/pricing (fetched 2026-08-29T08:58:16.491763+00:00, sha 226de8df4fab)
- Data as of 2026-08-30T08:39:29.467469+00:00.