WarpStream
Streaming platform
WarpStream is a Kafka-compatible BYOC platform whose stateless Agents write to object storage, keeping raw records in your VPC and buckets.
Move data
Getting data out of apps and databases and into a warehouse.
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Free open source; managed via Stitch from $100/month Singer
Open-source ELT
Singer is a specification plus a free Apache-2.0 library for connecting taps and targets over Unix pipes, with self-managed operating infrastructure.
Nexla
Enterprise ETL
Nexla is a data integration platform with reusable Nexsets, 1,000+ bidirectional connectors and ETL, CDC, streaming, API and RAG workflows.
Weld
Managed ELT
Weld combines ELT, SQL models, orchestration, and reverse ETL, with over 200 sources and an AI SQL agent included on every plan.
Improvado
Managed ELT
Improvado loads marketing and sales data into warehouses, harmonizes metrics with its MCDM, and provides governance, an AI Agent, and MCP access.
Supermetrics
Managed ELT
Supermetrics connects marketing data to Sheets, Looker Studio, Excel and Power BI, with about 175 connectors and Enterprise-only warehouse destinations.
Funnel
Managed ELT
Funnel combines 600+ connectors with managed marketing-data preparation, currency conversion, dashboards and unlimited users on every plan.
Adverity
Managed ELT
Adverity Connect collects, harmonizes, and monitors marketing data with 600+ connectors, four default quality monitors, and 40+ destinations.
Quix
Stream processing
Quix Streams is a free Python library for stateful Kafka processing; Quix Cloud adds Git-synced deployment, monitoring, and BYOC hosting.
Bytewax
Stream processing
Free Apache-2.0 Python stream processing library with a Rust engine, stateful operators, event-time windows, and SQLite recovery.
NATS
Streaming platform
NATS is a free Apache 2.0 messaging server combining pub/sub, request-reply, persistent JetStream streams, Key/Value store, and Object Store.
Conduktor
Streaming platform
Self-hosted Kafka Console for topic operations, ownership, approvals, and Chargeback, plus a Gateway proxy with paid security and failover add-ons.