Open source focus

Open Source Alternatives to Jether Energy

11 open source Cleantech options similar to Jether Energy, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

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Cardano55
Blockchain
A secure, scalable, and sustainable proof-of-stake blockchain platform for decentralized applications and smart contracts.
Open source · Self-hostable
Databricks82
Data AnalyticsSan Francisco, United States$36.7B
A unified data analytics and AI platform built on the lakehouse architecture.
Open source · Self-hostable
Airbyte70
Data IntegrationSan Francisco, United States$181.0M
An open-source data integration platform for ELT, reverse-ETL, and AI agents.
Open source · Self-hostable
ScyllaDB67
DatabasePalo Alto, United States$101.0M
ScyllaDB is a high-performance, low-latency NoSQL database for data-intensive applications, designed to scale with modern infrastructure.
Open source · Self-hostable
Firebolt65
Cloud Data WarehousePalo Alto, United States$264.0M
Cloud data warehouse for building next-gen analytics experiences with sub-second performance, designed for engineers and AI agents.
Open source
ClickHouse62
DatabaseBerlin, Germany$350.0M
An open-source, column-oriented OLAP database management system for real-time analytics.
Open source · Self-hostable
Julia61
Programming LanguagesWaltham, USA$15.0M
A high-performance, dynamic programming language for technical computing.
Open source
Countly55
AnalyticsLondon, United Kingdom$1.1M
Product analytics and customer engagement platform built on an open-source, self-hosted foundation.
Open source · Self-hostable
Marimo40
Developer ToolsSan Francisco, United States$4.5B
Open-source reactive Python notebook for data and AI workloads.
Open source · Self-hostable
AG
Agent4Rec20
Agentic AI
Simulates 1,000 LLM-powered agents for diverse movie recommendation preferences.
Open source
Apache Cassandra10
Database
Open-source, distributed NoSQL database for handling large-scale, high-availability data without compromising performance.
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
CardanoA secure, scalable, and sustainable proof-of-stake blockchain platform for decentralized applications and smart contracts.	Blockchain	Open source · Self-hostable	—	—	55
DatabricksA unified data analytics and AI platform built on the lakehouse architecture.	Data Analytics	Open source · Self-hostable	San Francisco, United States	$36.7B	82
AirbyteAn open-source data integration platform for ELT, reverse-ETL, and AI agents.	Data Integration	Open source · Self-hostable	San Francisco, United States	$181.0M	70
ScyllaDBScyllaDB is a high-performance, low-latency NoSQL database for data-intensive applications, designed to scale with modern infrastructure.	Database	Open source · Self-hostable	Palo Alto, United States	$101.0M	67
FireboltCloud data warehouse for building next-gen analytics experiences with sub-second performance, designed for engineers and AI agents.	Cloud Data Warehouse	Open source	Palo Alto, United States	$264.0M	65
ClickHouseAn open-source, column-oriented OLAP database management system for real-time analytics.	Database	Open source · Self-hostable	Berlin, Germany	$350.0M	62
JuliaA high-performance, dynamic programming language for technical computing.	Programming Languages	Open source	Waltham, USA	$15.0M	61
CountlyProduct analytics and customer engagement platform built on an open-source, self-hosted foundation.	Analytics	Open source · Self-hostable	London, United Kingdom	$1.1M	55
MarimoOpen-source reactive Python notebook for data and AI workloads.	Developer Tools	Open source · Self-hostable	San Francisco, United States	$4.5B	40
AGAgent4RecSimulates 1,000 LLM-powered agents for diverse movie recommendation preferences.	Agentic AI	Open source	—	—	20
Apache CassandraOpen-source, distributed NoSQL database for handling large-scale, high-availability data without compromising performance.	Database	Open source · Self-hostable	—	—	10