Open source focus

Open Source Alternatives to Constellation Space

12 open source SpaceTech options similar to Constellation Space, 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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ChainSafe Systems57
Web3Toronto, Canada$18.8M
Leading Web3 infrastructure firm specializing in protocol engineering, cross-chain interoperability, and Web3 gaming.
Open source · Self-hostable
Odigos56
Enterprise$13.0M
Open-source project for instant distributed tracing and metrics using eBPF and OpenTelemetry.
Open source · Self-hostable
CloudQuery53
EnterpriseSan Francisco, United States$18.5M
Open-source data integration platform for security and infrastructure teams.
Open source · Self-hostable
Kong50
API ManagementSan Francisco, United States$511.0M
API gateway and management platform for microservices and cloud-native applications.
Open source · Self-hostable
Defcon47
HardwareMcLean, United States$44.0M
The Defcon badges feature a unique open-source chip that doubles as a security key.
Open source
Heroic Labs47
GamingLisbon, Portugal
Social infrastructure for games, makers of Nakama game server.
Open source · Self-hostable
PromptQL45
Artificial IntelligenceSan Francisco, United States
An AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.
Open source · Self-hostable
Slauth.io43
EnterpriseAshburn, United States$1.5M
Ark Infotech offers Cybersecurity, AI/ML, Data Analytics, and IT consulting services, including the Slauth.io IAM Policy Copilot.
Open source · Self-hostable
keyval29
EnterpriseTel Aviv, Israel
Odigos provides an open-source software solution for developers to enable distributed tracing for their applications using OpenTelemetry and eBPF, accelerating production issue resolution.
Open source · Self-hostable
Realnas19
Open Source
Open-source Network Attached Storage (NAS) operating system based on FreeBSD, managing ZFS, SMB, NFS, users, snapshots, and boot environments.
Open source · Self-hostable
Nexspence10
Open Source
A free, open-source, self-hosted universal artifact repository manager.
Open source · Self-hostable
Gako7
Cybersecurity
Open-source, self-hostable secret manager where the server cannot read your secrets.
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
ChainSafe SystemsLeading Web3 infrastructure firm specializing in protocol engineering, cross-chain interoperability, and Web3 gaming.	Web3	Open source · Self-hostable	Toronto, Canada	$18.8M	57
OdigosOpen-source project for instant distributed tracing and metrics using eBPF and OpenTelemetry.	Enterprise	Open source · Self-hostable	—	$13.0M	56
CloudQueryOpen-source data integration platform for security and infrastructure teams.	Enterprise	Open source · Self-hostable	San Francisco, United States	$18.5M	53
KongAPI gateway and management platform for microservices and cloud-native applications.	API Management	Open source · Self-hostable	San Francisco, United States	$511.0M	50
DefconThe Defcon badges feature a unique open-source chip that doubles as a security key.	Hardware	Open source	McLean, United States	$44.0M	47
Heroic LabsSocial infrastructure for games, makers of Nakama game server.	Gaming	Open source · Self-hostable	Lisbon, Portugal	—	47
PromptQLAn AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.	Artificial Intelligence	Open source · Self-hostable	San Francisco, United States	—	45
Slauth.ioArk Infotech offers Cybersecurity, AI/ML, Data Analytics, and IT consulting services, including the Slauth.io IAM Policy Copilot.	Enterprise	Open source · Self-hostable	Ashburn, United States	$1.5M	43
keyvalOdigos provides an open-source software solution for developers to enable distributed tracing for their applications using OpenTelemetry and eBPF, accelerating production issue resolution.	Enterprise	Open source · Self-hostable	Tel Aviv, Israel	—	29
RealnasOpen-source Network Attached Storage (NAS) operating system based on FreeBSD, managing ZFS, SMB, NFS, users, snapshots, and boot environments.	Open Source	Open source · Self-hostable	—	—	19
NexspenceA free, open-source, self-hosted universal artifact repository manager.	Open Source	Open source · Self-hostable	—	—	10
GakoOpen-source, self-hostable secret manager where the server cannot read your secrets.	Cybersecurity	Open source · Self-hostable	—	—	7