There are 4 repositories under taxii topic.
TAXII server implementation in Python from EclecticIQ
Threat-Intel repository. API: https://github.com/davidonzo/apiosintDS
OASIS TC Open Repository: TAXII 2 Server Library Written in Python
OASIS TC Open Repository: TAXII 2 Client Library Written in Python
TAXII client implementation from EclecticIQ
OASIS TC Open Repository: GitHub Pages site for STIX and TAXII
TAXII Server supporting the 2.1 spec.
SpringBoot implementation of TAXII server backed with BPMN configuration
TAXII 2.0 Server implemented in Node JS with MongoDB backend
A desktop App to add STIX-2 objects to TAXII-2.0 servers
A repository dedicated to deliver a comprehensive set of tools for integration and convenient use of Kaspersky Threat Intelligence services
A set of development tools for STIX and TAXII development, inlcuding a web app
TAXII2 server manager for sra-taxii2-server, provides initial auth management and CRUD operations for TAXII2 server pieces
Cyber Security Automation Orchestration Tooling
TAXII 2.0 library and tool to browse STIX data objects
A scraper that uses MITRE to search vulnerabilities and STIX/TAXII (X-Force Threat Intel) to fetch severity scoring.