Open Source AI Gateways using CSS
A curated collection of the best open source platforms that route and secure API access to multiple AI models through one unified interface, with authentication, rate limiting, and usage monitoring. using CSS.
LLM gateway for auth, load balancing, and spend tracking
Stars
Stars growing over the last 30 days61,627Last commit
6 hours agoLicense
Unknown
Acts as a unified proxy across 100+ LLMs, normalizing them to the OpenAI format while handling virtual keys, budgets, rate limits, fallbacks, and cost tracking.
Open Source Alternative to:
Complete production stack for AI teams
Stars
13,228Last commit
5 months agoLicense
MIT
Comprehensive AI platform with gateway, observability, guardrails, and prompt management. Access 1,600+ LLMs via unified API with enterprise-grade security.
Open Source Alternative to:
Ultra-fast AI gateway with enterprise-grade reliability
Stars
Stars growing over the last 30 days8,957Last commit
18 hours agoLicense
Apache-2.0
Open-source AI gateway delivering 50x faster performance than alternatives. Access 1000+ models from 8+ providers with built-in governance, fallback, and observability.
Open Source Alternative to:
Route GenAI traffic with confidence using open source
Stars
Stars growing over the last 30 days2,247Last commit
19 hours agoLicense
Apache-2.0
Open source gateway built on Envoy for routing application traffic to GenAI services. Supports 16+ LLM providers including OpenAI, Anthropic, AWS Bedrock.
Open Source Alternative to:
Unified API for all LLM providers with analytics
Stars
1,694Last commit
19 hours agoLicense
MIT
Route, manage, and analyze LLM requests across multiple providers with one API. Compatible with OpenAI format, includes usage analytics and performance monitoring.
Open Source Alternative to:
Docmost – Open-source wiki software with real-time collaboration, diagrams, AI, SSO, RBAC permissions and more.
CodeRabbit