3 open-source alternatives to LiteLLM, curated: One API, Bifrost, Portkey Gateway. Each is open-source; compare license and links below.
| Tool | What it is | License | Open source |
|---|---|---|---|
| One API | One API unifies 30+ LLM providers behind one OpenAI-compatible endpoint and manages key redistribution, quotas, and usage — MIT, self-hostable. | MIT | yes |
| Bifrost | OSS alt to LiteLLM; ~7151 stars; via ossinsight.io | Apache-2.0 | yes |
| Portkey Gateway | OSS alt to LiteLLM; ~12670 stars; via ossinsight.io | MIT | yes |