Side-by-Side Comparison
fern vs atmosphere
Compare open source repositories side by side. Stars, forks, code health, licensing, and community growth.
Recorded Stars Comparison
● fern-api/fern (3.8K)
● Atmosphere/atmosphere (3.8K)
☆ 3.8Kfern stars
☆ 3.8Katmosphere stars
+26Difference
atmosphereStar Leader
Side-by-Side Facts
| Metric | fern-api/fern ↗ | Atmosphere/atmosphere ↗ |
|---|---|---|
| Description | Input OpenAPI. Output SDKs and Docs. | Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3. Speaks MCP, A2A, and AG-UI. |
| GitHub Stars | ☆ 3,788 | ☆ 3,814 |
| Forks | 352 | 763 |
| Open Issues | 345 | 8 |
| Main Language | TypeScript | Java |
| License | Apache-2.0 | Apache-2.0 |
| Last Push | Sep 27, 2026 | Sep 28, 2026 |
| GitHub Source | Open Source ↗ | Open Source ↗ |
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