head to head · open source
Hermes Agent vs sponge
Hermes Agent has 246,492 GitHub stars, 51,615 forks, 41,784 open issues and last shipped yesterday. sponge has 2,867 stars, 271 forks, 42 open issues and last shipped 9 months ago. Hermes Agent leads on adoption by 8,498% (246,492 vs 2,867 stars). Hermes Agent is written in Python under MIT; sponge is written in Go under MIT. Hermes Agent has attracted 21% as many forks as stars, sponge 9%. Hermes Agent was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 8884 open source comparisons
Side by side
| Hermes Agent | sponge | |
|---|---|---|
| GitHub stars | ★ 246K | ★ 2.9K |
| License | MIT | MIT |
| Written in | Python | Go |
| Last push | 2026-09-17 | 2025-12-15 |
| Forks | ⑂ 52K | ⑂ 271 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Hermes Agent if
- You weight community size — 246K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick sponge if
- You want the sponge feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and sponge fits your workflow better
About Hermes Agent
Hermes Agent is a desktop AI agent developed by Nous Research that maintains persistent memory and self improving capabilities across sessions and platforms. It operates as a local first, cross platform interface for LLMs, integrating with multiple model providers and deployment environments without vendor lock in. The agent implements a closed learning loop where it curates its own memory, creates and refines skills from experience, and supports cross session recall via full text search and summarization.
read the full Hermes Agent overview →
About sponge
Sponge is a Go development framework for building backend services through code generation. It lives in the Go ecosystem and integrates Gin, gRPC, GORM, and Protobuf. The project parses definitions written in SQL, Protobuf, or JSON configuration files into modular service code.
read the full sponge overview →
More in AI & Machine Learning
Related comparisons
More AI Interaction & Interfaces projects
Compare either of these against the rest of the AI Interaction & Interfaces field.
Frequently asked questions
Is Hermes Agent or sponge more popular?
Hermes Agent has 246,492 GitHub stars and sponge has 2,867. Hermes Agent has the larger community by that measure.
Are Hermes Agent and sponge free?
Both are open source. Hermes Agent is licensed under MIT and sponge under MIT. Neither carries a licence fee.
What is the difference between Hermes Agent and sponge?
Hermes Agent is written in Python and sponge in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Hermes Agent or sponge?
Choose Hermes Agent if you want the larger community (246,492 stars) or its MIT licence terms. Choose sponge if its feature set, stack or MIT licence fits better. Both are self-hostable.