head to head · open source
opa vs tradememory-protocol
opa has 12,425 GitHub stars, 1,706 forks, 310 open issues and last shipped yesterday. tradememory-protocol has 1,438 stars, 170 forks, 1 open issues and last shipped 13 days ago. opa leads on adoption by 764% (12,425 vs 1,438 stars). opa is written in Go under Apache-2.0; tradememory-protocol is written in Python under MIT. opa has attracted 14% as many forks as stars, tradememory-protocol 12%. opa was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (compliance), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| opa | tradememory-protocol | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 1.4K |
| License | Apache-2.0 | MIT |
| Written in | Go | Python |
| Last push | 2026-11-04 | 2026-10-23 |
| Forks | ⑂ 1.7K | ⑂ 170 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick opa if
- You weight community size — 12K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick tradememory-protocol if
- You want the tradememory-protocol feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and tradememory-protocol fits your workflow better
About opa
Open Policy Agent Open Policy Agent (OPA) is an open source, general purpose policy engine that enables unified, context aware policy enforcement across the entire stack. OPA is proud to be a graduated project in the Cloud Native Computing Foundation (CNCF) landscape. For details read the CNCF announcement. Get started with OPA Write your first Rego policy with the Rego Playground or use it to share your work with others for feedback and support. Have a look at the Access Control examples if you're not sure where to start. Install the VS Code extension to get started locally with live diagnostics, debugging and…
About tradememory-protocol
Getting Started Use Cases API Reference OWM Framework Limitations 中文版 Project status (August 2026): Feature complete, in maintenance mode — bug and security reports are still reviewed; no new features or hosted service are planned. For paid work, see Trading Record Analysis. Your trading AI has amnesia. And regulators are starting to notice. It makes the same mistakes every session. It can't explain why it traded. It forgets everything when the context window ends. Meanwhile, MiFID II is raising the bar for algorithmic decision documentation (Article 17). The EU AI Act demands systematic logging of AI actions…
read the full tradememory-protocol overview →
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Frequently asked questions
Is opa or tradememory-protocol more popular?
opa has 12,425 GitHub stars and tradememory-protocol has 1,438. opa has the larger community by that measure.
Are opa and tradememory-protocol free?
Both are open source. opa is licensed under Apache-2.0 and tradememory-protocol under MIT. Neither carries a licence fee.
What is the difference between opa and tradememory-protocol?
opa is written in Go and tradememory-protocol in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, opa or tradememory-protocol?
Choose opa if you want the larger community (12,425 stars) or its Apache-2.0 licence terms. Choose tradememory-protocol if its feature set, stack or MIT licence fits better. Both are self-hostable.