Mira vs SMS
Mira
miracode.aiSMS
github.comSide by side
| Figure | Mira | SMS |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Linux | — | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 1 |
| Spec score · Sega Master System Emulators | 7.5 (#10) | 7.5 (#13) |
| License | The source is available under the Apache 2.0 license. | The repository describes SMS as free and open source under the MIT license. |
| Notable limitation | The docs say Bitbucket support is on the roadmap rather than currently supported. | The README lists sound support as a todo item. |
| Product | Mira is an open-source AI code reviewer that reviews pull and merge requests and posts inline comments and walkthroughs. | SMS is a free and open-source Sega Master System emulator written in Go. |
Plans
In their own words
Mira
Mira is a free, open-source AI code reviewer for pull and merge requests. It indexes repositories, using project context beyond the changed diff when assessing changes. Review results include inline comments with severity and confidence, plus a pull-request walkthrough and summary. GitHub users can apply one-click suggestions. Security analysis combines model-based review with secret scanning and OSV checks for packages added or upgraded in a request. Mira can learn custom review rules from rejected comments and recurring feedback on merged requests. It supports GitHub, GitLab, Forgejo, and Codeberg; Bitbucket support is planned. Operators deploy Mira themselves as a Docker image, storing indexes in SQLite or Postgres. Requests are routed through OpenRouter, with provider choices including Anthropic, OpenAI, Google, and DeepSeek. The maker says self-hosted deployments send no data or telemetry to its infrastructure. The source is available under Apache 2.0. The free plan includes all features; users pay model-provider costs directly.
SMS
SMS is a free, open-source Sega Master System emulator written in Go for Linux. Its source repository is public on GitHub and described as MIT licensed. The emulator provides complete Zilog Z80 emulation and is described as concurrent. Graphics use an SDL backend with a 2x scaler and fullscreen support. Keyboard controls map the arrow keys to joypad directions, X to Fire 1, and Z to Fire 2. The README documents a Go installation command and shows launching an SMS ROM with the supplied executable. Sound support is listed as a project todo, and writing more tests is also listed as a todo. The stated free and open-source plan costs nothing. The project is focused on Sega Master System emulation, with the listed display and keyboard controls defining its documented user-facing operation.