jo-duchan/tapflow
Self-hosted iOS & Android simulator streaming for the whole team
Build with Backblaze B2
SDKs, agent skills, IDE extensions, and reference pipelines from Backblaze Labs. All open source.
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Where it stands
Rank, growth pace and release cadence relative to everything GStars tracks.
5 releases in the last 90 days, the latest 4 days ago, with 24 contributors on GitHub.
Use Cases & Benefits
- Provides self-hosted streaming of iOS simulators and Android emulators accessible via browser for mobile QA teams.
- Keeps all builds, streams, and recordings on your own infrastructure, avoiding third-party cloud uploads and recurring costs.
- Use for enabling non-developers like product managers and designers to test mobile apps without installing toolchains.
- Use for running centralized mobile QA sessions with real-time device interaction streamed over LAN or internet securely.
- Use for integrating simulator control and session screenshots into CI/CD pipelines and AI-agent workflows via REST API.
Should you depend on it?
License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.
License
MIT
Permissive: commercial use, modification and redistribution are allowed with attribution.
Community files
- README: present
- Contributing guide: present
- Code of conduct: present
Watch-outs
No watch-outs from GStars' checks.
General guidance from repository metadata, not legal advice. How we score
From the README
A self-hosted Appetize / BrowserStack alternative for mobile QA teams
No WebDriverAgent · 2-line setup · MIT
Streams over H.264 with a zero-buffer decoder (no MSE) — latency measurements ↗
v0.x, actively developed — backward-compatible by default; breaking changes are rare and always noted in the changelog. Roadmap →
Mobile QA usually depends on access to simulators, emulators, or physical devices — and that access is uneven across a team.
For mobile developers it means opening Xcode or Android Studio on a Mac. For everyone else, it often means asking a mobile developer every single time:
Backend developer — "How do I install the sandbox build to check what was deployed?"
Product manager — "I keep installing and removing versions just to compare behavior."
Designer — "I need to check the layout across screen sizes, but I don't have the right devices."
Physical devices add their own overhead — OS-version coverage, availability, charging, storage, handoff. Cloud simulator services solve access, but they require uploading internal builds to a third-party service and paying for remote devices while your own Macs can already run the same simulators.
We hit this exact problem, so we built tapflow.
Compared with peers in Android
Fastest-growing repositories GStars tracks in this cohort for the week of Nov 1, by 7-day star growth
| Repository | Stars | +7d | Health | Last release |
|---|---|---|---|---|
| rustdesk/rustdesk | 128.3K | +839 | 65 | 4 days ago |
| makecindy/cindy | 9.3K | +771 | 45 | today |
| DioxusLabs/dioxus | 39.5K | — | 54 | 12 days ago |
| MatsuriDayo/NekoBoxForAndroid | 23.3K | — | 24 | 262 days ago |
| 0x192/universal-android-debloater | 20.3K | — | 32 | — |
| jo-duchan/tapflow | 1.6K | — | 65 | 4 days ago |
| Category median | 23.3K | +805 | 45 | — |
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