Generated from the final-pass tracker on 2026-04-22.
All PRs below target forks under sebastienros, not upstream repositories.
Scoring rubric:
- 5/5 — repo-language AppHost delivered and validated from local source with only minor or app-specific caveats
- 4/5 — strong deliverable with one meaningful workaround or app-specific limitation remaining
- 3/5 — deliverable and PR exist, but repo-language runtime is only partially working or blocked by a significant framework/runtime gap
- 2/5 — scaffold/deliverable exists, but the repo-language AppHost is not yet runnable due to a major platform gap
| Project | AppHost language | Fork PR | Completion | Status |
|---|---|---|---|---|
| Kestra — 26,743 ★ — Event Driven Orchestration & Scheduling Platform for Mission Critical Applications | Java | sebastienros/kestra#1 | 5/5 | Complete — Java AppHost delivered; remaining limitation is Java/polyglot self-endpoint expression resolution on the same executable resource. |
| Spring Petclinic Microservices — 2,093 ★ — Distributed version of Spring Petclinic built with Spring Cloud | Java | sebastienros/spring-petclinic-microservices#1 | 5/5 | Complete — Java AppHost delivered; OTEL verified via Zipkin; remaining quirk is Aspire health-reporting mismatch for api-gateway. |
| Apache Airflow — 45,139 ★ — Apache Airflow - A platform to programmatically author, schedule, and monitor workflows | Python | sebastienros/airflow#1 | 3/5 | Complete — Python AppHost delivered; remaining blocker is Python endpoint/DSN shaping for Airflow SQLAlchemy plus an environment-specific venv bootstrap quirk. |
| Saleor — 22,831 ★ — Saleor Core: the high performance, composable, headless commerce API. | Python | sebastienros/saleor#1 | 2/5 | Complete — Python AppHost scaffold delivered; remaining blocker is current CLI Python AppHost recognition/runtime support. |
| Apache Superset — 72,541 ★ — Apache Superset is a Data Visualization and Data Exploration Platform | Python | sebastienros/superset#1 | 3/5 | Complete — Python AppHost delivered; remaining blocker is missing with_environment(...) on Python ExecutableResource. |
| Budibase — 27,846 ★ — AI agents, automations and apps that run your operations. Model agnostic. | TypeScript | sebastienros/budibase#1 | 5/5 | Complete — strongest result; source-backed TS AppHost delivered; remaining limitations are app-side OTEL bootstrap and TS HostAndPort endpoint-expression gap for LiteLLM DB URL. |
| Cal.com — 41,937 ★ — Scheduling infrastructure for absolutely everyone. | TypeScript | sebastienros/cal.diy#1 | 4/5 | Complete — TS AppHost delivered; remaining limitations are Cal.com-side OTEL support and TS npm-preflight/Yarn workspace friction. |
| Dify — 138,776 ★ — Production-ready platform for agentic workflow development. | TypeScript | sebastienros/dify#1 | 3/5 | Complete — TS AppHost delivered; remaining blocker is dify-api Dockerfile resource stuck in Waiting under Aspire despite building outside Aspire. |
| Outline — 38,229 ★ — The fastest knowledge base for growing teams. Beautiful, realtime collaborative, feature packed, and markdown compatible. | TypeScript | sebastienros/outline#1 | 5/5 | Complete — repo-native TS AppHost delivered and verified; remaining limitation is Outline's app-specific Datadog-oriented telemetry bootstrap. |
| Twenty — 45,009 ★ — The open alternative to Salesforce, designed for AI. | TypeScript | sebastienros/twenty#1 | 3/5 | Complete — TS AppHost delivered; remaining blocker is in-repo TS AppHost/runtime not starting source-backed executable resources even though the scratch harness worked. |