{"adoption": {"forks": 127, "observed_at": "2026-08-28T04:04:10.833062+00:00", "stars": 1264}, "canonical_url": "https://ross.abutalabs.com/products/opalang", "card": {"archived": false, "artifact_type": "framework", "description": "The Opa Language for Web Application Development", "domain": ["web-development", "programming-languages", "compilers", "backend", "frontend"], "enriched": true, "function": ["compiler", "web-framework", "orm", "type-system", "serialization"], "health_score": 20, "homepage": "http://opalang.org", "language": "OCaml", "license": "NOASSERTION", "license_family": "other", "maturity": "maintenance", "member_repos": ["MLstate/opalang"], "name": "MLstate/opalang", "platform": ["cross-platform"], "pushed_at": "2020-09-30T14:26:10+00:00", "repo": "MLstate/opalang", "stars": 1264, "tags": ["opa-language", "functional-programming", "fullstack", "compiles-to-javascript", "mongodb", "postgresql", "couchdb", "agpl", "nodejs", "linux", "macos"], "topics": [], "urls": [], "use_cases": ["build full-stack web apps in a single language", "write client and server code without manual AJAX calls", "compile a functional language to JavaScript", "query SQL and NoSQL databases from application code", "develop web applications with a strong static typechecker"], "what_it_is": "Opa is a functional programming language for web development that compiles to JavaScript, letting developers write frontend and backend code in one language. It ships a compiler plus a runtime JavaScript library, with built-in database query support for PostgreSQL, MongoDB, and CouchDB and a Node.js-based server runtime.", "when_to_avoid": ["you need a mainstream ecosystem with active community and hiring pool", "you require frequent updates or modern tooling support", "you want to avoid AGPL-licensed compiler toolchains in a hosted platform"], "when_to_choose": ["you want one language for both frontend and backend web code", "you value strong static typing with type inference in web development", "you want database queries integrated into the language"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/opalang", "repo": "MLstate/opalang", "role": "main", "score": 23}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:04:10.833062+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T05:04:01.826087+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e8814c201ad6a3724784a1f76aa4325d0590677ba7f735a84264fcad19cb0ff0", "fetched_at": "2026-08-28T04:04:10.833062+00:00", "kind": "readme", "missing": false, "url": "https://github.com/MLstate/opalang"}, {"content_hash": "681589991afc8e75e029f6cbfe3de6dca2cfebedf439ad30fbcfbc5c6da5e999", "fetched_at": "2026-08-29T12:15:58.161542+00:00", "kind": "homepage", "missing": false, "url": "http://opalang.org"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 8}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 5647, "days_push": 2163, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 23, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}