{"adoption": {"forks": 2842, "observed_at": "2026-08-28T04:09:55.427953+00:00", "stars": 7048}, "canonical_url": "https://ross.abutalabs.com/products/zlib", "card": {"archived": false, "artifact_type": "library", "description": "A massively spiffy yet delicately unobtrusive compression library.", "domain": ["developer-tools", "files", "cross-platform"], "enriched": true, "function": ["compression", "file-system", "developer-tools"], "health_score": 88, "homepage": "http://zlib.net/", "language": "C", "license": "NOASSERTION", "license_family": "other", "maturity": "stable", "member_repos": ["madler/zlib"], "name": "madler/zlib", "platform": ["cross-platform", "c", "windows", "cli"], "pushed_at": "2026-06-01T09:13:57+00:00", "repo": "madler/zlib", "stars": 7048, "tags": ["deflate", "gzip", "zlib-format", "rfc1951", "lossless-compression", "c-library", "linux", "macos"], "topics": [], "urls": [], "use_cases": ["compress and decompress data in memory with deflate", "read and write gzip files", "decompress Flate streams inside PDF files", "add lossless compression to a C or C++ application", "implement zip file support via minizip", "exchange compressed data between big-endian and little-endian systems"], "what_it_is": "zlib is a general-purpose, patent-free data compression library written in C, implementing the zlib, deflate (RFC 1951), and gzip (RFC 1952) formats. It is the de facto standard compression library embedded in countless applications, languages, and file formats such as PNG and PDF.", "when_to_avoid": ["you need the highest compression ratios, where zstd, xz/LZMA, or brotli may outperform it", "you need archive features like encryption or solid compression", "you want a modern API with built-in multithreaded compression"], "when_to_choose": ["you need a mature, widely portable, patent-free compression library", "you must interoperate with gzip, PNG, PDF, HTTP, or zip formats", "you need a small, fast C library with bindings in nearly every language"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/zlib", "repo": "madler/zlib", "role": "main", "score": 72}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:09:55.427953+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T17:40:32.165684+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "9cf33e8945e3a774aba647c597e3bbf41ff0c027148758f1eae285912b77ddb4", "fetched_at": "2026-08-28T04:09:55.427953+00:00", "kind": "readme", "missing": false, "url": "https://github.com/madler/zlib"}, {"content_hash": "2e77004fe5e823fb752f0c5f4f06f2ee5d2b85ce7dda127e37e138f062677625", "fetched_at": "2026-08-29T08:36:17.751348+00:00", "kind": "homepage", "missing": false, "url": "http://zlib.net/"}, {"content_hash": "d6d9c7a84e82e232891988a14a96a1b8a29a71ffbcf9f392f1a89e12bf48d7f9", "fetched_at": "2026-08-29T08:36:17.762344+00:00", "kind": "site_page", "missing": false, "url": "http://zlib.net/zlib_faq.html"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 85, "longevity": 100, "rhythm": 39}, "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": 5471, "days_push": 93, "days_rel": 197, "gap_med": null, "n_releases_24m": 1}, "score": 72, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}