rapr
rapr generalises its Rangeland Analysis Platform API access one endpoint at a time
Comparison · Infra & APIs
Jackett vs SLmetrics
A side-by-side editorial comparison of Jackett and SLmetrics — release velocity, themes, recent moves, and the top alternatives to consider.
Jackett vs SLmetrics: at a glance
What is Jackett?
Jackett's daily release treadmill now spends commits undoing tracker removals it made days earlier.
Jackett ships near-daily auto-generated releases, each carrying a handful of tracker-definition commits: domain bumps, indexers added or removed, request delays, category tweaks. The work is entirely definition maintenance against sites that keep moving — no changes to the application itself appear in this window. Bodies are machine-generated commit lists with no prose.
What is SLmetrics?
A young ML metrics package rewrote its own backend twice in six months chasing speed.
SLmetrics provides supervised learning evaluation metrics for R — confusion matrices, classification and regression measures, ROC and precision-recall curves — with the computation pushed into C++. After a series of pre-releases it now runs on an Armadillo backend, supports OpenMP parallelism and LAPACK/BLAS, and reports 5-20x speedups over its earlier implementations. The API has been reshaped for extensibility, with an estimator argument replacing the fixed aggregation options.
Jackett vs SLmetrics: editorial side-by-side
Jackett
5.0INFRA · APIS
Jackett's daily release treadmill now spends commits undoing tracker removals it made days earlier.
◆ Current state
Jackett ships near-daily auto-generated releases, each carrying a handful of tracker-definition commits: domain bumps, indexers added or removed, request delays, category tweaks. The work is entirely definition maintenance against sites that keep moving — no changes to the application itself appear in this window. Bodies are machine-generated commit lists with no prose.
◆ Where it's heading
The notable pattern is reversal. 720pier was removed in v0.24.2404 and restored by revert in v0.24.2414 three days later; scenetime was added as an indexer in v0.24.2398 and dropped four days after in v0.24.2413 when an API class requirement was lifted. Round-trips like these are now a routine part of the cadence, which suggests removals are being made on incomplete information and walked back once users object.
◆ Prediction
The daily cadence continues, dominated by domain bumps and FlareSolverr dependency updates. Expect further add-then-remove round-trips as tracker sites change their access rules faster than definitions can settle.
SLmetrics
0.0INFRA · APIS
A young ML metrics package rewrote its own backend twice in six months chasing speed.
◆ Current state
SLmetrics provides supervised learning evaluation metrics for R — confusion matrices, classification and regression measures, ROC and precision-recall curves — with the computation pushed into C++. After a series of pre-releases it now runs on an Armadillo backend, supports OpenMP parallelism and LAPACK/BLAS, and reports 5-20x speedups over its earlier implementations. The API has been reshaped for extensibility, with an estimator argument replacing the fixed aggregation options.
◆ Where it's heading
Every release in this timeline is about making the same metrics compute faster or compose better. The backend moved from Rcpp to plain C++, gained OpenMP, then was ported wholesale from Eigen to Armadillo with heavy templating. In parallel the author has been widening the API's joints: generic S3 signatures, an extensible estimator argument, and function signatures loose enough that wrapping packages can rename arguments. Bundled datasets and embedded formulas in the docs point at teaching and benchmarking use. The package still labels itself pre-release, which is consistent with how freely it has broken argument names along the way.
◆ Prediction
A stable non-pre-release version is the natural next step now that the backend has settled on Armadillo, though the repeated willingness to rename arguments suggests more API churn may come first.
Alternatives to Jackett and SLmetrics
Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Jackett or SLmetrics.
b3doc
A small B-Cubed utility for turning R Markdown into publishable docs
gpkg
An R interface to GeoPackage that keeps sanding down its own API
logger
R's logging package handed to new maintainers and rebuilt from the inside out
portfoliobacktest
Four dormant years end with a test fix, not a feature
discretetests
Four years of releases land in four minutes as the changelog gets backfilled to GitHub
See all Jackett alternatives → · See all SLmetrics alternatives →
Recent activity from Jackett and SLmetrics
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 20h agoJackett720pier tracker restored by revert
- 1d agoJackettScenetime dropped days after being added; new magnetcat domains
- 3d agoJackettdocspedia cookie auth, nyaa season search, duplicate GET fix
- 4d agoJackettDomain bumps across five trackers; 720pier removed
- 5d agoJackettScenetime indexer added; kunlun and MTV trackers removed
- 6d agoJackettTimezone fix, request delay and an anime category across four trackers
- 1y agoSLmetricsArmadillo backend brings 5-20x speedups and an extensible metrics API ⚡
- 1y agoSLmetricsConsistent S3 signatures and three bundled datasets
- 1y agoSLmetricsRegression metrics 2-10x faster with reworked OpenMP controls
- 1y agoSLmetricsOpenMP parallelism and a soft-label entropy family
- 1y agoSLmetricsCross-entropy loss and relative RMSE with three normalisations
- 1y agoSLmetricsSample weights flow through the confusion matrix
Frequently asked questions
What is the difference between Jackett and SLmetrics?
They serve adjacent needs but don't currently overlap on shipped themes. Jackett is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Jackett better than SLmetrics?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Jackett is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Jackett?
Top Jackett alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Jackett alternatives" section above for the current picks, or visit /alternatives/jackett for the full list with editorial commentary on each.
What are the best alternatives to SLmetrics?
Top SLmetrics alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "SLmetrics alternatives" section above for the current picks, or visit /alternatives/slmetrics for the full list with editorial commentary on each.