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R's logging package handed to new maintainers and rebuilt from the inside out
Comparison · Infra & APIs
Jackett vs portfoliobacktest
A side-by-side editorial comparison of Jackett and portfoliobacktest — release velocity, themes, recent moves, and the top alternatives to consider.
Jackett vs portfoliobacktest: 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 portfoliobacktest?
Four dormant years end with a test fix, not a feature
portfolioBacktest runs portfolio strategies across multiple datasets and resampled windows, producing performance tables, leaderboards and charts. After a run of substantive releases through 2021 and early 2022 it went quiet for four years. The May 2026 release does one thing: fix unit tests against a breaking change in PerformanceAnalytics::Return.portfolio(), which now returns results for the full input series rather than only from the first weight date.
Jackett vs portfoliobacktest: 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.
portfoliobacktest
0.0INFRA · APIS
Four dormant years end with a test fix, not a feature
◆ Current state
portfolioBacktest runs portfolio strategies across multiple datasets and resampled windows, producing performance tables, leaderboards and charts. After a run of substantive releases through 2021 and early 2022 it went quiet for four years. The May 2026 release does one thing: fix unit tests against a breaking change in PerformanceAnalytics::Return.portfolio(), which now returns results for the full input series rather than only from the first weight date.
◆ Where it's heading
The development work is behind it. The 2019 to 2022 releases built the substance — parallel execution, resampling that works beyond stock data and beyond daily bars, transaction-cost-aware designs through w_current, and a switch from compounded to uncompounded returns in the Sharpe and annualized return calculations. Since then the package has moved only when a dependency forced it, and even then only far enough to keep the tests green.
◆ Prediction
Nothing in the entries suggests planned work; the next release is most likely triggered by another dependency change, on the same four-year-gap pattern.
Alternatives to Jackett and portfoliobacktest
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 portfoliobacktest.
discretetests
Four years of releases land in four minutes as the changelog gets backfilled to GitHub
medicalcoder
A comorbidity-coding package relicenses to BSD and grows past the American coding systems
Dragonfly
Dragonfly spends its releases on correctness in the parts of Redis compatibility nobody tests.
Unleash
Three kill-switch explainers to one point release — Unleash's feed is content-led, not release-led.
Kinsta
Kinsta keeps moving MyKinsta's control panel into its API, month by month.
See all Jackett alternatives → · See all portfoliobacktest alternatives →
Recent activity from Jackett and portfoliobacktest
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 19h 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
- 3mo agoportfoliobacktestTests fixed for a PerformanceAnalytics breaking change
- 4y agoportfoliobacktestSharpe ratio charts and reworked weight outputs
- 4y agoportfoliobacktestUncompounded return metrics and transaction-cost-aware designs
- 5y agoportfoliobacktestResampling generalised beyond daily stock data
- 6y agoportfoliobacktestCRAN example fixes and vignette references
- 6y agoportfoliobacktestDrawdown, cumulative return and stacked bar charts
Frequently asked questions
What is the difference between Jackett and portfoliobacktest?
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 portfoliobacktest?
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 portfoliobacktest?
Top portfoliobacktest alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "portfoliobacktest alternatives" section above for the current picks, or visit /alternatives/portfoliobacktest for the full list with editorial commentary on each.