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Catalog

28 projects. Start from the task you have; products with a detail page come first. Each entry shows where it runs and whether a stable release exists.

  • BatteryBridgeExperimental · v0.4.0

    Set a laptop charge limit and battery-care schedule where your hardware allows it, and see exactly which controls your device supports.

    Devices and networks · macOS, Windows, Linux · Laptop with a supported charge-control interface; administrator rights to install the service

    DetailsSource

  • Cambridge Dictionary Audiov1.0.1

    Save US and UK pronunciation recordings of English words as MP3 files, with IPA, definitions and Anki export.

    Learning and languages · Windows, macOS, Linux; Android, iOS without an installable build · Desktop app, terminal app, Chrome/Firefox extension, Python CLI · fork of astrosander/cambridge-dictionary-audio

    DetailsSource

  • DBReducev0.5.1

    Shrink a PostgreSQL database to the few rows and tables that still reproduce a failing test.

    Databases and data files · Linux, macOS · Python 3.10–3.15; PostgreSQL 13–18 with matching pg_dump, pg_restore and psql

    DetailsSource

  • Form Forgev0.2.0

    Run your own form service: publish versioned forms, collect responses in PostgreSQL, and deliver them to signed webhooks.

    Forms and web services · Web browser · Self-hosted: Node.js, PostgreSQL, Inngest; Docker Compose or Netlify

    DetailsSource

  • MarginCarryv0.2.0

    Carry your Zotero highlights and underlines to a new revision of the same PDF, reviewing each one before it is written.

    Documents and research · macOS, Windows, Linux · Zotero 10.0.5 or a later 10.0.x release (desktop)

    DetailsSource

  • SpaceMosaicv0.1.2

    Find out what takes up space in a folder with a size map, without deleting or changing anything.

    Devices and networks · macOS, Windows, Linux, Android; iOS without an installable build · Desktop app; Android 8.0+ APK; iOS requires your own signing

    DetailsSource

  • AgentKcalAlpha · Prerelease only

    Keep a private local history of AI coding agent usage, with energy estimates you can inspect.

    Metrics and usage · Linux, macOS, Windows · Node.js 24.12+ CLI

    Source

  • BindWitnessv0.1.2

    Verify which shared library actually provides your native symbols on Linux.

    Testing and reliability · Linux · Linux with glibc; amd64 and arm64 binaries

    Source

  • CancelLensv0.1.0

    Turn asyncio cancellation bugs into replayable tests that check resources are released.

    Testing and reliability · Linux, macOS, Windows · Python library and pytest plugin

    PyPI packageSource

  • CineCluev0.1.0

    Play a daily film deduction game: guess a movie from its shared people, places and studios.

    Games and music · Web browser · Web browser

    Open the appSource

  • CollationDeltav0.2.0

    Detect changes in string sorting and equality before upgrading ICU, Python or Node.js.

    Databases and data files · Linux, macOS, Windows · Python CLI; captures from Python or Node.js comparators

    PyPI packageSource

  • CronDeltav0.1.0

    Compare when two Python cron libraries or versions would fire a schedule before you switch.

    Testing and reliability · Linux, macOS, Windows · Python CLI

    PyPI packageSource

  • CursorProofv0.2.0

    Test a REST API’s cursor pagination for skipped, repeated or misordered records.

    Testing and reliability · Linux, macOS, Windows · Python CLI

    PyPI packageSource

  • ExitScopev0.1.1

    Check that a wrapper or task runner shuts down cleanly: no surviving child processes or open pipes.

    Testing and reliability · Linux · Linux only; build with Cargo

    Source

  • GHA Cache Auditorv0.1.6

    Find GitHub Actions cache keys and restore prefixes that can reuse incompatible files.

    CI and dependencies · Linux, macOS, Windows · Python 3.11+ CLI, static analysis only

    PyPI packageSource

  • HarmoniaNo release yet

    Import playlists from Spotify, YouTube Music or Yandex Music, match tracks across catalogues, and build rule-based playlists on your own server.

    Games and music · Linux · Self-hosted Python 3.10–3.15 with PostgreSQL and Redis

    Source

  • IDBShiftv0.1.0

    Test whether IndexedDB data survives an app upgrade, rollback and second upgrade.

    Testing and reliability · macOS, Linux · Node.js with Playwright Chromium; run from source

    Source

  • LANPairv0.1.2

    Diagnose why two devices on the same network cannot see each other, using evidence collected on both sides.

    Devices and networks · macOS, Windows, Linux; Android, iOS without an installable build · Run on both devices; desktop builds are unsigned, Android builds are test-only, iOS from source

    Source

  • LockConev0.2.0

    Explain which pnpm lockfile changes follow from the dependencies you actually changed.

    CI and dependencies · Linux, macOS, Windows · Node.js 22.12+ CLI, installed from the release tarball

    Source

  • OverflowLensv0.2.0

    Work out the possible error rate when OpenTelemetry has merged request attributes into an overflow series.

    Metrics and usage · Web browser · Static browser app served locally; files stay on your computer

    Source

  • ParquetScopev0.1.0

    See which byte ranges DuckDB reads from a Parquet file over HTTP and how file layout changes them.

    Databases and data files · Linux, macOS, Windows · Python 3.10+; wheel from GitHub Releases

    Source

  • PrintWitnessv0.1.2

    Check that required text, table rows and links survive an HTML-to-PDF export.

    Documents and research · macOS, Windows, Linux · Standalone desktop app (bundles Chromium); unsigned

    Source

  • ProtoCarryv0.1.1

    Check that an older application keeps newer Protobuf fields when it reads and writes a message.

    Testing and reliability · macOS, Linux · CLI binaries for macOS arm64 and Linux arm64; Go source

    Source

  • SameBytev0.1.2

    Check that a GitHub Actions workflow tests, scans and deploys the same container image bytes.

    CI and dependencies · Linux, macOS, Windows · Node.js 22+ CLI, installed from the release tarball

    Source

  • StaleFillv0.3.1

    Reproduce cache-aside races where stale data reappears in Redis or Valkey after an update.

    Testing and reliability · Linux, macOS, Windows · CLI binaries; needs a disposable Redis or Valkey

    Source

  • TxnStagev0.2.0

    Step through real SQLite transactions on several connections and see where they block or lose data.

    Databases and data files · macOS, Windows, Linux · Single executable with a local web interface; macOS binaries unsigned

    Source

  • UnpackProofv0.1.1

    Regression-test TAR extraction commands in disposable Docker containers.

    Testing and reliability · Linux, macOS · Go CLI; needs Docker

    Source

  • WatchConvergev0.2.0

    Check whether a file watcher or index still matches the disk after atomic saves, renames and deletions.

    Testing and reliability · Linux, macOS, Windows · Node.js 22.18+; run from source

    Source

Forks with their own changes

These are forks of other people’s projects. They are listed separately because most of the work belongs to the original authors.

  • Ultimate Geography (RU/EN fork)v2026.10.27

    Study world geography in Anki with decks in seven languages, sourced corrections and pronunciation guides.

    fork of anki-geo/ultimate-geography · Windows, macOS, Linux · Anki deck packages · See upstream licenses

    Source

  • Breathly (fork)Prerelease only

    Breathing exercises on Android, with presets, start delay and Health Connect export added in this fork.

    fork of mmazzarolo/breathly-app · Android without an installable build · React Native app; no published release in this fork · MPL-2.0

    Source

Not listed: course and practice repositories (small FastAPI, Django and Flask exercises) and forks without changes. They remain visible on the GitHub profile.