macOS 27+ Version 1.0.0 • 23.1 MB • Apple Silicon

Download Videostack for Mac (DMG)

By downloading, you accept that Videostack is provided “as is” without warranty (see disclaimer).

Highlights at a Glance

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Why Videostack?

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Saved videos pile up in folders by topic, and Finder only shows file names. Finding the clip where the chef explained the folding technique or the lecture where that theorem came up means opening videos one by one and scrubbing through them.

The usual alternatives each miss something:

• Finder & QuickLook: Find a file by name, but know nothing about what’s inside — and QuickTime won’t open webm or mkv.
• Media Servers: Built for streaming movies to a TV. They want a server, a scanner that renames things, and an account.
• YouTube Watch Later: Only works while the video is still online, and searches titles rather than what was said.

Videostack was built to be ⌘F for your video collection: one search box across every word in every subtitle, a grid you can browse at a glance, and a player that starts at the moment you were looking for.

How It Works

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1. Add Videos

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Choose File ▸ Scan Videos Folder to index the folder set in Settings, or click + to add any folder or files. For each video, Videostack reads its duration, renders a thumbnail, indexes any subtitle file next to it (video.srt or video.en.srt), and tags it with the folder it sits in, so videos/cooking/… lands in cooking. Titles are cleaned up from yt-dlp-style file names.

Your videos are never copied or modified. Removing a video from the library deletes only its index entry; the file itself stays where it is.

2. Search

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The search field at the top does two things at once:

• Free text searches the subtitles (and fetched YouTube descriptions) of every video, with search-as-you-type prefix matching.
• Scoped filters narrow the library by metadata: title:, filename: (or file:), and category: (or folder:). Quote values with spaces, e.g. title:"sourdough starter".

Combine them freely, for example lamination category:baking. Double-click a result to start playing at that line.

3. Watch

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The player keeps its controls out of the way until you move the mouse. Press Space to play or pause, ←/→ to skip 10 seconds, and F for full screen. Drag the scrubber to see frame previews, change the playback speed, or bookmark the current moment with an optional label. Open player windows are restored the next time you launch.

4. Bring In YouTube Videos

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With yt-dlp installed (brew install yt-dlp ffmpeg), File ▸ Download from YouTube… saves a video into a category subfolder of your Videos Folder together with its English subtitles, then indexes it right away. If the video is already in your library, Videostack takes you to it instead of downloading a second copy. File ▸ Fetch YouTube Metadata adds the channel, description, and upload date to videos whose file names carry a YouTube id.

Search Syntax

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Full-text search uses SQLite FTS5 and supports:

• All words: fold butter finds passages containing both words.
• Boolean operators: bread AND rye NOT sourdough, and OR for alternatives.
• Prefixes: ferment* matches ferment, fermentation, fermented… Bare words get a * automatically, for search-as-you-type.
• Exact phrases: "autolyse the dough" matches the words in that order.

Security & Distribution

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• Gatekeeper & Notarization: Distributed as a Developer ID–signed, notarized, and stapled disk image (Videostack.dmg), built with the hardened runtime.
• Signed Updates: Updates are delivered with Sparkle over HTTPS. Each update carries an EdDSA signature that the installed app verifies against a public key built into it; an update that fails verification is refused.
• Reads Videos Where They Live: Videostack indexes files in place rather than copying them into a container, and runs yt-dlp from your Homebrew installation when you ask it to, so it runs outside the App Sandbox. It only reads the files and folders you add, and it never modifies them.

Privacy: Your Library Stays on Your Mac

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• Zero Analytics or Telemetry: There are no analytics libraries, tracking pixels, crash reporters, or third-party telemetry SDKs inside Videostack.
• No Accounts: You never create an account, enter an email, or register with any service.
• Strictly Local Index: The search index, tags, bookmarks, watch positions, and thumbnails live in ~/Library/Application Support/Videostack/ on your Mac. Your videos and their subtitles are never uploaded anywhere.
• Spotlight Stays On-Device: Titles, channels, and tags are added to the macOS Spotlight index, which is local to your Mac.
• Network Requests, Only These:
  • YouTube (only when you ask): Downloading a video or fetching metadata runs yt-dlp, which contacts YouTube for that video. If yt-dlp isn’t installed, metadata falls back to YouTube’s public oEmbed endpoint, which receives only the video’s URL. Nothing about your library is sent.
  • Update check: About once a day, Videostack downloads a small update feed from sagenhaft.space. The request identifies the app version so a newer release can be offered; Sparkle’s optional system-profile reporting is turned off, so no hardware or usage details are sent.

Technology Stack

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• Language & Toolchain: Swift 6.4 (strict concurrency, actor isolation), Xcode 27
• User Interface: SwiftUI and AppKit
• Playback & Thumbnails: libVLC via SwiftVLC
• Search & Storage: SQLite FTS5 (BM25 ranking), via the system SQLite library
• System Integration: Core Spotlight
• YouTube (optional): yt-dlp and ffmpeg, installed separately
• Updates: Sparkle 2
• Target: macOS 27+ (Apple Silicon)

Third-Party Software & Licensing

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Videostack integrates and relies on several open-source projects:

libVLC & VideoLAN (LGPL v2.1)

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Videostack uses libVLC (via SwiftVLC) for media decoding, video playback, and thumbnail extraction.

• License: libVLC is copyright © VideoLAN and its contributors. It is free software distributed under the terms of the GNU Lesser General Public License (LGPL) v2.1 (or later).
• Source Code: You can obtain the complete, unmodified source code for libVLC directly from VideoLAN’s repository at code.videolan.org/videolan/vlc or via their source archives.
• Dynamic Linking & Relinking: In compliance with the LGPL v2.1, libVLC is dynamically linked as an embedded framework (VLCKit.framework / libvlc.dylib). Users may inspect, modify, or replace the libVLC binaries within the application bundle.
• Trademark: VLC and VideoLAN are registered trademarks of the VideoLAN non-profit organization. Videostack is an independent software project and is not affiliated with, endorsed by, or sponsored by VideoLAN.

yt-dlp & FFmpeg Integration

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Videostack provides an optional helper to save videos and subtitles into your local library.

• External Installation: Videostack does not bundle, package, or distribute yt-dlp or FFmpeg. It is designed to invoke the user’s independently installed binaries (e.g., installed via brew install yt-dlp ffmpeg).
• License: yt-dlp is released under The Unlicense (public domain software). FFmpeg is licensed under the LGPL v2.1+ / GPL v2+.
• Compliance & Copyright: Videostack does not host, mirror, or redistribute third-party video content. Users are solely responsible for complying with applicable copyright laws, fair use provisions, and the terms of service of any third-party website or platform they choose to download from.
• Non-Affiliation: Videostack is independent and has no official relationship, sponsorship, or affiliation with yt-dlp, YouTube, or Google LLC.

Download & Installation

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By downloading, installing, or running Videostack, you acknowledge and agree to the disclaimer and limitation of liability below.

To install, mount Videostack.dmg and drag Videostack to your /Applications folder. On first launch, choose your Videos Folder in Videostack ▸ Settings… (it defaults to ~/Movies), then File ▸ Scan Videos Folder. For YouTube downloads, install yt-dlp and ffmpeg with brew install yt-dlp ffmpeg. Videostack checks for updates automatically; you can also choose Videostack ▸ Check for Updates… at any time.

macOS 27+ Version 1.0.1 • 4.7 MB • Apple Silicon

Download Paperstack for Mac (DMG)

By downloading, you accept that Paperstack is provided “as is” without warranty (see disclaimer).

Highlights at a Glance

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Why Paperstack?

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A research collection grows into hundreds of PDFs spread across Downloads, course folders, and project directories. Finding the paper that proved that lemma or the lecture where that definition appeared usually means opening files one at a time in Preview and pressing ⌘F in each.

The usual alternatives each miss something:

• Finder & Spotlight: Good at finding a file by name, but they tell you which file matched — not where in it, and not which passage.
• Reference Managers: Built for citations and bibliographies. Many want an account, a sync service, or to move your files into their own storage.
• Preview: Searches one open document at a time.

Paperstack was built to be ⌘F for your whole library: one search box across every page you’ve collected, results you can read at a glance, and a reader that drops you on the exact passage.

How It Works

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1. Import

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Click + (or press ⌘I) and choose PDFs or whole folders. Paperstack discovers every PDF inside, lets you review the list, and indexes them in parallel with a progress estimate. For each paper it extracts the text page by page, renders a cover thumbnail, infers topic tags, and records a content fingerprint, so the same file imported twice isn’t duplicated and a file you moved on disk is re-linked instead of re-imported.

Your PDFs are never copied or modified. Removing a paper from the library deletes only its index entry; the file itself stays where it is.

2. Search

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The search field at the top does two things at once:

• Free text runs a full-text search across every page, with search-as-you-type prefix matching.
• Scoped filters narrow the library by metadata: title:, author:, filename:, and year:. Quote values with spaces, e.g. author:"joe smith".

Combine them freely, for example transformer author:vaswani year:2017.

3. Read

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Reader windows have a sidebar with the document’s outline, page thumbnails, a full-text search scoped to that paper, and your bookmarks. Select any passage and bookmark it with an optional label; bookmarks also appear in the library’s detail panel. Open reader windows are restored the next time you launch.

4. Organize

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Tags appear in the sidebar. Drag a paper onto a tag to apply it, rename or delete tags from their context menu, or apply a tag to every paper matching the current search. Two smart tags are always there: Currently Reading and Recently Imported.

Search Syntax

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Full-text search uses SQLite FTS5 and supports:

• All words: attention transformer finds pages containing both words.
• Boolean operators: logic AND foundations NOT topology, and OR for alternatives.
• Prefixes: comput* matches computer, computation, computable… Bare words get a * automatically, for search-as-you-type.
• Exact phrases (in the reader): the reader’s own search accepts quoted phrases such as "attention is all you need".

Security & Distribution

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• Gatekeeper & Notarization: Distributed as a Developer ID–signed, notarized, and stapled disk image (Paperstack.dmg), built with the hardened runtime.
• Signed Updates: Updates are delivered with Sparkle over HTTPS. Each update carries an EdDSA signature that the installed app verifies against a public key built into it; an update that fails verification is refused.
• Reads PDFs Where They Live: Paperstack indexes files in place rather than copying them into a container, so it runs outside the App Sandbox. It only reads the files and folders you import, and it never modifies them.

Privacy: Your Library Stays on Your Mac

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• Zero Analytics or Telemetry: There are no analytics libraries, tracking pixels, crash reporters, or third-party telemetry SDKs inside Paperstack.
• No Accounts: You never create an account, enter an email, or register with any service.
• Strictly Local Index: The search index, tags, bookmarks, and cover thumbnails live in ~/Library/Application Support/Paperstack/ on your Mac. Your PDFs and their text are never uploaded anywhere.
• Spotlight Stays On-Device: Titles, authors, and tags are added to the macOS Spotlight index, which is local to your Mac.
• Exactly Two Kinds of Network Request:
  • Book metadata (optional by nature): If a document contains an ISBN, Paperstack sends only that ISBN number to Open Library to look up its title, authors, year, and subjects. This happens when you import or retag. No document text, file names, or other identifiers are sent.
  • Update check: About once a day, Paperstack downloads a small update feed from sagenhaft.space. The request identifies the app version so a newer release can be offered; Sparkle’s optional system-profile reporting is turned off, so no hardware or usage details are sent.

Technology Stack

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• Language & Toolchain: Swift 6.4 (strict concurrency, actor isolation), Xcode 27
• User Interface: SwiftUI, AppKit, and PDFKit
• Search & Storage: SQLite FTS5 (BM25 ranking), via the system SQLite library
• System Integration: Core Spotlight
• Updates: Sparkle 2
• Target: macOS 27+ (Apple Silicon)

Download & Installation

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By downloading, installing, or running Paperstack, you acknowledge and agree to the disclaimer and limitation of liability below.

To install, mount Paperstack.dmg and drag Paperstack to your /Applications folder. On first launch, click + to import a folder of PDFs. Paperstack checks for updates automatically; you can also choose Paperstack ▸ Check for Updates… at any time.