The video downloader, done right. Fast, clean, and actually works — on every OS, for every site.
Features
Catalyst wraps the best download engine on the internet in a UI that's actually pleasant to use.
YouTube, Vimeo, Twitter, TikTok, Instagram, Reddit, Twitch, Bilibili — and hundreds more, powered by yt-dlp.
Add URLs in bulk, reorder by dragging, control how many run at once. Active downloads at the top, completed below.
Choose container, codec, and resolution. MP4 (H264) for compatibility, Best Quality for archive, MP3/M4A for audio.
Built with Tauri — uses the OS's native WebView, not Chromium. Tiny binary, low memory, genuinely fast.
No analytics. No telemetry. No account. Everything runs locally on your machine. Open source and auditable.
Every download logged with thumbnail, channel, date, size. Search by title or URL. Re-download with one click.
Create named destinations — Movies, Music, Work — each with its own directory and colour. Select when adding downloads.
yt-dlp updates silently in the background so new sites and fixes land without you doing anything.
Pull cookies automatically from Chrome, Edge, Firefox, Brave — or import a file. Unlocks members-only content.
How it works
Drop in any link from YouTube, Vimeo, Twitter, or 1800+ other sites. Bulk import a list from a text file in one shot.
Select container, quality cap, and output category. Catalyst fetches the title and thumbnail instantly.
Live progress bars, speed, ETA. When done, the file lands clean in your output folder. Get an OS notification if the window isn't focused.