Can save links or full websites. Could not find any demos or videos. ( Try searching anything "hamster" on youtube.)

Can be selfhosted in the cloud or it can be hosted locally on desktop. Can integrate with some popular note taking apps like Obsidian and Logseq including the ability to highlight.
Not open source, But has a perpetual license option currently:
$49.99 perpetual without updates
$60.00 perpetual with updates

https://github.com/hamsterbase
https://hamsterbase.com/
Download Desktop app

Mac App Store | Mac with Apple chip｜Mac with Intel chip｜Windows
Detailed installation guides

macOS | Windows | Synology | Docker | Build with minified js

Features

Store, manage, and preview HTML, MHTML and Webarchive documents.
Webpages can be highlighted, annotated and annotated retroactively.
Create custom views to filter webpages.
How to turn views into RSS feed.
No dependency on any server, all data is local first.
Full Text Search
Open source SDK
Dark Mode

Faq
Is HamsterBase open source?

HamsterBase is not open source software, it is only distributed through GitHub.

But we have open sourced the SDK, you can find it here.

And we provide some open source Extension

hamsterbase-highlighter Official web highlighter extension.
logseq-hamsterbase Sync your highlights and notes to logseq.
obsidian-hamsterbase Sync your highlights and notes to obsidian.
siyuan-hamsterbase Sync your highlights and notes to siyuan.