There are patterns in what you save. You just cannot see them yet.

That article about organizational design from January relates to something you saved last week about system architecture. Both are about coordination costs, but in completely different domains. Those connections are where the interesting ideas are, and you would rarely find them on your own.

Connections You Cannot See

Much of the value in what you read is in how ideas relate to each other, more than in any single article. But nobody can hold 200 articles in their head and find patterns across months of reading. Most tools for saving articles help you save them or read them, and leave that part to you.

That was my problem too. I read things that were connected, but it took me a while to notice, and noticing depended entirely on me making the association. I built Resona to show you those connections as soon as they appear.

The Resonance Metaphor

The name comes from resonance, the phenomenon where frequencies align and amplify each other. When you strike a tuning fork, nearby objects tuned to the same frequency start to vibrate.

Ideas work in a similar way. You save an article about why startups break at 20 people. Months later, you save something about database sharding. Different domains, same underlying pattern: systems that worked at small scale need different coordination mechanisms at larger scale.

Each article has its own frequency, a core idea or theme. On their own, articles fade into your archive. Resona looks for the ones that share a frequency.

The metaphor runs through the product:

• Signal Extraction removes the noise to find the core ideas
• The Weekly Digest surfaces harmonics, themes that appear across articles
• Chat works like a tuning fork: ask a question and see which articles respond

What Resona Does

Save without organizing. A browser extension saves any article in one click, with no folders or tags to decide on.

Extract the signal. AI processes each article to extract the core ideas: a summary, key points, notable quotes and actionable items. You get the main ideas without reading everything.

Surface connections automatically. Every week, a digest shows patterns across your library: "These two articles from different months share a theme. Here is what they say together." This is the feature Resona is built around.

Chat with your library. Ask questions like "What have I saved about team scaling?" and get answers drawn from your saved content, with sources.

The Weekly Digest

Most knowledge tools ask you to do the work: highlight, annotate, organize, review. With Resona, the digest comes to you.

Even if you never open the app, every Sunday you receive:

• This week's saves with one-line summaries
• Connections detected across your library: articles that share themes you would not have noticed
• Worth revisiting: content from weeks ago, resurfaced before you forget it

The digest is most useful when it connects two articles you saved months apart in completely different contexts. For example, an article about jazz improvisation and one about remote team coordination, both about synchronizing without visual cues.

Try It

Resona is live. There is a free tier to try it, and Pro costs $8/month for unlimited saves and full weekly digests.

I am building it for people who save things and suspect there are patterns they cannot see, and who want their past reading to inform what they think today.

If you have ever read something and thought "this connects to something I saved before" but could not remember what, Resona finds that connection for you.

Try it at useresona.com.