SumizAI vs Sigilla

What Sigilla is

What Sigilla is

Sigilla is a reading inbox designed to stop digital hoarding. Instead of being a bottomless bucket where bookmarks pile up and never get read, Sigilla acts as a filter between the open web and a personal knowledge base built in Obsidian, Notion, or Logseq. It's a Swedish tool, available online only, running on a fully free model.

Key features

Sigilla works as a single place where links from articles, threads, and pages worth reading land, instead of being scattered across browser tabs, a "read later" email folder, and a notes app. The filter between the web and a knowledge base means only content actually read and judged worthwhile moves on into a permanent archive, rather than every link saved on a whim. Integration with popular PKM tools (Obsidian, Notion, Logseq) lets processed material move straight into the main notes system without manual copying. A simple, focused online interface skips the distracting features typical of full-blown RSS readers or bookmark managers.

Who it's for

Sigilla appeals to people accumulating dozens of unread articles in browser tabs and feeling growing guilt about it. Users of Obsidian, Notion, or Logseq who want a clear line between "a link to check out" and "a note worth keeping" find a natural go-between here. People deliberately limiting open tabs and notifications, looking for one organized place for reading material, are the main target audience.

Use cases

In practice, Sigilla is useful when you stumble across an interesting article mid-work but don't have time to read it right away — instead of opening a tenth browser tab, you save the link in Sigilla and return to it during a set reading time. A researcher gathering source material for a project filters dozens of links through Sigilla before deciding which ones make it into their Obsidian knowledge base. Someone doing a weekly review of industry news keeps every candidate article in one place instead of hunting through browser history.

Pricing and business model

Sigilla is entirely free, with no paid tier in its current form. That model, typical of smaller, niche tools at an early stage, lets the team build a user base and gather feedback before potentially introducing paid features down the line.

Limitations and what to watch for

The app is available online only, with no mobile or desktop version, which can be inconvenient for people who want to save links straight from their phone while browsing social media. The lack of the elaborate organizational features typical of full RSS readers means Sigilla deliberately stays a simple transit tool rather than a destination archive.

AI notes and manually moving content over

Sigilla has no built-in AI model integration, so if you want a fragment of an AI conversation to enter the same flow as other reading material, you have to paste it in manually as a link or text. For people who keep separate ai notes from conversations with ChatGPT or Claude, Sigilla can serve as a first stop — a place where such an ai notes entry waits to be reviewed before moving into the main knowledge base in Obsidian or Notion.

A reading ritual instead of a bottomless list

Many link-saving tools eventually turn into a graveyard of good intentions — hundreds of bookmarks nobody ever opens again. Sigilla enforces a different habit: the inbox is meant to be regularly emptied, not just filled, which on its own changes how a user treats every newly saved link. That simple shift in perspective — from archive to filter — is the main reason Sigilla appeals to people tired of classic bookmark managers.

Minimalism as a deliberate choice

The absence of advanced features — tagging, folders, full-text search — isn't a gap, it's a deliberate limit on the tool's scope. Sigilla isn't trying to compete with full-blown RSS readers or fully-fledged notes apps; it aims to fill the narrow gap between the two, leaving the actual organizing of content to whichever PKM app the processed material ends up in.

Daily discipline instead of a one-time cleanup

Sigilla's usefulness depends on how regularly the user comes back to it — the tool itself doesn't force a review of the list, it just makes that habit easier once it's already established. People who tried classic bookmark managers before and abandoned them after a few weeks often fall into a similar pattern here unless they set a fixed review time — fifteen minutes with coffee in the morning, say, before the real work of the day begins.

A place for short fragments, not whole archives

Sigilla works well as a stop for individual links and short text snippets, but it isn't designed to store elaborate documents or entire long conversations. Anyone wanting to keep whole ai notes from multi-turn sessions with an AI model will quickly find the tool handles a single, specific link better than it handles lengthy, multi-page content.

What's worth checking before choosing

Before making Sigilla a permanent part of your workflow, check that integration with your specific PKM tool works the way you expect, and that the lack of a mobile app won't get in the way of saving links day to day.

Browser-only availability

Because Sigilla runs as an online app with no native mobile client, saving a link from a phone means opening a browser and the tool's page, rather than a single tap in the system share sheet that mobile apps train users to expect. For some users that's a minor inconvenience; for others, a real reason to look for an alternative with native integration.

Bottom line

Sigilla is a simple, free tool that filters between a chaotic web and an organized knowledge base. Anyone who wants ai notes from AI conversations to enter such a system automatically, not just links pasted in by hand, should consider a tool built specifically around that workflow.

Comparison with SumizAI

Sigilla and SumizAI address different stages of the same problem — information overload. Sigilla filters what's worth reading before it enters a knowledge base. SumizAI turns conversations with an AI model directly into ai notes saved as Markdown files, skipping the manual copy-paste step entirely. Anyone struggling with a backlog of unread links will benefit from Sigilla; anyone who wants valuable answers from AI conversations to land straight in their own ai notes vault will find SumizAI the better-fitting tool.

What SumizAI is

A note-taking application built around a conversation with an AI model. You ask a question, the answer streams back, and the answers worth keeping become Markdown notes — filed into a vault that is a folder on your own disk.

A vault is a directory holding base.md, a generated table of contents up to six levels deep, and a notes/ folder with one .md file per note. Before a note is written it is checked against the ones already there, so the fourth note about the same idea gets merged instead of added. Links between notes are ordinary Markdown links to files that exist.

The model is never ours: you bring your own API key to one of seven providers — Anthropic, OpenAI, Gemini, Groq, OpenRouter, a local Ollama or your own server — and pay that provider directly. A question sends the table of contents plus at most five relevant notes within a 24,000-character budget, and the app shows you which five it used.

Every answer kept this way becomes one of these ai notes, ready to search again months later without hunting back through old chats.

Side by side

Where they differ

• AlternativeTo's description of Sigilla does not mention an AI model. That is the whole starting point in SumizAI: you have a conversation with a model on your own API key, and the answers worth keeping become notes without you filing them.
• Sigilla is free and SumizAI costs a dollar a month after a seven-day trial that takes no card. A dollar is what it costs to run accounts and licences without reselling the model; if free is the requirement, Sigilla wins that row outright.
• AlternativeTo's description of Sigilla does not mention Markdown, so check what format your notes end up in before you fill it up. SumizAI writes standard .md files to a folder you picked, and an unpaid account can still export all of them.
• Sigilla runs in the browser. SumizAI is a desktop and mobile application, and on the desktop the vault is a folder on your own disk rather than a document in someone's cloud.
• Both are run from the EU: SumizAI's operator is registered in Poland and the servers are in Germany.

Which one to pick