SumizAI vs Joplin

What Joplin is

What Joplin is

Joplin is a free, open-source note-taking app that earned PCMag's Editors' Choice award in the open-source notebook category. Notes are written in Markdown or a WYSIWYG rich-text editor, with support for images, video, PDF files, audio recordings, math expressions, and diagrams directly inside a note.

Key features

End-to-end encryption (E2EE) guarantees that only the user can access their note content, even when syncing through an external cloud service. Sync works with Joplin Cloud (the makers' own service) as well as Dropbox, OneDrive, WebDAV, and other popular providers, so users aren't locked into a single platform. A browser extension (Web Clipper) for Chrome and Firefox lets you save entire web pages as notes in one click. A plugin and theme system lets you adapt the interface and functionality to your own needs, and Joplin Cloud adds note sharing and real-time collaboration.

Who it's for

Joplin appeals to people looking for a fully free alternative to paid notebooks who still don't want to give up encryption or flexible sync options. Users who value open data formats and the option to self-host their own sync (say, through their own WebDAV server) will find in Joplin a tool designed around full control over data.

Use cases

In practice, Joplin works well for gathering research material straight from the browser via the Web Clipper, for keeping an encrypted personal journal synced between phone and computer, or for team collaboration on a shared knowledge base through Joplin Cloud, sharing selected notes with colleagues.

Pricing and business model

The app itself is entirely free on every platform, with no feature limits. Joplin Cloud — an optional hosted sync and collaboration service running on EU-based infrastructure — is paid, but sync can just as well run for free through your own Dropbox, OneDrive account, or a WebDAV server, if you'd rather not pay for the makers' hosted service.

Limitations and what to watch for

The terminal version of the app, while present, has a more limited interface than the graphical versions and requires getting comfortable with command-line use. Setting up sync through an external provider (say, your own WebDAV server) can be trickier for less technical users than just using the ready-made, paid Joplin Cloud service. The rich-text and Markdown editors have slightly different formatting capabilities, so switching between them within one note sometimes leads to small visual inconsistencies.

AI notes pasted in with formatting intact

Joplin doesn't integrate directly with language models, but Markdown and rich-text support means pasting a fragment of an AI conversation as a ai notes entry keeps its formatting (lists, bold text, code blocks) with no extra work. End-to-end encryption also means a ai notes entry saved in Joplin stays inaccessible to anyone but the user, even when synced through an external cloud.

Web Clipper as an extra source of material

Joplin's browser extension lets you save not just whole pages but also selected snippets of text directly as new notes, making it a natural complement to a research workflow — alongside notes written by hand or pasted in from AI conversations, source material collected straight from the web accumulates in the same app.

Version history and local backups

Joplin automatically saves earlier versions of a note with every significant change, letting you roll back to the state before an accidental deletion without relying solely on an external backup. For someone regularly pasting in AI-conversation fragments as ai notes and editing them later, version history acts as a safety net — accidentally overwriting a valuable ai notes entry doesn't mean losing the content for good, as long as the change gets noticed quickly enough.

What's worth checking before choosing

Before installing Joplin, check whether your preferred sync method (your own cloud or paid Joplin Cloud) meets your privacy and convenience requirements, and test the Markdown editor on real notes you plan to migrate over from another app.

A terminal client for command-line workflows

Alongside the graphical desktop and mobile apps, Joplin offers a full-featured terminal client that lets you browse, edit, and sync notes without leaving the shell. Developers used to working in a terminal can paste log fragments, error messages, or command output directly into notes, without switching back and forth between the graphical app and the terminal window.

Bottom line

Joplin is a free, encrypted, open-source notebook with flexible sync and a web-page-clipping extension. Anyone who wants ai notes from AI-assistant conversations to land in an encrypted, searchable archive without paying for the app itself will find a solid foundation in Joplin, though without automatic generation of such notes from a conversation.

Comparison with SumizAI

Joplin and SumizAI differ in where note content comes from and in business model. Joplin is a free app for notes written by hand by the user, with optional paid cloud sync. SumizAI costs $1/month and generates these notes automatically from a conversation with an AI model connected through your own API key, saving them as Markdown files in the user's vault. Anyone who wants a free, encrypted notebook for hand-written notes will pick Joplin; anyone who wants these notes to arise automatically from an AI conversation will find SumizAI the better-fitting tool.

That is our reading of the record. For AlternativeTo's own wording, see its page for Joplin — the facts above were read on 2026-08-16.

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 Joplin 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.
• Joplin is open source, and SumizAI is not. If reading the source is what decides it for you, that is a real argument for Joplin. The guarantee SumizAI offers instead is structural rather than legal: the notes are Markdown files in a folder you chose, so they open in any editor whether or not the application is running.
• Joplin is freemium: there is a free tier and a paid one, and the line between them is the thing to read before committing. SumizAI has one plan at a dollar a month, so there is no feature held back for a higher tier — and an unpaid account still opens and exports every vault it already has.
• Both keep Markdown, which makes moving between them mostly a matter of copying files. In SumizAI a vault is a directory holding base.md — a generated table of contents — and a notes/ folder with one .md file per note.
• Joplin advertises encryption. SumizAI answers the same worry a different way: on the desktop the notes never leave your disk, and the material a question sends to the model is capped at the table of contents plus at most five notes — and the app shows you which five it used.
• Joplin can be self-hosted. SumizAI has nothing to host on the desktop — the vault is a folder on your machine — and if you want the model on your own hardware too, a local Ollama is one of the seven providers it speaks to.
• Joplin also does tasks. SumizAI does not — no boards, no due dates, no projects. It files knowledge, not work.

Which one to pick