--- title: "SumizAI vs PenPage" url: "https://sumizai.com/alternative-to/sumizai-alternative-to-penpage.html" date: "2026-08-14T00:00:00+02:00" modified: "2026-08-14T00:00:00+02:00" description: "Looking for a PenPage alternative? SumizAI and PenPage side by side: price, licence, platforms and what each one actually does." tags: ["ai notes", "sumizai", "penpage", "alternative to PenPage"] --- # SumizAI vs PenPage Looking for a PenPage alternative? SumizAI and PenPage side by side: price, licence, platforms and what each one actually does. ## What PenPage is PenPage is a free, open-source, privacy-focused note-taking app that stores all notes locally in the user's browser. It requires no registration or login — just open the app and start writing immediately, with no welcome screen, signup form, or account to create. The source code is publicly available under the Apache-2.0 license, letting anyone verify exactly how the app handles user data. Key features: Storing data directly in the browser, with nothing sent to any external server, means notes stay physically on the user's device at all times. No registration requirement removes the typical entry barrier of an account and password — the app is ready to use the instant it opens. Open source code lets developers audit the data storage mechanism and lets the community submit fixes or new features. Self-hosting capability gives technical users full control over exactly where the app's code physically lives, instead of relying solely on the version hosted by its makers. Who it's for: PenPage appeals to people who value privacy over cloud-sync convenience — those who would rather know exactly where their data physically lives than trust an external service provider. Users needing a fast, temporary place to jot down a thought without creating yet another online account will find a natural tool here. Technical users who want to self-host their own instance on their own server will appreciate the availability of a self-hosted version. Use cases: In practice, PenPage works well when you need to quickly save a thought on someone else's computer — a library or workplace, say — without leaving a trace in the form of a logged-in account. Someone working on a sensitive document they don't want kept in any third-party cloud can use PenPage as a temporary, local notepad. A technical team can deploy their own self-hosted instance of PenPage on an internal company server, giving employees a private place for notes without sending them outside the organization's infrastructure. Pricing and business model: PenPage is entirely free and open source, released under the Apache-2.0 license. The absence of a subscription model or paid plans suggests the project is likely maintained by a community or as a passion project, without a typical profit-oriented business model. Limitations and what to watch for: Because data is stored only locally in the browser, clearing browser data or switching devices without first exporting notes can mean losing them. No cross-device sync built into the basic version means notes saved on one computer aren't automatically available on another, unless the user sets up their own sync through the self-hosted version. AI notes with no cloud trace: PenPage has no built-in AI model integration, but its local, private nature makes it a good place to paste a ai notes entry from a conversation with an assistant when you want that content to never touch any server beyond your own browser. For people working with sensitive topics in AI conversations — drafts of legal or medical documents, for instance — that local storage of ai notes can be a significant argument in its favor. What's worth checking before choosing: Before relying on PenPage as your primary notepad, it's worth building your own habit of regularly exporting notes, to guard against accidental data loss when clearing the browser. It's also worth checking whether you need sync across multiple devices, since the basic version of PenPage doesn't provide that automatically. Bottom line: PenPage is a simple, private, free notepad running locally in the browser, with no registration and nothing sent externally. Anyone who wants ai notes from AI conversations to land automatically in an organized, searchable file archive should consider a tool built around that workflow. A trust model built on verifiability: Unlike closed apps that ask users to trust their word about what happens with data, PenPage lets those promises be verified directly in the code. Anyone with programming knowledge can read exactly how the app saves data and confirm that nothing actually leaves the browser without the user's knowledge. That trust model based on verifiability rather than a marketing claim is increasingly rare among consumer apps. Simplicity as the foundation of privacy: No account, no password, no account-recovery process — all of PenPage's architectural simplicity flows directly from the decision to store data locally. The fewer moving parts a system has, the fewer potential security failure points it carries. That approach stands in contrast to many popular note apps that collect ever more user data in the name of a "better experience," while simultaneously expanding the surface area for a potential breach or leak. Accessibility without barriers: Because PenPage runs in the browser and requires no installation or account, it's accessible from any device with a web browser — a desktop, a laptop, even a tablet. That universal accessibility, combined with the lack of cross-device sync, creates a distinct usage pattern: each device holds its own independent set of notes, unless the user deliberately chooses to export and import data between them. For some users that separation is actually desirable — keeping work notes from a company computer apart from personal notes on a home laptop can be a deliberate choice rather than a limitation. The role of self-hosting for organizations: The self-hosted version of PenPage takes on particular importance for organizations under strict data-residency regulations — financial or medical institutions, say, that must demonstrate no data leaves their internal infrastructure. Deploying an instance on a company server settles the question of where data physically lives, since the answer is known and controlled by the organization itself. That certainty can be worth more than the convenience of a ready-made version hosted by a third party, especially when regulatory fines are on the line. Comparison with SumizAI: PenPage and SumizAI share a concern for user data privacy, but differ in content source and storage model. PenPage is a hand-written notepad running locally in the browser, with no account and no cloud. SumizAI generates ai notes from a conversation with an AI model — answers worth keeping land as Markdown files in a vault the user owns, stored as plain files on disk rather than in browser memory. Anyone who wants a simple, private notepad with no registration will pick PenPage; anyone who wants ai notes from AI conversations to land automatically in a durable file archive will find SumizAI the better-fitting tool. **Key facts** - Price: Free - License: Open Source ## 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. ## Where they differ - AlternativeTo's description of PenPage 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. - PenPage is open source (Apache-2.0), and SumizAI is not. If reading the source is what decides it for you, that is a real argument for PenPage. 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. - AlternativeTo's description of PenPage 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. - PenPage 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. - PenPage 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. Full side-by-side comparison table and pricing: [https://sumizai.com/alternative-to/sumizai-alternative-to-penpage.html](https://sumizai.com/alternative-to/sumizai-alternative-to-penpage.html)