There are many more content management apps now than before. The granddaddy of note-taking was Evernote, but now, there are many more. A good source of names for such is Reddit, whether for note-taking, productivity, task managers or pkms systems. Modern note-taking tools are no longer just for storing notes: they are becoming **flexible knowledge systems**, where the real difference lies in how they balance **files vs databases, offline vs cloud, and simplicity vs customization**. The three main contenders these days are Notion, for data flexible data management, Capacities for a visual thinking environment and Obsidian for offline and mobile private file and data storage. **Notion, Obsidian, and Capacities** as three different ways of structuring thought: - **Notion** is strongest as a **database-first system**: flexible properties, views, filters, tasks via databases, collaboration, and shareable pages. Its core logic is built around **blocks** and structured documents. - **Obsidian** is strongest as a **local, text-first knowledge tool**: stable editing, offline files, plugins, aliases, YAML properties, and notes that can later become databases through bases/plugins. It does not offer block-level editing and collaboration. - **Capacities** sits between them as a **thinking environment** or ‘studio for your mind’: object-based rather than database-heavy, with custom types like ideas, books, media, and notes. It focuses more on connected content than high-volume databases. So the comparison is really about three models of knowledge: **managing information (Notion), linking notes (Obsidian), or shaping concepts as objects (Capacities).** ## Summary description of Capacities Capacities is a billed as a ‘Studio for Your Mind’, a thinking environment. It allows you to create multiple types of objects from pages, images, tags and many custom types, including atomic notes, ideas, organizations, books, and media, with custom and customizable properties.  Other objects can easily be called from anywhere with @, and these links are then easily visualized with the graph view (which can display more or less detail). Text formatting is easy via the toolbar; you can insert headings with the #format. Capacities has improved dramatically since its release. The most valuable improvement has been the addition of a working mobile app (which was already the case for Obsidian and Notion. ## Summary of Obsidian Obsidian is a powerful note-taking and knowledge-management app that centres on local markdown files and a linked thinking workflow, enabling bidirectional links, graph visualization, and tags, and a powerful search to build a personal knowledge base. It emphasizes privacy, offline access, plugin extensibility, and a flexible, non-linear approach to organizing ideas, making it popular for researchers, writers, and lifelong learners who prefer a self-hosted, customizable environment over cloud-only solutions. The priority in [[Obsidian Features and Plugins]] is on local notes first, which can be used anywhere. The [Obsidian website](https://obsidian.md/?lang=en&utm_source=chatgpt.com) presents Obsidian as a **private, flexible knowledge management and note-taking application** designed to help users think more effectively. Unlike cloud-first note-taking apps, Obsidian stores notes locally as plain-text markdown files, giving users complete ownership of their data and ensuring it remains accessible offline. The philosophy is that your notes should belong to you, remain future-proof through open formats, and never be locked into a proprietary system. A key feature of Obsidian is its emphasis on **connected thinking**. Users can create links between notes, visualize relationships with an interactive graph, and build a personal knowledge base that resembles a private wiki. The application supports a wide range of workflows, from note-taking and journaling to research, project management, documentation, and ‘digital gardening’. An extensive ecosystem of plugins, themes, Canvas for visual thinking, and an open API allows users to tailor the application to their own way of working. Obsidian also offers optional services such as **Sync** for secure end-to-end encrypted synchronization across devices and **Publish** for turning notes into websites, knowledge bases, or documentation. Together, these features make Obsidian more than a note-taking app: it is a customizable platform for organizing information, developing ideas, and building a long-term personal knowledge system while maintaining ownership and control of your data. ## Notion for Data Management Notion is a flexible, cloud-based workspace that combines note-taking, databases, and collaboration within a block-based system. It excels at creating interconnected databases, views, and templates suited for personal and team projects, documentation, and knowledge management. However, its reliance on an online platform with limited offline capabilities, and concerns over data ownership, makes it best for users seeking a highly flexible, collaborative environment, though heavy or complex content can impact performance. Notion is a highly flexible platform for building and managing databases, offering a range of customizable views (table, board, gallery, list) and easy-to-use relational structures. Our post [[Evaluation of Notion with Example Databases]] reviews Notion’s strengths for medium-sized, eclectic collections – such as translation projects, issue tracking, SEO keywords, machine tools, news, films, plants, students, and job applications – highlighting its intuitive interface, powerful linking, and collaborative features. However, we note limitations, like the lack of robust offline access, some import/export challenges, and missing features such as annotation and global task management. We provide examples of real-world Notion databases, including their structure, use cases, and benefits for organization, analysis, and workflow optimization, and compare Notion with alternatives like Obsidian and Access, outlining which types of databases are better suited to each tool based on factors like offline availability, relational needs, and view options. Overall, Notion excels for visually rich, interconnected databases but may not be ideal for all note-taking or highly specialized database requirements. ### Notion integrations Available [Notion integrations](https://www.notion.com/en-gb/connections) include: Slack, Google Sheets, Google Drive, Calendly, Microsoft Teams, GitHub, Jira, Figma, Asana, Evernote, Salesforce, Zoom, GitLab, Zapier, Make (Integromat), Notion AI. Also available by type: - Pre-built connections - Custom integrations via the Notion API - Synced databases with external services - Embeds / link previews / content connections ## Comparison of Notion, Capacities and Obsidian To follow is a detailed comparison table of Notion, Capacities, and Obsidian, highlighting their strengths and weaknesses across features such as offline access, file ownership, media handling, backlinks, plugins, and database capabilities. ### Use of blocks The text contrasts how **Notion, Capacities, and Obsidian structure notes**, with **blocks** as the main dividing line. - **Notion** is built around blocks, which makes content modular and easy to rearrange. This fits its broader strength: **flexible databases, properties, and collaborative content management**. - **Capacities** is especially smooth in block use: blocks are **easy to select and manipulate**, making page-level organization feel more fluid than plain text editing. - **Obsidian**, by contrast, is **text-file based**, not block-based. So moving pieces of content is less direct: you often need to **create headings and reorganize through the outline**. This makes it feel more like a **local knowledge notebook** than a visual content manager. A useful connection here is that **block-based structure aligns with database thinking**: in Notion and Capacities, content can behave like modular units inside a system. **Obsidian links notes into knowledge**, but inside each note the structure is more linear and file-oriented. **Notion and Capacities optimize modular content handling; Obsidian optimizes local, offline, text-based knowledge work.** | Criterion | Notion | Capacities | Obsidian | | ---------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Local or online | Notion offline is rubbish. Have to click option to make this page available offline. | Capacities seems to be local as long as you have synced. | Local files with very efficient, fast sync. The best. | | Who owns the files | On server. Export is possible. | On server. Export to check | You own the files 100% on local machine | | Exporting | Exporting is possible, of databases and whole workspace | Not tested export but options exist | Export is never required; files are local. | | Importing content, media | Importing possible. Multiple files? Test importing multiple files to Notion | Content and objects are easily sent one by one to capacities on mobile and on desktop web with browser add-on. But the bulk import of pages severely lacking. Development in progress. | Import is easy. Particularly for bulk files and media. Txt to convert extension to MD. | | Use of images | Images are embedded, only accessible from the embedded page. No central image repository. | Capacities provides a ‘way in’ to your content through a central linked repository of images. | Images can be displayed in a base, accessed through backlinks, but this is less convenient. | | Additional content on images | Notion does have good features to comment on almost any object. | I love that you can add content to an image | Images are only described in the context of linked note. You could create additional notes to fully describe images but not as intuitive as capacities. | | Backlinks and context | Backlinks are hard to access, not well implemented | Capacities thrives on links, backlinks and context. | Backlinks are efficient, available on the side panel or in document but this is an option by note file (less convenient). | | Use of blocks | Notion uses blocks. | I actually really like blocks. In capacities they are easy to use and multiple blocks are easily selected. | Obsidian doesn’t use blocks. Note files are text only. Moving ‘blocks’ requires adding a heading and moving in the outline. | | Use as an editor | Editing is unstable, or it was. I gave up using Notion as an editor. | Editing seems generally solid | Obsidian is the most stable editor, no doubt. No lag. Local files. | | Plugins | There are [integrations for Notion](https://www.notion.com/en-gb/connections) | No pugins in Capacities but there are integrations | Obsidian thrives on plugins. Most useful are tasks. But there are 2,600. Including link to Antidote grammar checker, find orphan files and broken links. | | Task system | Notion has now implemented [a task system](https://www.notion.com/help/guides/getting-started-with-projects-and-tasks) based on a linked database | Capacities Pro includes a useful tasks function | | | Annotate PDF plugin | No plugins in Notion to annotate a PDF | No plugins in Capacities to annotate a PDF | The annotate PDF is a very useful plugin in obsidian. Otherwise it requires Adobe Reader. | | Graph view | Not integrated, uses Graphify, but the initial test failed | Capacities graph view is the most useful | I initially came to obsidian for graph view. But there’s something wrong with it. | | Databases | This is where Notion excels. Databases, properties, views and filters are easy to create. Although display is limited to recording pages. | Capacities isn’t for databases; it’s for linked content, background and research material. But not volume databases. | Obsidian notes are easy to turn into databases with the new bases core plugin. | | Formatting | Notion can use coloured text easily | Capacities can use coloured text easily | Obsidian can only highlight, italic or bold. | | [Text to Speech](https://feedback.capacities.io/b/1v35e680/feature-ideas/text-to-speech) | No TTS to my knowledge | TTS on Edge but doesn’t always work. TTS of a PDF. | There is an excellent TTS plugin (Aloud) for Obsidian | | Document aliases | No aliases in Notion | Aliasses now available in capacities | Obsidian allows you to create aliases to refer to documents. Useful for long documents | | Document properties | Documents have properties when in a database | Custom objects can have properties | Any note file can have YAML properties and enable it to be selected in a base. | | Bases | You create databases in Notion | Create collections | Any note file can be included in a base. This is a big advantage of obsidian. | | Sharing | Notion is good at sharing based on a single URL and you can publish a page. Also pages can be collaborative with team comments. | A capacities page can be shared by URL. Is it a public page or does recipient need a capacities account? No collaboration? | An obsidian page can only be shared within obsidian or if published with Obsidian Publish (extra cost). No collaboration. Obsidian is a personal knowledge tool. | | | | | | ## Conclusion In conclusion, Notion stands out for its flexible database management and collaborative features, making it ideal for organizing diverse information and projects. However, users should consider its limitations in offline access and certain advanced functionalities. When choosing between Notion, Capacities, and Obsidian, it’s important to match the tool’s strengths to your specific needs, whether that’s robust database views, seamless offline note-taking, or advanced linking and customization. Obsidian shines for fast sync and offline access, Notion for online shareable databases and Capacities for a thinking space, visual connections and easy linking ideal for research.