Freedom251 › Personal Knowledge Management Software
Continuum
What Continuum is
Continuum is a free, open-source note-taking app for linked thinking that describes itself as a second brain. Users write Markdown notes and connect people, projects, or topics with @mentions and #mentions. These mentions become backlinks and automatically form a personal knowledge graph without folders or a fixed hierarchy. Notes and entities receive relevance scores based on interactions, helping the app bring less-used insights back into view. Entities can record mentions, time invested, and connections. Native sync keeps the knowledge graph available across devices. Users can import folders of Markdown files from Obsidian, Logseq, or plain Markdown, then review detected entities and mentions before creating them. Continuum presents itself as an Obsidian alternative with backlinks, native sync, a mobile-first interface, and relevance scoring. Its full code is public on GitHub for auditing how notes are stored and processed. The Free plan costs nothing and includes notes, entities, the knowledge graph, and native sync; no credit card is required to start.
Who it suits
Continuum suits people who organize notes through links, mentions, and a personal knowledge graph. It also fits users moving Markdown folders from Obsidian, Logseq, or plain Markdown.
What it does well
- Free plan includes notes and knowledge graph
- Native sync across devices
- Mentions create backlinks automatically
- Imports Markdown folders
- Open-source code is public on GitHub
What to know first
- Relevance scores depend on user interactions
- Imported entities and mentions require confirmation
- No paid-plan details are listed
Limits
The listed Free plan costs nothing and includes notes, entities, the knowledge graph, and native sync. No other plan limits are given.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | notes · entities · knowledge graph · native sync | Free |
| Free | Markdown notes · Entities · Knowledge graph · Native sync | Free |
As continuum.onl lists them, read 11 Oct 2026. The maker's own page has the final word.
Getting started
- Open https://continuum.onl/
- Start the Free plan at no cost
- Create Markdown notes and connect items with @mentions or #mentions
- Import Markdown folders from Obsidian, Logseq, or plain Markdown
- Confirm detected entities and mentions during import
Verdict
Continuum centers note-taking on links, backlinks, and resurfacing forgotten material. Its free plan, Markdown import, and public code make it suitable for linked-thinking workflows.
Questions
What does Continuum cost?
Its Free plan is priced at $0.
Is Continuum open source?
Yes. Continuum says its full code is public on GitHub.
Which files can I import?
You can import folders of Markdown files from Obsidian, Logseq, or plain Markdown.
Does it sync across devices?
Yes. Native synchronization of the knowledge graph is included.
Is a credit card required?
No credit card is required to start the free plan.
Facts from Continuum's own pages
- Backlinks
- Mentions of people, projects or topics become backlinks, without requiring folders or a rigid hierarchy. · continuum.onl, 11 Oct 2026
- Entity tracking
- The site says entities track mentions, time invested, and connections. · continuum.onl, 11 Oct 2026
- Free plan
- The free plan includes notes, entities, the knowledge graph and native sync, with no credit card required to start. · continuum.onl, 11 Oct 2026
- Getting started
- The site says no credit card is required to start the free plan. · continuum.onl, 11 Oct 2026
- Import
- Continuum says users can import folders of .md files from Obsidian, Logseq, or plain markdown, with entities and mentions detected for confirmation. · continuum.onl, 11 Oct 2026
- Intended users
- The site presents Continuum as a second brain and note taking app for linked thinking. · continuum.onl, 11 Oct 2026
- Knowledge graph
- Continuum says mentions become backlinks and build a personal knowledge graph automatically. · continuum.onl, 11 Oct 2026
- Markdown import
- Users can import folders of Markdown files from Obsidian, Logseq or plain Markdown, then confirm detected entities and mentions before creation. · continuum.onl, 11 Oct 2026
- Notes
- Users write markdown notes and link people, projects, or topics with @mentions and #mentions. · continuum.onl, 11 Oct 2026
- Obsidian alternative
- The site presents Continuum as an Obsidian alternative with backlinks, native sync, a mobile-first interface, and relevance scoring. · continuum.onl, 11 Oct 2026
- Open source
- The site describes Continuum as open source and says its full code is public on GitHub for auditing how notes are stored and processed. · continuum.onl, 11 Oct 2026
- Product
- Continuum describes itself as a second brain and note taking app for linked thinking. · continuum.onl, 11 Oct 2026
- Relevance scoring
- The site says notes and entities receive relevance scores based on user interactions, which surface forgotten insights. · continuum.onl, 11 Oct 2026
- Resurfacing
- A relevance score ranks notes and entities from usage, and the app brings forgotten notes back automatically. · continuum.onl, 11 Oct 2026
- Sync
- Continuum advertises free native sync of the knowledge graph across devices. · continuum.onl, 11 Oct 2026
Where Continuum stands on Freedom251
- Personal Knowledge Management Software#21 of 32
- Note-taking apps#161 of 216