Work · alternatives · 2026
24 alternatives to ZettelkastenAI
Second brain as it should be
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.
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Private AI chat & semantic search for Obsidian notes
Feb 2026 · github.com · its alternatives →
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A few months ago I noticed that I was quickly approaching my 10GB sync limit for my daily driver vault. I considered deprecating some of the heavier files and images, but I was worried how it would affect the integrity of my vault. Instead, I took the opportunity to think to myself -- what would the perfect vault look like? I began to write down some of the key philosophies and strategies I use in my driver vault which led to indispensable plugins, which led to more indispensable philosophies and on and on it went. I've chronicled these results into a fully working vault template that…
2022 · github.com · its alternatives →
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Hi HN, Nick here. We’re launching OpenKnowledge (https://openknowledge.ai/), a “what you see is what you get” markdown editor that has direct integrations with Claude, Codex, and other agents. Available as MacOS app or Web UI+CLI. Fully free/local and OSS. We built this because we wanted a Notion-like experience for writing and sharing markdown files across our team. Obsidian is the best alternative we tried, but found it doesn’t have a true WYSWIG UI and it didn’t integrate well with Claude/Codex outside of community plugins. So we built OpenKnowledge. It takes…
Jun 2026 · github.com · its alternatives →
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Calderafree▲195Your Obsidian vault as a living profile and linked garden
9d ago · caldera.social · its alternatives →
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Contribute to memgraph/odin development by creating an account on GitHub.
2023 · github.com · its alternatives →
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A Starter Kit to Manage Your Whole Life
2023 · start.linkingyourthinking.com · its alternatives →
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Quickly format your notes with ChatGPT in Obsidian - different-ai/obsidian-ava
2023 · github.com · its alternatives →
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Hey HN! Today we're launching Agent Vault - an open source HTTP credential proxy and vault for AI agents. Repo is at https://github.com/Infisical/agent-vault, and there's an in-depth description at https://infisical.com/blog/agent-vault-the-open-source-crede.... We built Agent Vault in response to a question that been plaguing the industry: How do we give agents secure access to services without them reading any secrets? Most teams building agents have run into this exact problem: They build an agent or agentic system and come to realize at some point…
Apr 2026 · github.com · its alternatives →
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An Obsidian vault your AI agents actually run
Jun 2026 · github.com · its alternatives →
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Here's something I realized: the most AI-native knowledge base isn't a SaaS product with an API. It's a folder of markdown files on your disk. Obsidian stores everything as plain .md files. That means Claude Code (or any AI tool) can grep, read, write, and traverse your entire knowledge base with zero setup. No API keys. No OAuth. No middleware. Just local file I/O. The only missing piece was sync. I wanted my vault on iPhone (iCloud), on Mac (local), and on GitHub (backup + version history) — without paying $4/mo for Obsidian Sync. cc-md is ~400 lines of bash. iCloud handles Apple…
Feb 2026 · github.com · its alternatives →
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Obsidian plugin that connects to CLI agents you already have installed. No built-in LLM integration, no API keys to configure in the plugin. It spawns your tool as a child process, pipes vault context into each prompt, and streams responses into a chat panel. Supports Claude Code, Opencode, and any custom binary via a generic adapter. Adding a new agent is a single file. Free, proudly Open Source (MIT licensed). Would love feedback on this for anyone that that tries it out.
Mar 2026 · github.com · its alternatives →
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We built OneCLI because AI agents are being given raw API keys. And it's going about as well as you'd expect. We figured the answer isn't "don't give agents access," it's "give them access without giving them secrets." OneCLI is an open-source gateway that sits between your AI agents and the services they call. You store your real credentials once in OneCLI's encrypted vault, and give your agents placeholder keys. When an agent makes an HTTP call through the proxy, OneCLI matches the request by host/path, verifies the agent should have access, swaps the placeholder for the real…
Mar 2026 · github.com · its alternatives →
- 13
Import your Obsidian Vault to Apple Notes
2025 · obsidiantonotes.com · its alternatives →
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Skip the setup and run OpenClaw & Hermes, fully managed
Aug 2026 · cloudways.com · its alternatives →
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Let AI navigate your Obsidian vault as a GRAPH, not files
Jul 2026 · github.com · its alternatives →
- 16
Master productivity and creativity with this Obsidian vault
2024 · parazettel.com · its alternatives →
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With this plugin you can create literature notes from BibTeX entries, display formatted reference lists, and instantly generate citations.
2024 · github.com · its alternatives →
- 18
ChatCBT is an AI-powered cognitive behavioral therapist for your local Obsidian notes. You have the choice to use OpenAI, or a 100% local model with Ollama for total data privacy. When you're done with your conversation, ChatCBT can automatically summarize the chat into a table listing your negative beliefs, emotions, categories of negative thinking, and reframed thoughts. This way you can start to recognize patterns in your thinking and begin to rewire your reactions to disturbing circumstances. Conversations are stored in markdown files on your local machine, ensuring privacy and…
2023 · github.com · its alternatives →
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Manage your whole life in Obsidian
2025 · linkingyourthinking.com · its alternatives →
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Consilience▲15A personal Palantir that’s as easy to use as Obsidian
Jul 2026 · consilience.md · its alternatives →
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Ready-to-use Markdown knowledge base for AI agent & Obsidian
Jun 2026 · payhip.com · its alternatives →
- 24
Also compare
- Obsidian Local LLM Helper alternatives
- A highly opinionated, fully functional Obsidian vault alternatives
- OpenKnowledge – open source AI-first alternative to Obsidian/Notion alternatives
- Caldera alternatives
- Odin – the integration of LLMs with Obsidian note taking alternatives
- Ideaverse for Obsidian alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →