AI · alternatives · 2026
24 alternatives to Second Brain Joiner (Android)
Merge Obsidian notes to AI in seconds. Now on Android! 🚀
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
The ultimate AI & PDF toolkit for Obsidian on iOS.
Mar 2026 · apps.apple.com · its alternatives →
- 2
Second Brain▲281Hi HN, I'm Dom, a solo founder. I built Second Brain to solve a common issue I had with AI chats: the knowledge disappears. There’s no structure, no memory, and no way to reuse or build on them. So I built a tool that combines AI chat with a visual, interconnected knowledge system. Key features: - Save AI responses into editable docs (Notion-style Pages). - AI Visual board with multiple content & chat nodes (like Miro meets ChatGPT). - Add and chat with YouTubes, TikToks, Audio, PDFs, GitHub repos, Looms, websites, etc. - Organize using Projects and Smart Tags — then chat with full contexts.…
2025 · second-brain-lac-ten.vercel.app · its alternatives →
- 3
Persistent memory for Claude, ChatGPT & Cursor. Free.
May 2026 · github.com · its alternatives →
- 4
Saner.AI▲677Initially, we thought about this feature due to a bug in our chat interface. And surprisingly, I noticed that POE has just released the same feature. But the distinction is: with us the Multi-bot is designed to streamline the notetaking/working experience -> It allows user to search for external knowledge without switching context Though we are still in the beta phase, I would love to hear your thought/feedback on it :)
2024 · saner.ai · its alternatives →
- 5
Obsidian Mobile brings the power of our desktop app to your mobile devices.
2021 · obsidian.md · its alternatives →
- 6
Reor is an open-source AI note-taking app that runs models locally. The four main things to know are: 1. Notes are connected automatically with vector search. You can do semantic search + related notes are automatically connected. 2. You can do RAG Q&A on your notes using the local LLM of your choice. 3. Embedding model, LLM, vector db and files are all run or stored locally. 4. Point it to a directory of markdown files (like an Obsidian vault) and it works seamlessly alongside Obsidian. Under the hood, Reor uses Llama.cpp (node-llama-cpp integration), Transformers.js and Lancedb to power…
2024 · github.com · its alternatives →
- 7
Contribute to memgraph/odin development by creating an account on GitHub.
2023 · github.com · its alternatives →
- 8
- 9
Unlock infinite digital memory with your (AI) second brain
2024 · usefindr.com · its alternatives →
- 10
The new Claude Android app brings the power of Claude
2024 · claude.com · its alternatives →
- 11
Give your team one AI memory. Keep your own private.
Jul 2026 · thesecondbrain.dev · its alternatives →
- 12
Remember meetings, lectures, or your entire life for free
2025 · twinmind.app · its alternatives →
- 13
Quickly format your notes with ChatGPT in Obsidian - different-ai/obsidian-ava
2023 · github.com · its alternatives →
- 14OS
My Public Second Brain (https://brain.sspaeti.com) is built with the help of a wonderful tool called Quartz (https://brain.sspaeti.com/quartz-publish-obsidian-vault/). Obsidian (https://brain.sspaeti.com/obsidian/) has become my favorite for note-takers, given its flexible and linked structure that closely mirrors our natural way of thinking. With Quartz, I was able to seamlessly publish my Obsidian notes to a public vault, providing the groundwork for my Public Second Brain. The journey of making this possible involved some scripting as…
2023 · its alternatives →
- 15
Brainstream▲114Agentic AI notes: smart search, briefs & tasks
Feb 2026 · usebrainstream.app · its alternatives →
- 16
SuperBrain▲77Self-hosted, AI-powered second brain for Android
Apr 2026 · github.com · its alternatives →
- 17
Ready-to-use Markdown knowledge base for AI agent & Obsidian
Jun 2026 · payhip.com · its alternatives →
- 18
Bindly▲76Hi HN, I’m a product designer by background, not a traditional software engineer. Over the last year, tools like Claude and ChatGPT completely changed how I work. I started with small internal tools, and now I’m “vibe coding” multiple highly personalized apps. As I iterated between Claude Code (implementation) and ChatGPT (ideation / thinking), I kept running into the same problem. To think clearly, I had to repeatedly re-explain: - what the code currently does, - what changed recently, - and why certain decisions were made. That re-summarization step became a real bottleneck. So I…
2016 · bind.ly · its alternatives →
- 19
hi my name is sean dorje (yc x25). i built harmony because our team's been running on discord for years and we've been dying for something like this so we can finally track our meeting notes/action items. if your team runs on discord, please feel free to try it out! it's free to use forever :)
Jan 2026 · harmonynotetaker.ai · its alternatives →
- 20
Quickly format your notes with ChatGPT in Obsidian - different-ai/obsidian-ava
2022 · github.com · its alternatives →
- 21
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 →
- 22
An Obsidian vault your AI agents actually run
Jun 2026 · github.com · its alternatives →
- 23
Tikpal▲24We’re building Tikpal, an AI voice productivity tool based on a simple principle: Human creativity should remain the core engine. AI should be an accelerator, not the protagonist. The goal is to reduce screen dependency and cognitive fragmentation, and let people work in a more natural “voice-first” flow. Instead of clicking through interfaces and context-switching between apps, you talk to Tikpal, and it helps you think, structure ideas, and execute tasks. Three layers we are focusing on: FOCUS — Tools like Pomodoro, breathing cues, ambient audio, and micro-interactions to create sustained…
Dec 2025 · tikpal.ai · its alternatives →
- 24
The official AI assistant by Anthropic, in your back pocket
2024 · play.google.com · its alternatives →
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