Work · alternatives · 2026
24 alternatives to Domvault – self-hostable second brain with consent-based note sharing
Hi HN, wanted to translate this into a more human-readable post - please see below and would love any and all feedback! What is it: A second brain you self-host and engine to compound itself and spark new ideas, from your own ideas. Why: ROI on your own knowledge, actually realize the value from your ideas. Down the line I'd love for this to evolve into a wider / shareable concept -- Haven't fully figured this out yet which is part of the reason I am posting. View the /constellation folder for the specs on that concept. (Self hosting engine is all in the repo as well) Looking…
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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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 →
- 2
Persistent memory for Claude, ChatGPT & Cursor. Free.
May 2026 · github.com · its alternatives →
- 3
Liminal▲116A workspace & 2nd brain for you, your agent, and your team
Jul 2026 · useliminal.xyz · its alternatives →
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Browserfly▲203Hey Hackers! I've had this idea stuck in my head for a while: what if an AI could actually use my browser for me? I mean, not on some virtual machine in the cloud like ChatGPT agent, but right on my own browser. I finally decided to just build it and see what would happen. I wrote a quick MVP, and honestly, I didn't expect much. But then... it started doing things. On its own. It figured out how to use search engine to find what I needed, read a webpage to answer my questions, and even it can organize my chaotic mess of tabs into neat groups. It was a genuine "whoa" moment for me. That's…
2025 · browserfly.app · its alternatives →
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Hi HN, I've been waiting to post what I've been working on for a few weeks now:) Today we're launching LayerVault, which is a version control system made for designers. The URL is http://www.layervault.com LayerVault keeps track of what you're working on without adding extra steps to your process. The app runs in your toolbar and tracks changes you make to your files. Basically — each time you create or modify a file you’re working on, LayerVault saves a copy. You can then login, flip through its versions, and download a version from a few weeks ago. It's pretty neat — and we’ve built some…
2011 · layervault.com · its alternatives →
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SuperBrain▲77Self-hosted, AI-powered second brain for Android
Apr 2026 · github.com · its alternatives →
- 10IB
Field notes on shipping fast, privacy-first, evergreen web products.
2021 · joeldare.com · its alternatives →
- 11
Hi HN, I'm Kevin. I built ContextVault because I kept running into the same problem with AI tools. Every project accumulated prompts, coding conventions, architectural decisions, examples, and other pieces of context that made the models significantly more useful. The problem was that this information quickly became fragmented. Some lived in ChatGPT Projects, some in Claude, some in Markdown files, some in internal documentation, and some only existed in previous conversations. Late last year, I realized several people on our team were solving the same problems independently because previous…
Jul 2026 · contextvault.dev · its alternatives →
- 12
A powerful 15-in-1 Notion Template for all your needs
2023 · notionparadise.gumroad.com · its alternatives →
- 13
Second Brain▲11Second Brain is a free for creating and sharing content
2024 · 2ndbrain.vercel.app · 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 →
- 15HC
Hi guys, long time lurker, first time (non-comment) submission. I've been working on homebrewvault.com (mostly nights) for what seems like forever. I'm just about finished with the core product and am almost ready to do some promotion. I've always followed the "Show HN" submissions because they seem to produce really valuable feedback. So before I take the plunge, I'd love to hear what you guys think. I'm also going with the "if you aren't embarrassed by your first release, you aren't releasing early enough" philosophy I first learned of here. For a little more background: As a homebrewer of…
2011 · its alternatives →
- 16
I'm sharing my public Second Brain - a digital Zettelkasten that connects my knowledge across Data Engineering, Personal Knowledge Management, Programming, Productivity, and philosophical topics like Digital Minimalism. Built with Obsidian and published using Quartz/GoHugo, this knowledge vault contains interconnected notes that I've crafted, curated, and connected over years. I've developed a streamlined publishing workflow where I simply add #publish to any note I want to make public, then run make deploy through a custom Rust script that's 30x faster than my original Python…
2025 · ssp.sh · its alternatives →
- 17SO
Hey HN, My co-founders and I have been working on a project for the last month or so, and we'd like to get your input on it. We wanted to hear your thoughts on what we're doing - so check out our landing page, and let us know what you think/understand. Does it sounds like something you guys would want to use? http://www.thesharedweb.com/alpha/intro We'll tell you guys more about exactly what we're doing as the conversation evolves, but we just wanted to see what the initial reaction is, and what you understand (i.e. are we describing it in a way that makes sense). Really excited to hear your…
2010 · thesharedweb.com · its alternatives →
- 18IB
Hi HN, I have been working on a new tool that was inspired by Vannevar Bush's memex and Luhmann's Zettelkasten. Having been a long time user of different tools, I got to the point where I decided to build my own. For the longest time I have been looking for something that puts association first, works as fast as the mind, and allows you to stay in flow state. Making building a second mind, playful and rewarding. If anyone is interested, I have added the link below. At this point I am slowly letting on the first users, and hoping to gather as much feedback as possible. The explore link on the…
2020 · its alternatives →
- 19
Never take boring notes again. Youtube summaries, automated.
2024 · chromewebstore.google.com · its alternatives →
- 20
Hi HN, I'm the creator of epress. After a lot of work, I'm excited (and a bit nervous) to finally share it with you. For years, I've been feeling like a digital tenant on the platforms I use every day. My content, my social graph, my online identity—they were all stored on someone else's servers, subject to their rules, algorithms, and business models. I could be de-platformed, my data could be sold, or an API I relied on could suddenly be put behind a paywall. I looked into existing decentralized alternatives. While many are great projects, I found they often shifted the trust from a big…
2025 · github.com · its alternatives →
- 21
organization and project management
2024 · notionagence.com · its alternatives →
- 22
I have a short term memory and i have no passion to writing but i want to learn to write something, so i need my note as my second brain, but i need not only note app, i want to freely to write something from my mind, and set some to-do list, so i decide to create one web application that fit to my requirement. And here is my final product that you can try and maybe give me some feedback. This is a free application. Access https://paperly.id for detail
2025 · paperly.id · its alternatives →
- 23PB
I am a software engineer working alone on a passion project, a website that helps you stay organized easily and efficiently. Headspace.io is a webmail, notepad, task list and calendar, all rolled into on. The basic premise is that any data in Headspace can be "tagged" and then all relevant information for a particular tag can be displayed in one screen. This is a pre-beta build and I'm hoping to get some early feedback from the wise and generous HN folks. Would you pay a small monthly fee ($5 maybe) for a service like this? http://app.headspace.io/ (This is pre-production so…
2013 · its alternatives →
- 24
all your knowledge, projects, notes in one organized place.
2023 · easlo.gumroad.com · its alternatives →
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