AI · alternatives · 2026

24 alternatives to Second Brain by Hexact

Your local AI knowledge base

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.

1
Second Brain for AI▲286
Persistent memory for Claude, ChatGPT & Cursor. Free.
May 2026 · github.com · its alternatives →
2
Findr: remember everything▲434
Unlock infinite digital memory with your (AI) second brain
2024 · usefindr.com · its alternatives →
3
Second Brain▲302
Hi 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 →
4
Second Brain for Mac and Windows▲247
Give your team one AI memory. Keep your own private.
Jul 2026 · thesecondbrain.dev · its alternatives →
5
SECOND BRAIN 2.0▲111
Get organized, get productive with Second Brain 2.0
2023 · oussamaltrx21.gumroad.com · its alternatives →
6
Notion Second Brain▲396
Organize your entire life with Notion
2023 · pathpages.com · its alternatives →
7
Smart Notes by MindPal▲146
The working memory for your AI second brain
2023 · mindpal.space · its alternatives →
8
TwinMind: AI Second Brain for Mobile▲228
Remember meetings, lectures, or your entire life for free
2025 · twinmind.app · its alternatives →
9
Second Brain▲20
Your digital knowledge management system
2025 · secondbrainapp.netlify.app · its alternatives →
10
LUCI Desktopfree▲360
Let your AI agents remember what you've seen
Sep 2026 · luci.memories.ai · its alternatives →
11
myReach▲285
Your second brain, powered by AI – ChatGPT for your things
2023 · myreach.io · its alternatives →
12
Second Brain Notion Template▲74
The simple & minimal life management system
2023 · harshitjain374.gumroad.com · its alternatives →
13
A Traders Second Brain.▲63
Organise your life with this all in one dashbaord.
2023 · albs.gumroad.com · its alternatives →
14
Mem 2.0▲312
Stop losing ideas with AI that recalls for you
2025 · mem.ai · its alternatives →
15
Notion Ultimate Second Brain▲75
Capture & organize your knowledge in notion
2023 · saidbad.gumroad.com · its alternatives →
16
Supreme Second Brain▲77
Taking notes was never easier than now
2022 · inotion.gumroad.com · its alternatives →
17
Your Second Brain, Built in Notion▲14
Capture ideas, manage tasks, and organize your life
2025 · its alternatives →
18
Notion Second Brain▲3
all your knowledge, projects, notes in one organized place.
2023 · easlo.gumroad.com · its alternatives →
19
Second Brain Labs▲97
Automate your sales, survey & support at scale, using AGI
2024 · sbl.so · its alternatives →
20
Supreme Second Brain▲109
The most aesthetic way to build a Second Brain with Notion
2023 · inotion.gumroad.com · its alternatives →
21
Second Mind▲103
Organize your work & life and make progress on your goals
2023 · processized.gumroad.com · its alternatives →
22
Vortn▲164
Your Company's AI Second Brain
2025 · vortn.com · its alternatives →
23
Claude-Mem▲115
AI agent memory, everywhere. claude-mem is open-source memory for Claude Code; cmem links it to any MCP client — Cursor, Codex, more — via one private link.
Dec 2025 · cmem.ai · its alternatives →
24
Solopreneur Second Brain▲66
A smarter way to organize your business
2024 · jay-rebel.com · its alternatives →

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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 →