second-brain
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Limitless Pendant Remembered Everything - Until the Future Moved On
This clever little meeting memory made forgetting optional and consent unavoidable. Then Meta bought the company, sales stopped, and a product built to preserve the past acquired a very short future.
Your Notes Have Been Asking for Better Plumbing
Capacities turns the shoebox of digital notes into a cast of people, books, meetings and ideas. The catch is deliciously specific: it works best when you are willing to stop thinking in folders.
Talk Now. Voicenotes Will Remember the Rest.
A voice recorder grew into a searchable memory for meetings, stray ideas, and the sentence you invent while walking the dog. The trick is knowing when to trust it, and when to keep a backup.
Saner.AI Wants Your Messy Brain, Not Your Filing System
Saner.AI turns brain dumps, inbox clutter and calendar loose ends into a plan you can approve. The idea is unusually humane; the young mobile apps still have some growing up to do.
HyNote Built 20 Apps Before It Found the One Million-User Habit: Stop Taking Notes
The small Palo Alto team stopped treating transcription as the product. HyNote's wager is that the winner will own the whole trip from a whispered thought or messy PDF to an action item, quiz, slide deck or shareable page.
jo
jo is a voice-first personal AI agent for macOS that runs on your Mac and a private, per-user cloud machine. Rather than waiting to be asked, it proactively summarizes what is on your screen, drafts emails, manages your calendar, clips relevant content, and keeps up with the loose ends of work and life. Built natively in Swift for Apple Silicon and backed by Y Combinator (W24), jo reaches users across Mac, web, iMessage, Telegram, and WhatsApp while keeping personal data local and out of model training.
Ideaflow
Ideaflow is a Palo Alto-based AI company building an 'intelligence amplification' layer for knowledge work. Its flagship product is a notebook that augments your thinking as you type, letting people capture and stitch together fragments of information. The company has since expanded into team knowledge tools - Base, which surfaces context from Slack, meetings, and documents, and meeting intelligence - aiming to become an organization's collective memory. Founded around 2015 by MIT Media Lab designer Jacob Cole and Etherpad/Meteor veteran David Greenspan, it has raised roughly $11M in seed funding from First Round Capital, 8VC, StartX, Naval Ravikant, and Tim Draper.
Jacob Cole
Jacob Cole is the CEO and cofounder of Ideaflow, a Palo Alto company building intelligence-amplifying software - a notebook and team knowledge platform designed to fuse human thinking with AI. A former MIT Media Lab collective-intelligence researcher who also studied at Oxford, Cole frames Ideaflow as a life mission: a future where 'nobody feels alone with their ideas.' The company has raised more than $10M from First Round Capital, 8VC, StartX, Tim Draper, and Naval, building a human-AI hybrid 'shared brain' for organizations.
Joseph Quan
Joseph Quan is the founder and CEO of Knoetic, the people-analytics platform and CPOHQ community that bills itself as the AI 'Second Brain' for Chief People Officers. He started the company in March 2020 with 25 HR leaders trading notes through the COVID crisis, then turned that group into a 2,000+ member network and a software business backed by $54M+ from Accel, Menlo, EQT and 150+ angels including Adam Grant. A two-time founder, Wharton/Berkeley graduate and Inc. 30 Under 30 alum, he returned as CEO to build Knoetic's AI product suite.
Mem
Mem is an AI-native notes app that doubles as a thought partner. Founded by Kevin Moody and Dennis Xu, the company is rebuilding personal knowledge management around a simple bet: you should never have to organize information again. Backed by the OpenAI Startup Fund and Andreessen Horowitz, Mem captures voice, web, and email inputs and resurfaces them at exactly the right moment.
Kevin Moody
Kevin Moody is the co-founder and CEO of Mem, an AI-powered knowledge management platform backed by OpenAI and Andreessen Horowitz. A Stanford Computer Science graduate who once worked at Google X on drone delivery, he spent five years quietly building toward a single obsession: making your past knowledge work as hard as your present focus. Mem has raised $34.7M and is redefining how individuals and teams capture, connect, and retrieve information at the speed of thought.
Tiago Forte
Tiago Forte is the founder of Forte Labs and creator of the Building a Second Brain methodology - a framework that has helped 20,000+ people in 70+ countries organize their digital lives and unlock creative potential. Author of the bestselling book of the same name (Simon & Schuster, 2022), named Financial Times Book of the Year, he has built one of the most influential productivity brands online, with 125,000+ newsletter subscribers and a YouTube channel crossing 100K subscribers. Known for the PARA method and Progressive Summarization, Forte turned his own struggle with information overload into a global movement.