BrainTool – Beyond Bookmarks, a Topic Manager for your online life
Long time looker, first time Show-er here! I built the initial BrainTool to scratch a personal itch - to unify my bookmarks and online resources with text-based notes. I've spent the last several months iterating on it with feedback from early adopters and UX volunteers. It's finally at the point where I feel confident enough to seek this communities feedback. BrainTool is a browser extension that makes it easy to save pages of interest into a personal 'topic' hierarchy, along with associated notes. Your topics are shown in an editable side panel which can also control the browser - opening…
BrainTool – Beyond Bookmarks, a Topic Manager for your online life launched on August 18, 2021 with 10 votes, #1,345 of 2,953 launches that month and more than 75% of that year's launches.
In plain words
BrainTool is a browser extension that organizes bookmarks and web pages into a personal topic hierarchy with associated notes. Users can save pages of interest into an editable side panel that displays their topics and controls browser tabs, tab groups, and windows by topic. It combines bookmark management, tab organization, and note-taking in one tool, designed for people who want to unify their online resources and maintain structured information about the pages they save.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Long time looker, first time Show-er here! I built the initial BrainTool to scratch a personal itch - to unify my bookmarks and online resources with text-based notes. I've spent the last several months iterating on it with feedback from early adopters and UX volunteers. It's finally at the point where I feel…
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BrainTool 0.9.9a – still seeking feedback from this group2022 · braintool.org · ▲5BrainTool is a way of organizing things you want to remember and get back to, using notes and nested Topics. Its also a better way to control your browser.
Brainio2020 · brainio.com · ▲190Brainio combines rich-text notes with visual mind maps. Organize your thoughts, link ideas, and collaborate in real time across desktop and web.
I built a tool to help you read Hacker News on Kindle2022 · ktool.io · ▲393Hi HN, I'm Daniel Nguyen. In June, I quit my job to start indie hacking full-time. The idea of KTool first came to my mind when I was reading "Ask HN: I'm a software engineer going blind, how should I prepare?"[0] I've been wearing glasses since I was 5. My right eye is basically blind. Doctors said there is no chance to cure it. I was genuinely scared. Like holy shit, if my left eye stops working, my life is done. Since then I've been very conscious about time spent on computer screens. That's when I started using Kindle-related products: to offload as many reading materials as possible to…
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Source: Show HN post ↗ · launch text quoted in part
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