Obsidian.md
Notion
Logseq
Joplin
Roam Research
Evernote
Standard Notes
TiddlyWiki
SpawnGraph
Miro
Mapify
Xmind
LucidChart
MindMeister
Mural
FigJam
SpawnGraph turns any PDF, URL, YouTube video, Word doc, PowerPoint, EPUB, or 90+ other file formats into an editable hierarchical mind map in seconds. All natural-language processing runs entirely in your browser โ no data uploads, no AI API costs, no signup required. Real-time multi-user collaboration is included on every plan including the free tier. Built for students, researchers, consultants, and content creators who need to synthesize source material fast.
Key differentiators: โข Browser-native NLP โ verifiable in DevTools, your content never leaves your device during generation โข 93+ file formats supported (PDFs, Word, PowerPoint, EPUB, YouTube transcripts, images via OCR, audio via Whisper WASM) โข Real-time multi-user collaboration on every plan including free โข No per-seat pricing โข Free tier is the product, not a trial
Obsidian.md SpawnGraphSpawnGraph's answer:
SpawnGraph is the only mind mapping tool that combines three things in one product: (1) browser-native natural-language processing โ every PDF, document, and transcript is parsed entirely client-side, so your content never reaches our servers and you can verify it in DevTools โ Network; (2) automatic mind map generation from 93+ source file formats including PDFs, Word, PowerPoint, EPUBs, YouTube transcripts (auto-fetched), audio recordings (Whisper WASM), and images (Tesseract OCR); and (3) real-time multi-user collaboration with named cursors on every plan including the free tier, with no per-seat pricing. Every other tool in the category sends your content to a cloud AI service, charges per generation, or locks collaboration behind a paid tier.
SpawnGraph's answer:
Three reasons:
Speed-to-first-map. Drop a 30-page research paper and SpawnGraph produces a hierarchical mind map in under 2 seconds. Tools like MindMeister, Miro, and Whimsical require you to type every node yourself. AI tools like Mapify or MyMap upload your document, charge per generation, and wait several seconds for a model round-trip.
Genuine privacy. Confidential pre-prints, interview transcripts, legal contracts, embargoed materials โ none of it leaves your browser during generation. This isn't a marketing claim; open DevTools โ Network and watch zero outbound requests during a generation. Critical for researchers, lawyers, and anyone working with sensitive content.
Free tier is the product, not a trial. Miro caps you at 3 editable boards. MindMeister at 3 maps. Heptabase has no free tier at all โ just a 7-day trial. SpawnGraph's free tier covers 2 saved mindmaps, 8 export formats including watermarked PNG, real-time collaboration with up to 5 editors per board, and unlimited generation from any of 93+ file formats. Solo Pro at $5/month annual unlocks unlimited boards and the full export set โ but the free tier is genuinely usable forever.
SpawnGraph's answer:
SpawnGraph's primary users are knowledge workers who deal with a lot of source material and need to extract structure from it quickly:
Secondary audience: PKM enthusiasts (Obsidian, Heptabase, Logseq users) looking for a visual synthesis tool that complements their long-term knowledge management vault.
SpawnGraph's answer:
I built SpawnGraph because every "AI mind map" tool I tried in 2024โ2025 had three problems: they required signup, they uploaded my PDFs to their servers, and they charged per generation (sometimes hidden as "credits"). I wanted to map research papers, technical docs, and YouTube talks without any of those constraints.
The technical insight was that modern browsers can do most of the heavy lifting client-side: pdf.js for PDF text extraction, Intl.Segmenter for tokenization (built into V8), heading-hierarchy reconstruction in plain JavaScript, Whisper.cpp WASM for audio transcription, and Tesseract.js for image OCR. The "AI" part of AI mind maps was largely unnecessary โ most real-world documents already have implicit structure (headings, paragraphs, lists) that can be extracted deterministically.
Real-time collaboration was added next because mind mapping is genuinely better as a multi-player activity. We used Yjs CRDTs over a custom binary WebSocket protocol โ the same underlying tech as Linear, Figma's multiplayer layer, and AFFiNE.
The product is solo-built and bootstrapped. We're currently pivoting toward a local-first desktop model (Tauri 2.x) for power users who want the same workflow without any browser dependency, modeled on Obsidian's approach.
SpawnGraph's answer:
Frontend (browser): - React 19 + Vite + TypeScript - @xyflow/react for the canvas - Yjs + y-indexeddb + y-protocols for real-time CRDT collaboration - Zustand for client state - Tailwind CSS for styling - pdf.js for PDF text extraction - Intl.Segmenter for tokenization - Whisper.cpp WASM for audio transcription - Tesseract.js for image OCR - @xenova/transformers for browser-side ML utilities - pdf-lib + pptxgenjs + jszip for client-side export to PDF/PPTX/zip - React Router v6 + SSR prerender for marketing pages
Backend: - Hono framework on Node.js (single VPS) - Postgres for primary storage - Lucia Auth for session management - Yjs sync server (WebSocket binary protocol) - Dodo Payments for billing (not Stripe) - Cloudflare Pages for static hosting + edge caching - Cloudflare DNS + Cloudflare Insights for analytics
Infra cost is ~$30/month at current traffic โ single VPS + Cloudflare free tier + small Postgres instance.
SpawnGraph's answer:
Perhaps you know someone who swears by Obsidian, it may seem like a cult of overly devoted people for how passionate they are, but it's not without reason
I've been using Obsidian for over 3 years, at a point in my life when I felt I had to handle too much information and I felt like grasping water not being able to remember everything I wanted, language learning, programming, accounting, university, daily tasks. A friend recommended it to me next to Notion (of which he is a passionate cultist priest) and I reluctantly picked it and fell in love almost immediately.
Obsidian seems very simple, like a notepad with folder interface, similar to Sublime Text, but the ability to link files together in a Wiki style allows you to organize ideas in any way you want, one file may lead to a dozen or more ideas that are related
If you want to do something specific, Obsidian has a plethora of community created plugins that expand the functionality, in my case, I use obsidian to organize my classes both as a teacher and as a student, using local databases, calendars, dictionaries, slides, vector graphic drawings, excel-like tables, Anki connection, podcasts, and more
I've been using Obsidian for more than a year. It's been great. I think it offer a great balance of control, flexibility and extensibility. What is more, you own your own data, that's been a must-have feature for me. I just can't imagine putting all my knowledge into something that I don't have control over.
I think two of the most popular alternatives that people consider are Logseq and Roam Research. Although Logseq is a bit different, it's considered compatible with Obsidian. Supposedly, you can use them with a shared database (files. Both use simple text files for storage). I tried that once, a few months ago. It worked, yet it messed up a bit my Obsidian files ยฏ_(ใ)_/ยฏ.
Based on our record, Obsidian.md seems to be more popular. It has been mentiond 1520 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Install Obsidian: Download the client from obsidian.md and create a local Vault โ just a local folder. - Source: dev.to / about 1 month ago
Obsidian (https://obsidian.md/) Honestly its not huge and most are probably obvious, but those are what I immediately install on my machines. - Source: Hacker News / about 1 month ago
A place to store the feedback - I keep mine in an Obsidian vault, organised by type (interviewing, facilitation) and date. This makes trend tracking trivial. - Source: dev.to / about 2 months ago
Option 2: Dedicated markdown app.Typora, Obsidian, or similar. Better editing experience, but now you're context-switching between your code editor and your docs editor. Copy-pasting paths, losing mental context, duplicating effort. - Source: dev.to / about 2 months ago
Obsidian is the storage. A desktop app that opens any folder of markdown files and adds links, search, and a graph view on top. Your files stay on your disk. No cloud unless you turn it on, no proprietary database, no export step. If you want your notes back, you already have them. - Source: dev.to / about 2 months ago
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Miro - Join Millions of users that collaborate from all over the planet using Miro. Experience the power of the #1 visual workspace for innovation. More than 100M users and 250,000 companies are collaborating on the canvas.
Logseq - Logseq is a local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base.
Mapify - Turn text, audio, visuals, and any sorts of content into structured mind maps instantly using AI.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Xmind - Xmind is a brainstorming and mind mapping application.