
Scrimba
Data Protocol
GoIT LMS
Codelita
CodeCrafters
Codecademy
Divize
The most fun way to learn to code.

Atticus
KDP Builder
Vellum
Reedsy Book Editor
Scrivener
Adobe InDesign
Sudowrite
Web-based book formatting for indie authors. Import Markdown, Word or PDF, choose from 15 typographic templates, export polished epub, print-ready PDF (KDP, IngramSpark) and DOCX. Built-in AI tools, no Mac required.

Which is more popular?
Based on our record, Codédex seems to be more popular. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codedex.io | foliostudio.app |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from France · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Codédex yet.
Folio Studio is a web-based book formatting tool for independent authors. Import your manuscript (Markdown, Word DOCX, ODT or PDF), choose from 15 typographic templates designed for different genres (novel, thriller, romance, essay, academic, illustrated), then export polished epubs, print-ready...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Codédex yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Codédex and Folio Studio.
Folio Studio's answer:
Folio Studio's answer:
Folio Studio is one of the few book formatting tools designed natively for Markdown writers. Unlike Vellum (Mac-only, $249) or Atticus ($147), it runs entirely in the browser on Windows, Mac and Linux, supports French and English from day one, and combines typographic templates, real-time preview, and built-in AI tools (chapter analysis, rephrasing, cover generation) in a single workflow. Free to start, no credit card required.
Folio Studio's answer:
Three reasons. (1) Cross-platform: it works on any computer with a browser, while Vellum is locked to Mac. (2) Markdown-first import: ideal for authors writing in Obsidian, iA Writer, Typora or VS Code, which Vellum and Atticus don't support natively. (3) Pricing: free plan to publish your first epub without watermark, then €4.99/month Starter or €9/month Pro, vs $147–$399 one-time for desktop alternatives.
Folio Studio's answer:
Independent authors publishing on Amazon KDP, IngramSpark, Apple Books or Kobo who want a clean export pipeline without learning Pandoc or LaTeX. Also students and academics writing memoirs, dissertations or research reports who need print-ready PDFs with proper typography. Mostly Windows and Linux users frustrated by Vellum's Mac-only restriction, plus French-speaking authors underserved by English-only tools.
Folio Studio's answer:
Folio Studio started as a frustration with existing book formatting tools. Vellum is excellent but Mac-only and expensive. Atticus is cross-platform but lacks Markdown import and AI features. Pandoc and Calibre produce technically valid epubs but ignore typography. Folio Studio combines the typographic quality of Vellum, the cross-platform accessibility of Atticus, and the Markdown-first workflow that modern authors expect, into a single web app.
Folio Studio's answer:
Next.js 16 (App Router) for the web application, TypeScript end-to-end, Tailwind CSS v4 for styling, Supabase for authentication, database (PostgreSQL) and file storage, Stripe for billing, Puppeteer for PDF rendering, Replicate (FLUX) for AI cover generation, and the Anthropic Claude API for AI chapter analysis. Deployed on Vercel with Fluid Compute.
Share your experience with using Codédex and Folio Studio. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I'm a new coder too. What helps me is finding a good place to learn the most basic principles and having 2-5 things I want to do. I started with codedex.io , learning Python and HTML and then took their courses and moved on looking for... Source: over 3 years ago
I think you should focus on HTML, CSS, and JS, starting with HTML. I just started HTML on a website called codedex.io. Pretty cool so far but I feel like I'm getting into a brand new thing haha. Source: over 3 years ago
I've been learning Python on a website called codedex.io for about 6 months. It's been great for me so far. I just started on Classes and Objects. Give them a try, you might like them. Source: over 3 years ago
Tracking Folio Studio since May 2026.
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