iA Writer is not available as a web app but there are plenty of alternatives that runs in the browser with similar functionality. The best Online alternative is Roam Research. It's not free, so if you're looking for a free alternative, you could try Nuclino or Rentry.co. If that doesn't suit you, our users have ranked more than 50 alternatives to iA Writer and many of them are available as a web app so hopefully you can find a suitable replacement. Other interesting Online alternatives to iA Writer are Dillinger (Free, Open Source), WriteNext (Free), Calmly Writer (Paid) and OmPad (Free).
As easy to use as a word document or bulleted list, and as powerful for finding, collecting, and connecting related ideas as a graph database. Collaborate with others in real time, or store all your data locally.
Nuclino is the easiest way to organize and share knowledge in teams. Create real-time collaborative documents and connect them instantly like a wiki. Use the tree, board, and graph view to explore and organize your knowledge visually.
The writing application that boosts your writing. Increase focus and writing performance and reduce distractions by separating your creative writing from other activities. Let writing be the only activity you perform in the writing application.
OmPad is a free, simple, powerful, beautiful and minimal writing app that helps you focus and concentrate on writing great content. Format your text with headings, bold, italic, links, images, lists, code and quotes.