Along with MarketMuse, Blogely is my top 1 AppSumo purchase. (I nearly gave myself a heart attack when I saw MarketMuse had joined us poor mortals here, so yes, the fact an app exist that shares that top spot with it is a big deal).

Blogely is the most complete blog- and non-fiction writing environment you'll find (and not just because it's got no competition at the moment).

- You get to pre-build your workflow in as granular a manner as your so-not-a-pantser personality demands.
- Blogely does research properly (as opposed to merely in view of search engine optimization), which means you get the top 100 search results to work with. You even get Google Scholar as a bonus, and you can reuse and reassign the Research Docs you build.
- It teaches you to think of your content as a collection of reusable blocks. (This is a VERY valuable mindset.)
- The extension lets you collect snippets from all over the web to aid your writing process.
- You can take notes and attach them to your drafts and articles.
- There's auto-save and versioning to save your behind if (no, when) you mess up.
- There's an affiliate marketing drawer where you can keep all your affiliate codes & products on standby, ready to be used and linked whenever you need to insert them in your content (AND you get to choose what you insert & link: just text, just image or both).
- If you're a freelancer, you can build portfolios to showcase to potential employers, and you'll be able to offer your articles on the Blogely market in the future.
- Blogely is integrated with WordTune AND you get 20% off if you subscribe.
- The major blogging platforms and CMS are being integrated for direct publishing, but you also have the Export as HTML File option available in case yours isn't on the list yet.
- The SEO features are very good and keep getting better (there's now a heatmap functionality guiding you to any gaps in your competitors' content).
- The roadmap is full of exciting new features.

Last but actually first, the founder really, really cares about his product, so he's always there to listen to any ideas you might have, and the support in case of issues is exceptional.

I've been in love with Blogely since I first tested it 5 months ago. I figured it was high time I explained why in case there are still people straddling the fence. The deal is days away from completion, so get at least 2 codes (3 if you can afford them) while you still can.