Egret is a free Tumblr theme specifically tailored for group blogs, but it’s also a jack of all trades with big images and thoughtful typography.

Extensively customizable and modular theme. Tons of options to modify to your style.

A personal blog Theme with a responsive layout and tons of powerful features, it’s a great premium theme for all kinds of blogs. Clean, minimal and fully customizable.

Silkyflatは、「あらゆる形式の作品を簡単に投稿できて、かつデザイン性の高いWebパブリッシングツール」というtumblrの基本コンセプトに則り、クリエイターの自己表現の場としてふさわしいデザインと機能性を備えたtumblrテーマです。

Clean and single column Tumblr theme designed for snappy posts.

Cutout theme is a free, minimal, highly customisable Tumblr theme. Built using Boostrap 3.x. It renders great on many devices, from desktop to mobile.

A responsive and readable theme using Google Web Fonts

A fresh and serene theme to invigorate your blog.

Make your tumblr look like a book!

Focused on beautiful, readable content

Krelium is beautiful, everything you want, and nothing else.

Penman by Style Hatch is cosmopolitan, well cultured theme can handle heavy text post and large imagery. It’s for someone that has something to say!

A Simple, ultra-clean, and free responsive tumblr theme.

SWEET

Spire is a new theme from bam themes, its responsive and has a whole host of options and features.

A subtle and and finely crafted theme supporting a vibrant color scheme and a lot of small visual details.

Responsive traditional blog style layout Tumblr theme perfect for a huge background.

Stop and smell the flowers :)

simple free minimalistic header image text audio links video good minimal

Antiquity is a grunge based Tumblr theme packed with incredible detail and CSS trickery that will make a huge impact on visitors to your site.

Big, bold and extremely beautiful, Rodeo will make your blog look better than ever.

A simple, cat-friendly, two column theme with easily editable colors and a nice box for your tweets.