Mimestream

This polished and feature-rich Mac email client is optimized for use with Gmail and has built-in OmniFocus integration.

Paletro

Paletro helps you tap into OmniFocus' extensive feature set by putting OmniFocus commands, perspectives and plug-ins at your fingertips.

PopClip

Select text in any Mac app and PopClip pops up with instant text actions. Install the OmniFocus extension and you'll be able to send selected text to OmniFocus.

Focus by Meaningful Things

Focus is a flexible productivity timer with built-in support for OmniFocus. Define your work in OmniFocus and use Focus to help you bring it to fruition.

Obsidian

Obsidian is a highly-adaptable note-taking app. Notes are stored in Markdown text files in the location of your choice and it's free for personal use.

Daylite

Daylite by Marketcircle is a feature-rich CRM and business management app designed for individuals and organizations who have standardized on Apple technologies.

Craft

Craft is a meticulously-designed note-taking app for iPhone, iPad, Mac, Windows and Web. It's well integrated with OmniFocus and is a great place for reference information and project support notes, whether you're using it individually or as part of a team.

Hookmark

Hookmark for macOS makes it possible to link your OmniFocus projects and actions to almost anything, including files, folders, notes, websites, and emails. Having what you need within easy reach accelerates the process of getting things done.

DEVONthink

DEVONthink is a powerful data storage and research app for Mac, iPhone, and iPad that's a natural complement to OmniFocus. Through the use of links, you can have a vast amount of data at your fingertips as you work on tasks in OmniFocus.

Bear

Bear is a beautifully-crafted note-taking and writing app for iPhone, iPad and Mac. It can be a handy place to keep notes about your OmniFocus actions, projects and reference information.

Notion

A highly-flexible, cloud-based app that individuals and teams can use to write, plan, collaborate, and get organized.

Spark Mail

A polished email client with a focus on email prioritization. Spark Mail also has innovative support for teams and integration with OmniFocus.

Airmail

An email client that allows you to create OmniFocus actions that reference emails, manually or automatically using rules.

TextExpander

Create OmniFocus actions, action groups, and projects more quickly and accurately by defining TextExpander snippets for frequently typed words and phrases.

Postbox

An email client for Mac and Windows that's speedy, customizable, and extensible. The Mac version includes native support for OmniFocus.

MindNode

Allows you to create visual outlines of your ideas and responsibilities. Useful when designing your system and for planning projects.