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.

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.

MindNode

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

Launch Center Pro

Launch Center Pro can be configured to provide quick and convenient ways to create and access OmniFocus tasks on iPhone and iPad.

IFTTT

IFTTT (If This Then That) is a web-based service that can be used to automatically trigger the creation of OmniFocus actions based on a wide range of conditions.

Fantastical

An alternative to Apple's Calendar app that provides enhanced functionality, a natural language interface, and OmniFocus integration.

Drafts

Quickly and conveniently and capture text and then send it to OmniFocus and other destinations through the use of flexible, customizable actions.

Evernote

Evernote is a natural complement to OmniFocus. Use it to store ideas for upcoming projects and as a repository for project reference material.