An email client that allows you to create OmniFocus actions that reference emails, manually or automatically using rules.
OmniFocus Integration
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 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.
Quickly and conveniently and capture text and then send it to OmniFocus and other destinations through the use of flexible, customizable actions.
An alternative to Apple's Calendar app for Mac, iPhone, and iPad that provides enhanced functionality, a natural language interface, and OmniFocus integration.
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.
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.
Launch Center Pro can be configured to provide quick and convenient ways to create and access OmniFocus tasks on iPhone and iPad.
An email client that combines Gmail's web interface with a slew of additional features, including integration with OmniFocus.
An email client for Mac and Windows that's speedy, customizable, and extensible. The Mac version includes native support for OmniFocus.
Use Evernote to take notes and to capture action items. Then add a tag to the note and TaskClone will automatically create an OmniFocus action for each of your action items.