OmniPlan is a planning and project management software product from The Omni Group, headquartered in Seattle, Washington.

[3] In a June 2007 evaluation of OmniPlan 1.0, Macworld, a web site and monthly computer magazine dedicated to Apple Macintosh products, found the customizability of OmniPlan 1.0 to be "superior", but said the software was unlikely to meet the needs of project managers with multiple, complex projects.

[4] Version 4 of OmniPlan was released on July 15 2020 and added interval tracking, recurring tasks, auto-hiding of completed tasks, changes to scheduling abilities, a project wizard to set up new projects in the app, updated outline and resource views, a flat-file save format (in addition to the current package-based format), and an optional dark-themed UI mode.

Reports about work completed, total cost, and other metrics can be exported as well.

With the release of Version 2.1 on March 12, 2015, OmniPlan became a universal app which runs on iPhone, iPad, and iPod touch devices.