Older Versions of Power Manager
Power Manager first ran on System 7.6. This page provides history and information about those now unsupported versions.
Power Manager has a long history reaching back to 1997 and Apple’s System 7 operating system. We no longer support the oldest versions but continue to provide downloads for licensed users.
Power Manager 4
Released in 2010, Power Manager 4 escaped the confines of the Control Panel and was a full application.

A Power Manager 4 licence purchased today will work on the versions below. Licences for Power Manager Pro are no longer available.
| Version | Required | Hardware | Notes |
|---|---|---|---|
| Power Manager v4.6.5 | macOS 10.10 | Mac; Intel; 64-bit | Last version to support macOS 10.11. |
| Power Manager Pro v4.6.5 | macOS 10.10 | Mac; Intel; 64-bit | Retired, replaced by pmctl |
| Power Manager v4.6.0 | macOS 10.7 | Mac; Intel; 64-bit | Last version to support macOS 10.9. |
| Power Manager v4.1.8 | macOS 10.6 | Mac; Intel; 32 and 64-bit | Last version to support macOS 10.6. |
| Power Manager v4.1.2 | macOS 10.4 | Mac; Intel and PowerPC; 32 and 64-bit | Last version to support the PowerPC architecture. |
Power Manager 3
Released in 2005, and only surpassed by Power Manager 4 in late 2010, Power Manager 3 helped thousands of Mac users save energy.

Power Manager 3 is no longer available for sale.
If you are an existing user, your copy of Power Manager 3 will continue to work with Mac OS X 10.6. We supported Power Manager 3 with critical support until December 2010.
| Version | Required | Hardware | Notes |
|---|---|---|---|
| Power Manager v3.7.4 | Mac OS 10.4 – 10.6 | Intel and PowerPC | - |
Technical details for Power Manager
Power Manager 2
The first versions of Power Manager ran on System 7.6 and are no longer available for public download.

On the launch of Power Manager 3 existing users of Power Manager were given free upgrades to the then latest version.