ES40 emulator development has virtually been halted since 2009. The lead developer of ES40, Camiel Vanderhoevenis developing both Freeware and Commercial Alpha and VAX emulators for Migration Specialties.
FreeAXP is the Freeware Alpha emulator from Migration Specialties.
Avanti is the Freeware Alpha emulator from Migration Specialties.
Working Towards: Version 0.19 release
The most noticeable change in version 0.19 will be increased use of threading. In version 0.19, almost every device will run it's own execution thread, which will allow the emulator to make better use of multiple processor cores (if available), and will open up the way to emulating an ES40 with multiple CPU's.