ACE

File Format
Name	ACE
Ontology	Electronic File Formats Archiving ACE
Extension(s)	.ace
Wikidata ID	Q288256
Released	1997

For another "Ace" format, see Ace Film.

ACE is a compressed archive format. It was originally developed by Marcel Lemke, later by e-merge GmbH.

Related software includes Ace (for DOS, OS/2, and Windows console), UnAce, WinAce, XAce Plus, MacUnace, UnACE.DLL, ActiveACE, ACE Compression Library (ACL). At least one version of UnAce is open source.

Version 2 of the format introduced new compression schemes that are not supported by all ACE decompression software.

Identification

Files have ASCII "**ACE**" at offset 7.

Specifications

• ace12b.zip → TECHNOTE.DOC

Software

• ace12b.exe or ace12b.zip - Ace v1.2b (includes UnAce source code)
• Ace v2.6
• GPL unace
• Konvertor
• acefile (Python)

Sample files

• dexvert samples — archive/ace

Links

• Wikipedia: ACE (compressed file format)
• Wikipedia: WinAce
• WinAce website (2017 archive)