Simplyzip 

Simplyzip is a multi archiver.Can open:ZIP,CZIP,ACE,CAB,RAR,TAR,GZIP,LZH,BZ2,SQX, RS, UUE,XXE,BASE64,UCL,ARJ,ZLIB,RPM,DEB,7-ZIP Create: 7z, ZIP,CZIP,Cab,LHA,TAR,TAR GZ TAR BZ2,ACE (optionale DLL), Deepfreezer SQX,UCL,RS,ZIP-SFX/LHA-SFX and RAR-SFX
zip czip ace cab rar tar gzip lzh bz2 sqx rs uue xxe base64

ArcConvert 

This convertor can convert the following archives:7-ZIP/ LZH/ CAB/ ZIP/ ARJ/ ACE/ RAR/ TAR/ TGZ/ GZ/ Z/ BZ2/ YZ1/ YZ2/ GCA/ BEL/ RPM/ DEB/ BH/ Noa32/ HKI/ PAQAR/ SQX/ HA/ ZOO/ UHARC/ LFB/ ZLIB/ UCL/ IMP/ RS/ SPL/ APK/ Arc/ DZ/ MSI to many archive
convert 7-zip lzh cab zip arj ace rar tar tgz gz z bz2 yz1