re7zip, the eco-friendly unzipper

Following our series of tools based in Java, you find now available re7zip at

When thinking about what this tool does, you wouldn't imagine it as ecologically friendly but this is a wonderful factor when you consider the time and resources that such a small tool saves you from using.

Imagine the case where you want to grab a small file from a DVD or CD archive that is stored in ISO format somewhere around the Internet. Typically you would need to download the whole image, let's say some 700Mb to 2.5Gb and then extract the file you need from the archive.

You need to wait some time and you need to use quite some disk space. On the middle of this operation you just fudged the network with a transmission of billion bytes that you won't be using at all.

Well, while reflecting about a solution to this matter we came about with re7zip.

You might already be familiar with 7zip, the popular open source alternative to Winzip. Being open source, we picked the source code and added the missing link: support for opening HTTP streams from the Internet.

Might seem strange why we pick on ISO files, but consider them just as an example. In reality you are now capable of extracting files from just about any kind of archive that 7zip already supports, such as 7z, XZ, BZIP2, GZIP, TAR, ZIP, WIM, ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z.

Now it seems a bit more powerful doesn't it? :)

Not yet happy with just a good idea, we went further and coded the tool in Java. In practice means that you can now run the tool under Windows, MacOS and Linux without need to compile a single thing.

After all this work was done, we just published the code again as open source for everyone in the world to use it in their own projects if they wish to do so. You find the code at

This is certainly not a tool to cater those who would prefer a nice user interface, but it is a nice tool for those with a geek and eco-friendly heart.

Have fun, share your work with world.