Where to share Open Source?

There are plenty of great places to find and share source code for Open Source software out there. However, some of these projects become unmaintained or developers don't want bug fixes/modifications for certain platforms. Is there a place to share executables (along with source) of useful Open Source programs built for specific operating systems (such as Windows, Linux using the gcc and uclibc compiler chain, etc)? I don't want to fork a bunch of projects and maintain them. However, I have a lot of executables I've been modifying the source code for so I can build them on the operating systems I use. I'd like to be able to share them with other users who'd like to try these programs out (and may not be able to build the programs themselves). Maybe others have been able to port Open Source programs to new platforms or modify and add improvements as well, can't add the changes back into the original source and would like to share their changes too?