Developer builds are not official releases and may be unstable. But they can be useful to download for those who need early access to builds, but who do not want to compile their own build. They are announced and discussed only on the development list, as they are not production builds. Apache OpenOffice currently has two types of development builds: those generated by buildbots, and those manually generated/built.
Apache OpenOffice makes use of buildbots for some of our environments. You can review the Apache OpenOffice buildbot information here. Additional information on buildbot builds for linux64, window7, and linux32 can be found here.
Development snapshots, which are manually generated, are used as the final step leading up to a release. These are used for final testing before an approved release. You will also find helpful hints for specific platform building here.
You can also have a look at Sales Video Pricing. Developers FAQs