QEMU is a fast processor emulator: currently the package supports Alpha, ARM, CRIS, i386, LoongArch, M68k (ColdFire), MicroBlaze, MIPS, PowerPC, RISC-V, S390x, SH4, SPARC, x86-64, Xtensa and other emulations. By using dynamic translation it achieves reasonable speed while being easy to port on new host CPUs.

This library enables userspace to use Linux kernel asynchronous I/O system calls, important for the performance of databases and other advanced applications.

SpamAssassin is a very powerful and fully configurable spam filter with numerous features including automatic white-listing, RBL testing, Bayesian analysis, header and body text analysis. It is designed to be called from a user's .procmail or .forward file, but can also be integrated into a Mail Transport Agent (MTA).

Protocol buffers are a flexible, efficient, automated mechanism for serializing structured data - similar to XML, but smaller, faster, and simpler. You define how you want your data to be structured once, then you can use special generated source code to easily write and read your structured data to and from a variety of data streams and using a variety of languages. You can even update your data structure without breaking deployed programs that are compiled against the "old" format.

This is a collection of utilities to control Dell laptops fans. It includes programs to turn the fans on and off, to read fans status, CPU temperature, BIOS version.