FreeSWITCH is open-source software. So, you will always be able to obtain its source code for free. Also, it is a special kind of open source: you can modify it (or ask some hired consultant to modify it on your specs), build your product on top of it, and sell it, with no need to distribute your modifications or to pay any royalties (it is covered by the BSD like license). In fact, with or without your modifications, building and installing FreeSWITCH from source code is simple. We'll look into it in this chapter.
FreeSWITCH can be compiled and installed on Linux, Windows, *BSD, and OSX, on a range of hardware that spans 96 cores big datacenter servers to Raspberry Pi, from VMWare to KVM virtual machines, and from LXC containers to AWS instances.
For each and every platform, FreeSWITCH depends on a lot of pre-requisites, many libraries, tools, and...