Also referred to as an IP PBX or a virtual PBX, a hosted PBX refers to a communication service where the call platform (as well as the PBX features and capabilities) are operated and maintained by a third-party service provider off-site. Businesses no longer have to purchase, maintain, or upgrade hardware because the service provider shoulders this responsibility. This allows organizations to focus more on their core competencies, and save moneySponsored Listing
Specter - Abstract Arithmetics Library (AAL) is a library coded in native C which is able to do operations with numbers of virtually unlimited length. Specter is targeting mainly cryptography and big integer maths though.