In the context of rendering (computer graphics), software rendering refers to a rendering process that is unaided by any specialized hardware, such as a graphics card. The rendering takes place entirely in the CPU.

Memory leaks may not be serious or even detectable by normal means. In modern operating systems, normal memory used by an application is released when the application terminates. This means that a memory leak in a program that only runs for a short time may not be noticed and is rarely serious.

Memory management is the act of managing computer memory. In its simpler forms, this involves providing ways to allocate portions of memory to programs at their request, and freeing it for reuse when no longer needed. The management of main memory is critical to the computer system.
Garbage collection is the automated allocation, and deallocation of computer memory resources for a program. This is generally implemented at the programming language level and is in opposition to manual memory management, the explicit allocation and deallocation of computer memory resources.

Exception handling is a programming language construct designed to handle the occurrence of special conditions that change the normal flow of program execution. This is an open source Exception Handling Mechanism i wrote for C and C++.