The Spectrum family enjoys a very large software library of more than 23,000 titles which is still increasing. While most of these are games, the library is very diverse, including programming language implementations, databases (e.g. VU-File), word processors (e.g. Tasword II), spreadsheets (e.g. VU-Calc), drawing and painting tools (e.g. OCP Art Studio), and even 3D-modelling (e.g. VU-3D) and archaeology software amongst many other types.
The hardware limitations of the Spectrum imposed a special level of creativity on video game designers, and so many Spectrum games are very creative and playable even by today’s standards. The early Spectrum models’ great success as a games platform came in spite of its lack of built-in joystick ports, primitive sound generation, and colour support that was optimised for text display.
 ^ Brown, Paul N.. “Pitcalc — simple interactive coordinate & trigonometric calculation software”. Retrieved 2008-09-16.
 ^ Adamson, Ian; Richard Kennedy (1986-10-30). Sinclair and the “Sunrise” Technology: The Deconstruction of a Myth. Penguin Books Ltd. ISBN 0-14-008774-5.