ESB Consultancy is a niche software publisher that specializes in compact, single-purpose utilities designed to streamline everyday technical and scientific tasks. Its catalog centers on two long-standing freeware titles: ESBCalc, a precision scientific calculator that handles algebraic, trigonometric, logarithmic and statistical operations with full memory and paper-tape history, and ESBUnitConv, a comprehensive unit-conversion engine covering thousands of measurement combinations across length, area, volume, mass, temperature, pressure, energy, power, velocity, acceleration, angle, density, time, flow, force, light, radiation, torque and computer storage. Engineers, students, laboratory technicians, hobbyists and field-service professionals routinely embed these lightweight tools in their workflows because they launch instantly, occupy minimal screen real-estate, and return exact values without network latency or advertising clutter. ESBCalc is frequently used for quick verification of equations, homework checks, or on-site dimensional analysis, while ESBUnitConv serves architects translating thermal units, chemists converting molar quantities, or travelers reconciling foreign specifications. Both applications retain clipboard integration, selectable precision levels, and optional always-on-top modes, making them unobtrusive companions to larger CAD, simulation or data-logging suites. The publisher’s software is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always installing the latest versions and supporting batch installation of multiple applications.