gperf

gperf is a GNU perfect hash table generator published by oss-winget that creates minimal perfect hash functions from a user-supplied list of keywords, enabling constant-time keyword recognition in compilers, interpreters, and other language-processing tools without storing the actual strings. Operating within the Developer Tools category, the current release 3.1 (the only version tracked) reads a set of keywords and emits C or C++ code for a hash table whose size equals the number of keywords, eliminating collisions and reducing memory footprint compared with conventional hashing schemes. Typical use cases include generating reserved-word recognizers for lexers, building fast command dispatch tables in CLI applications, and embedding static keyword-to-index mappings in embedded systems where both speed and space are constrained. By producing a compact, read-only data structure that requires no runtime initialization, gperf helps developers shorten load times and shrink binary size while retaining O(1) lookup performance. The generated code is portable ISO C/C++, so it integrates cleanly into cross-platform projects and can be compiled with any standards-compliant toolchain. Researchers and language implementers also leverage gperf to benchmark hashing algorithms or to prototype new domain-specific languages that demand efficient keyword lookup. Because the utility is command-line driven, it slots easily into automated build pipelines and Makefiles, allowing teams to regenerate perfect hash tables whenever the keyword set changes. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.

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