ASPseek is an Internet search engine software developed by SWsoft and licensed as free software under GNU GPL.

ASPseek consists of an indexing robot, a search daemon, and a CGI search frontend. It can index as many as a few million URLs and search for words and phrases, use wildcards, and do a Boolean search. Search results can be limited to time period given, site or Web space (set of sites) and sorted by relevance (PageRank is used) or date.

ASPseek is optimized for multiple sites (threaded index, async DNS lookups, grouping results by site, Web spaces), but can be used for searching one site as well. ASPseek can work with multiple languages/encodings at once (including multibyte encodings such as Chinese) due to Unicode storage mode. Other features include stopwords and ispell support, a charset and language guesser, HTML templates for search results, excerpts, and query words highlighting.

ASPseek is written in C++ using the STL library, and uses mix of SQL database and binary files for storage.