Open Source ChromeOS Search Software

CLucene is a C++ port of Lucene: the high-performance, full-featured text search engine written in Java. CLucene is faster than lucene as it is written in C++.

Power searching on your desktop without the pain. Perform powerful desktop searches without having to index your system using regular expressions. Graphical equivalent to find/grep. Available for Windows (JAVA) and Linux (Gnome & KDE) and easy to translate into your locale.

Search and replace operations on file content accross multiple files. Recursive operations within entire directory trees. FAR comes with support for regular expressions (regex) over multiple lines, automatic backup and various character encodings. Run grep like extractions to condense or rearrange sources, or perform bulk file renaming.

phpMorphy is morphological analyzer library written in pure PHP. Currently supports Russian, English and German languages.

Paul Graham GPT is a specialized AI-powered search and chat app built on a corpus of essays from Paul Graham, giving users the ability to query and discuss his writings in a conversational way. The repo stores the full text of his essays (chunked), uses embeddings (e.g. via OpenAI embeddings) to allow semantic search over that corpus, and hosts a chat interface that combines retrieval results with LLM-based answering — enabling RAG (retrieval-augmented generation) over a fixed dataset. The app uses a Postgres database (with pgvector) hosted on Supabase for its embedding store, making the backend relatively simple and accessible, and the frontend is again built with Next.js/TypeScript for a modern responsive UI. By pulling together search and chat, it creates a useful tool both for readers who want to revisit or explore Paul Graham’s ideas thematically, and for learners or researchers who want to query specific essays or concepts quickly.

DuMP3 is a duplicate and similar file finder. It finds exact duplicate binaries by hash, similar text files by substring content, images (JPG, BMP, GIF, PNG, etc) by color and audio files (MP3, WAV, OGG, etc) by wave data. Future: fonts, video.

OpenSearchServer is a powerful, enterprise-class, search engine program. Using the web user interface, the crawlers (web, file, database, etc.) and the client libraries (REST/API , Ruby, Rails, Node.js, PHP, Perl) you will be able to integrate quickly and easily advanced full-text search capabilities in your application: Full-text with basic semantic, join queries, boolean queries, facet and filter, document (PDF, Office, etc.) indexation, web scrapping,etc. OpenSearchServer runs on Windows and Linux/Unix/BSD.

Aperture is a Java framework for extracting and querying full-text content and metadata from various information systems (file systems, web sites, mail boxes, ...) and the file formats (documents, images, ...) occurring in these systems.

disk manager is a CD/DVD archiving tool. It storys the directory contents of any media so you can search it later. Its also designed as file explorer which makes it easy to find big files. Windows Version supports native file context menus.

This library implements several locality sensitive hashing(LSH) based algorithms, including indexing data structure for high dimensional spaces and metric spaces, sketch constructions and set embedding algorithms.

This is a autorun menu for cd's. It link a name with a file and a short description. It can execute/open files, copy directories, execute commands, etc and it is really easy to use. (Spanish)

RegExpresso is a "regular expressions" tester, designed to integrate well into modern web browsers. Though it has few features compared to commercial products, it should be usefull to any programmer who uses regular expressions.

Many times, developers (or even, normal users) run into an issue of searching for a resource that is inside a zip. Worse, that resource is inside a zip which is itself inside ANOTHER zip (i.e. nested archive). Possibly you need to verify whether a particular resource is present in an ear or you want to know part of a file name but don't know which zip/jar on your hard disk contains that class file. zfind solves this problem. zfind is very fast and it works on most common archive/compress files. Apart from GUI and command line, it also provides API support which let's you use it in your java code as a 3rd party library. Thanks for using, and if you find any bug, do post a ticket or discussion topic. I can't fix anything if I don't know the problem :) **Check Wiki for USAGE details

DupLichaSe is a very fast Duplicate File Detector that uses inductive heuristics to detect duplicate files very fast; based on content! DupLichaSe stands out from EVERY other Duplicate file detection Software because of it's graph based semi-automatic selection system. ... after finding 100s of duplicate files, do you have to go through some manual and possibly laborious process of deleting the duplicates? ...or is there a way for the Software to learn and do most of it for you in a SAFE and RECOVERABLE MANNER? YES!! There is!! ...This Software will ALSO help you and delete duplicate files, after you must have taken action on a a FEW important files(i.e large files that are duplicates). ++Thanks to its trivial Graph based suggestion System

Jake is a console based app written in python and qt4. Plugins will let you do almost anything, for example, search in google, translate, view images, talk with it (aka AI bot). Also, skining system will let you choose how should jake look.

Enable your academic documents on your hard-drive to be searched using an automated solution with limited user-intervention. All this is done in a non-intrusive manner, ensuring your files are not moved.

BeanQuery is a Java solution that allows for querying arbitrary collections of arbitrary object types by using a criteria like API in a declarative and typesafe manner.

A high-performance implementation of bloom filters, a lightweight duplicate detection algorithm.

Dessy is a DEsktop Search and SYnchronization framework for mobile devices. It allows file search using content, metadata, and custom tags, and synchronization of results, and entire file system subtrees. It works on MIDP 2.0 handsets and Java 2 SE.

Didaskon will deliver a framework for assembling a curriculum from existing learning objects provided by e-Learning services. The selection of learning objects will be based on the semantically annotated specification of the user's current skills.

The application should take a directory and parse it recursively or not, and execute a given executor. The executors shuold be pluggable and rendered on the application's ui according to some strict rules.

Java application using tree map algorithms to visualise disc space usage. Lets find forgotten large "space-eaters" files in an easy way.

Document summarization system. By adding document content to system, user queries will generate a summary document containing the available information to the system.

A simple document management system (DMS). Documents and associated datas are stored in a single file. Keep all your documents in your pocket on your USB stick.

Duplicate Checker searches your folders for identical files. It comes with an easy to use graphical user interface, and an effective command line mode.