dnGrep is a search tool for Windows that searches across text files, Word and Excel documents, PDFs, and archives using text, regular expression, XPath, and phonetic queries. It includes search-and-replace in text files, whole-file preview, right-click search in File Explorer, and result file management. It runs on Windows 10, 11, or Windows Server and may be incompatible with Windows Smart App Control.
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OA.mg is a search engine for academic papers that specialises in open access content. It indexes over 240 million open access research papers, enabling users to search for and access full-text PDFs of papers across research fields, by specific author or publication. The platform also provides a Chrome extension to facilitate paper downloads.
Document search engine for finding text files, PDFs, documents, and public downloadable content.
Ugrep is a file pattern searcher designed as a user-friendly, faster alternative to grep. It includes a terminal user interface, Google-like Boolean search, fuzzy search, hexdumps, and can search nested archives, compressed files, PDFs, documents and other file types, hosted on GitHub.
CaieFinder is a search tool for finding answers in Cambridge CAIE past papers. It works with IGCSE, GCE O Level and A Level past papers and returns answers along with the original question and answer PDFs. Users search by entering consecutive words from a question; the site advises plain words over mathematical expressions and says words need not start the question.
Diigo is a research tool and knowledge-sharing community for collecting and tagging online resources, annotating web pages and PDFs, and organizing links and references. It offers highlights, sticky notes, an outliner, groups for sharing research, and archived web pages.
A local SEO tool that scans geo-grids to show Google Maps rankings across multiple locations and offers AI-assisted optimization of Google Business Profiles. It includes rank tracking, competitor tracking, support for service area businesses, and AI search visibility checks. Agency features include white-label PDF reports, organized workspaces, and secure team management.
LocalGPT is an on-premise document intelligence platform that lets users chat with their documents on their local device using GPT models. It supports PDF, DOCX, HTML, Markdown, and TXT files and combines dense vector search with LanceDB full-text search and a cross-encoder reranker. It runs with a plain Python RAG core and offers generation models via Ollama.
UNdata is an internet-based United Nations data service that aggregates UN statistical databases into a single entry point at http://data.un.org/. It allows users to search and download a range of statistical resources from the UN system. The service hosts 32 databases containing 60 million records, covering topics including population, national accounts, education, and labour market statistics, with datasets available for download in PDF and CSV formats.
A cloud GPU password recovery and credential auditing service for data the user owns or is authorized to test. It supports Office, ZIP, PDF, Wi-Fi captures, NTLM and AD hashes, with a free Basic Search and optional paid custom GPU jobs and unlocks. An authenticated REST API and MCP tools are documented. Uploaded files are deleted after hash extraction.
A browser-based viewer for opening ebook and archive files. It supports PDF, EPUB, FB2, MOBI, AZW3, DJVU, CBZ, CBR, RAR and ZIP files, and files can be dropped onto the page or opened by clicking. If a file fails to open, the page suggests trying another application or reporting the problem on the file's page on Anna's Archive.
AnyTXT Searcher is a desktop full-text search application that extracts text from documents and indexes it for searching. It supports formats including plain text, Word, Excel, PDF, and images via offline OCR, and runs on Windows, MacOS, and Linux.
ARKAT USA, Inc. publishes ARKIVOC, described as a free journal of organic chemistry. The site lists recent and accepted manuscripts with DOIs and PDF full texts, and offers browse, search and conference sections.
Project Gutenberg Australia offers free ebooks by authors who died before 1955, whose works are in the public domain in Australia. The site provides over 5,000 titles in formats such as text, HTML, EPUB, MOBI, and PDF. Volunteers prepare the ebooks. As of January 2025, the collection is no longer being expanded, but the site remains online.
Auto-Brochures hosts PDF car and truck sales brochures, catalogs and electronic media. It covers many vehicle makes, with brochures made for the US or international markets and newer PDFs alongside scanned older printed brochures.
BookOrbit is a self-hosted library and reading platform for ebooks, audiobooks, comics and PDFs, deployed with Docker and a PostgreSQL backend. It provides built-in format readers, multi-user libraries with role-based permissions, metadata automation, and sync with Kobo and KOReader.
BreyerHorseRef is a collector reference site for Breyer model horses and animals, not affiliated with Breyer or Reeves International. Its database lists over 9,600 models with details such as size, mold, color and model number. Members can build in-search-of, private collection and horse showing lists, export PDF and CSV files, and list models for sale. Membership costs $35 a year.
An online publishing platform for digital magazines, interactive publications and online catalogs. It converts PDFs into interactive publications with features such as audio, video, links, tables of contents and search, and offers personalization, conversion and audience statistics.
CDisplayEx is a comic book reader for Android and Windows. It reads comic book formats including CBR, CBZ and PDF, as well as Manga, and is described as loading comic books immediately.
CDAWeb is a service of NASA's Space Physics Data Facility that holds selected public non-solar heliophysics data from current and past missions and projects. It supports creating data subsets by date and variables, uniformly time binned data, plots in PDF, PS and PNG formats, and movies of image sequences. All SPDF services are unavailable during monthly system maintenance.
CiteMe is a citation generator that formats references in APA, MLA, Harvard, Chicago, and many other styles. Users paste a DOI, ISBN, URL, or title, and the tool reviews the metadata source before formatting. It searches scholarly databases such as OpenAlex, CrossRef, and PubMed. A free plan is offered, with a Pro tier adding batch PDF import and exports.
Clipboard CopyPaster is a free Android clipboard manager by EVVAsoft. It saves copied texts, links and images, and allows copying saved data back to the clipboard. Features include editing, sharing, notes, search, QR codes, themes, a password, biometrics, backups, PDF conversion and a floating window. On Android 10 and higher, the app must be opened to save clipboard contents.
CLP Calculus Textbooks offers free PDF and web-based calculus textbooks and problem books by Joel Feldman, Andrew Rechnitzer and Elyse Yeager. The set covers differential, integral, multivariable and vector calculus, and source files are listed.
The Cologne Digital Sanskrit Dictionaries are Sanskrit lexicons prepared since 1994 by the Institute of Indology and Tamil Studies, Cologne University. The 44 dictionaries are organised primarily by secondary language and then by publication date, from 1832 to 1993. Each offers several display types plus PDF scan and XML files for download, along with an offline web app and iOS, macOS and Android apps.