Open Semantic Search is a personal search engine that features full-text search, faceted search (interactive filters), tagging, annotation, and vizualisations (trend charts and, tag cloud, and word cloud) for documents, files, images, videos, tables, sheets, and news from different data sources such as file servers, RSS, databases, wiki, or CMS. It integrate Apache Solr with UI, connectors, semantic wiki for metadata management (tagging, annotation, and structured notes), OCR, and other tools.
Solr-Connector-Files crawls and indexes directories and files from your filesystem (whatever is mountable to Linux) into Apache Solr. It features extraction of file contents with Tika, which extracts metadata and text form many document and file formats. It also integrates automatic text recognition (OCR) for images, photos, and PDFs using Tesseract OCR.
The Mandos system allows computers to have encrypted root file systems and at the same time be capable of remote or unattended reboots. The computers run a small client program in the initial RAM disk environment which will communicate with a server over a network. All network communication is encrypted using TLS. The clients are identified by the server using an OpenPGP key that is unique to each client. The server sends the clients an encrypted password. The encrypted password is decrypted by the clients using the same OpenPGP key, and the password is then used to unlock the root file system.