paperwork - Personal document manager (Linux/Windows)

•    Python

Paperwork is a personal document manager. It manages scanned documents and PDFs.It's designed to be easy and fast to use. The idea behind Paperwork is "scan & forget": You can just scan a new document and forget about it until the day you need it again.

soar - SQL Optimizer And Rewriter

•    Go

Apache License 2.0.

FASTER - Fast persistent recoverable log and key-value store + cache, in C# and C++

•    CSharp

Managing large application state easily, resiliently, and with high performance is one of the hardest problems in the cloud today. The FASTER project offers two artifacts to help tackle this problem. FASTER Log is a high-performance concurrent persistent recoverable log, iterator, and random reader library in C#. FASTER KV is a concurrent key-value store + cache (available in C# and C++) that is designed for point lookups and heavy updates.

column - High-performance, columnar, in-memory store with bitmap indexing in Go

•    Go

This package contains a high-performance, columnar, in-memory storage engine that supports fast querying, update and iteration with zero-allocations and bitmap indexing. The general idea is to leverage cache-friendly ways of organizing data in structures of arrays (SoA) otherwise known "columnar" storage in database design. This, in turn allows us to iterate and filter over columns very efficiently. On top of that, this package also adds bitmap indexing to the columnar storage, allowing to build filter queries using binary and, and not, or and xor (see kelindar/bitmap with SIMD support).

AlphabetIndex-Fast-Scroll-RecyclerView - A Powerful AlphabetIndex FastScroller Library for Android's RecyclerView!

•    Java

Step 2: implement SectionIndexer to RecyclerViewAdapter. This library works with any layout manager but is optimized for the use with a LinearLayoutManager.

js-search - JS Search is an efficient, client-side search library for JavaScript and JSON objects

•    Javascript

JS Search is an efficient, client-side search library for JavaScript and JSON objects

FileMasta - Search servers for video, music, books, software, games, subtitles and much more

•    CSharp

FileMasta is a search engine allowing you to find a file among millions of files located on FTP-servers. The search engine database contains the regularly updated information on the contents of thousands FTP-servers worldwide. We don't search the contents of the files. We host no content, we provide only access to already available files in the same way Google and other search engines do.

seqan - SeqAn's official repository.

•    C++

SeqAn is an open source C++ library of efficient algorithms and data structures for the analysis of sequences with the focus on biological data. Our library applies a unique generic design that guarantees high performance, generality, extensibility, and integration with other libraries. SeqAn is easy to use and simplifies the development of new software tools with a minimal loss of performance. The SeqAn library itself, the tests and demos are licensed under the very permissing 3-clause BSD License. The licenses for the applications themselves can be found in the LICENSE files.

Index Analysis

Index Analysis allows DBAs and developers to analyze the indexes in a database to determine the use, characteristics, and statistics of the index. The project contains the query written in T-SQL and report that can be opened as a custom report in SSMS.

SharePoint OCR image files indexing

IFilter plugin for the Microsoft Indexing Service (and Sharepoint in particular) to index and search image files (including TIFF, PDF, JPEG, BMP...) using OCR technology.

hypopg - Hypothetical Indexes for PostgreSQL

•    C

HypoPG is a PostgreSQL extension adding support for hypothetical indexes. An hypothetical, or virtual, index is an index that doesn't really exists, and thus doesn't cost CPU, disk or any resource to create. They're useful to know if specific indexes can increase performance for problematic queries, since you can know if PostgreSQL will use these indexes or not without having to spend resources to create them. For more information on this extension usage, you can see this blog post.

spotweb - Decentralized community

•    PHP

Spotweb is a decentralized usenet community based on the Spotnet protocol. Spotweb requires an operational webserver with PHP5 installed, it uses either an MySQL or an PostgreSQL database to store it's contents in.

ethql - A GraphQL interface to Ethereum :fire:

•    TypeScript

Example queries. EthQL is a server that exposes a GraphQL endpoint to the public Ethereum ledger. It works against the standard JSON-RPC APIs offered by all Ethereum clients. It is built in TypeScript, and thus leverages the vast ecosystem of GraphQL tooling while preserving compile-time type safety.

search-index-adder - The indexing module for search-index

•    Javascript

The indexing module for search-index

js-worker-search - JavaScript client-side search API with web-worker support

•    Javascript

JavaScript client-side search API with web-worker support

logagent-js - Extensible log shipper with input/output plugins, buffering, parsing, data masking, and small memory/CPU footprint

•    Javascript

Smart log parser written in Node

Foundatio.Repositories - Generic repositories

•    CSharp

Generic repository contract and implementations. Currently only implemented for Elasticsearch, but there are plans for other implementations.

changes-index - create indexes from a leveldb changes feed

•    Javascript

This package provides a way to create a materialized view on top of an append-only log.To update an index, just change the index code and delete the indexed data.

node-level-mapped-index

•    Javascript

A simple and flexible indexer for LevelDB, built on LevelUP and Map Reduce; allowing asynchronous index calculation.After initialising Mapped Index, your LevelUP instance will have some new methods that let you register new indexes and fetch values from them.

hyperdrive-index - index changes to a hyperdrive feed

•    Javascript

Use this package to generate indexes to quickly answer questions about files written to hyperdrive. For example, you could create an index that parses exif headers and generates thumbnails for a p2p photo album served over a hyperdrive.This example indexes the number of lines in each file written to hyperdrive.