BSD-3-Clause — independent software & tools
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unbound
Validating, recursive, caching DNS resolver
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unittest
C++ Unit Test Framework
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urdfdom
Unified Robot Description Format (URDF) parser
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urdfdom_headers
Headers for Unified Robot Description Format (URDF) parsers
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uriparser
URI parsing library (strictly RFC 3986 compliant)
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urlwatch
Get notified when a webpage changes
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uru
Use multiple rubies on multiple platforms
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urweb
Ur/Web programming language
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uuu
Universal Update Utility, mfgtools 3.0. NXP I.MX Chip image deploy tools
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uvg266
Open-source VVC/H.266 encoder
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uvicorn
ASGI web server
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v8
Google's JavaScript engine
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vampire
High-performance theorem prover
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vc
SIMD Vector Classes for C++
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vdirsyncer
Synchronize calendars and contacts
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vectorscan
High-performance regular expression matching library
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vmtouch
Portable file system cache diagnostics and control
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voro++
3D Voronoi cell software library
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vowpal-wabbit
Online learning algorithm
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vtk
Toolkit for 3D computer graphics, image processing, and visualization
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vttest
Test compatibility of VT100-compatible terminals
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wakatime-cli
Command-line interface to the WakaTime api
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wal2json
Convert PostgreSQL changesets to JSON format
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wavpack
Hybrid lossless audio compression
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weasyprint
Convert HTML to PDF
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weaviate
Open-source vector database that stores both objects and vectors
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weaviate-cli
Command-line interface for managing and interacting with Weaviate
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webp
Image format providing lossless and lossy compression for web images
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websocketpp
WebSocket++ is a cross platform header only C++ library
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wstunnel
Tunnel all your traffic over Websocket or HTTP2
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x3270
IBM 3270 terminal emulator for the X Window System and Windows
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xbyak
C++ JIT assembler for x86 (IA32), x64 (AMD64, x86-64)
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xdotool
Fake keyboard/mouse input and window management for X
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xml2rfc
Tool to convert XML RFC7749 to the original ASCII or the new HTML look-and-feel
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xmlcatmgr
Manipulate SGML and XML catalogs
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xmlrpc-c
Lightweight RPC library (based on XML and HTTP)
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xnvme
Cross-platform libraries and tools for efficient I/O and low-level control
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xsimd
Modern, portable C++ wrappers for SIMD intrinsics
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xtensor
Multi-dimensional arrays with broadcasting and lazy computing
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xtl
X template library
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xurls
Extract urls from text
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yamdi
Add metadata to Flash video
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yara
Malware identification and classification tool
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yara-x
Tool to do pattern matching for malware research
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yaws
Webserver for dynamic content (written in Erlang)
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yaz
Toolkit for Z39.50/SRW/SRU clients/servers
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yazpp
C++ API for the Yaz toolkit
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yconalyzer
TCP traffic analyzer
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ydiff
View colored diff with side by side and auto pager support
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yubikey-agent
Seamless ssh-agent for YubiKeys and other PIV tokens
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yuicompressor
Yahoo! JavaScript and CSS compressor
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zeek
Network security monitor
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zfp
Compressed numerical arrays that support high-speed random access
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zsh-f-sy-h
Feature-rich Syntax Highlighting for Zsh
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zsh-fast-syntax-highlighting
Feature-rich syntax highlighting for Zsh
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zsh-history-substring-search
Zsh port of Fish shell's history search
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zsh-syntax-highlighting
Fish shell like syntax highlighting for zsh
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zxc
High-performance asymmetric lossless compression library