Library for adding database/object validations

http://validatable.rubyforge.org/

HTTP server toolkit

https://github.com/ruby/webrick

Ruby whois library

https://whoisrb.org/ https://github.com/weppos/whois

Ruby standard library package 'xmlrpc'

https://github.com/ruby/xmlrpc

Streaming JSON parsing and encoding library for Ruby

https://github.com/brianmario/yajl-ruby

Ruby Unit Testing Utility

https://github.com/seattlerb/zentest

Fast program launch menu for X Window System

http://www.boomerangsworld.de/cms/tools/runner.html

Restricted User SHell, providing limited remote access to resources

https://puszcza.gnu.org.ua/software/rush/

Language with a focus on memory safety and concurrency

https://www.rust-lang.org/

Experimental Rust compiler front-end for IDEs

https://rust-analyzer.github.io/

Language with a focus on memory safety and concurrency (FreeBSD version)

https://www.rust-lang.org/

Generate Rust bindings from C (and some C++) code

https://github.com/rust-lang/rust-bindgen

Generate C bindings from Rust code

https://github.com/mozilla/cbindgen

Cross-platform Rust rewrite of the GNU coreutils

https://crates.io/crates/coreutils

FFI bindings for the rustls TLS library

https://github.com/rustls/rustls-ffi

Clone of the terminal emulator rxvt modified to support Unicode

http://software.schmorp.de/pkg/rxvt-unicode.html

Abbreviation (alphabet-->Japanese) dictionary (EPWING V1 format)

http://openlab.ring.gr.jp/edict/fpw/

C99 implementation of the TLS/SSL protocols

https://github.com/aws/s2n-tls

Subset of a well-known texture compression scheme

https://github.com/divVerent/s2tc/wiki

FUSE filesystem that uses Amazon S3 as a backing store

https://github.com/archiecobbs/s3backer

FUSE-based file system backed by Amazon S3

https://github.com/s3fs-fuse/s3fs-fuse

nsupdate utility with the GSS-TSIG support

https://www.isc.org/software/bind

Free SMB/CIFS and AD/DC server and client for Unix

https://gitlab.com/samba-freebsd/

Ninja-compatible build tool written in C

https://github.com/michaelforney/samurai

API for accessing scanners, digital cameras, frame grabbers, etc

http://www.sane-project.org/

Stand-Alone shell combining many common utilities

http://members.tip.net.au/~dbell/

Wrapper around libsass

https://libsass.org/

Build tool for Scala projects

https://www.scala-sbt.org/

Scala Programming Language

https://www.scala-lang.org/

Scan_ffs recovers lost disklabel

Small man page generator

https://git.sr.ht/~sircmpwn/scdoc/

Utility for translating German into the Schwaebisch dialect

http://unimut.fsk.uni-heidelberg.de/schwob.html

Smart Common Input Method platform

https://github.com/scim-im/scim

SCIM add-on to input various symbols with customisable on-screen pad

http://www.scim-im.org/

SCIM Chinese Smart Pinyin input method

https://github.com/scim-im/scim

SCIM IMEngine module like SKK

https://sourceforge.jp/projects/scim-imengine/

SCIM table based input method engine

https://github.com/scim-im/scim

SCIM table based Japanese input methods

https://github.com/scim-im/scim

SCIM IMEngine module using Tomoe

http://scim-imengine.sourceforge.jp/index.cgi?cmd=view;name=SCIMTomoe

ANSI C version of the SciMark2 benchmark

https://math.nist.gov/scimark2/download_c.html

ANSI C version of the SciMark2 benchmark

https://math.nist.gov/scimark2/download_c.html

Build tool alternative to make

https://scons.org/

Tiny shell that only permits scp and sftp

https://github.com/scponly/scponly/wiki

Converts the output of "vidcontrol -p" to PNG

Converts the output of "vidcontrol -p" to text

Multi-screen window manager

https://www.gnu.org/software/screen/

Multi-screen window manager

https://www.gnu.org/software/screen/

Multi-screen window manager

https://www.gnu.org/software/screen/

Small and lightweight screen(1) wrapper

https://sourceforge.net/projects/screenie/

Various X related scripts

https://cgit.freedesktop.org/xorg/app/scripts