Packet sniffer which displays TCP information like top(1)

http://BSDforge.com/projects/net-mgmt/tcptrack/

Set of configuration scripts for the TCSH shell

http://tcshrc.sourceforge.net/

Trivial Database

https://tdb.samba.org/

Trivial Database

http://tdb.samba.org/

Server side of the TeamSpeak group voice chat system

https://www.teamspeak.com

Toolkit for converting data between 8-bit legacy encodings and Unicode

http://scripts.sil.org/TECkit

X11 based RTF editor

http://www.nllgg.nl/Ted/

GLib utility library for the Telepathy framework

https://telepathy.freedesktop.org/

Logger utility library for the Telepathy framework

https://telepathy.freedesktop.org/

Emulates Matrix terminal's "green tears" effect

http://lightless.org/other/

Terminal Emulator for GNUstep

http://www.nongnu.org/backbone/

Terminus Font - a clean fixed width font

http://terminus-font.sourceforge.net

Terminus Font - a clean fixed width font (TTF version)

http://files.ax86.net/terminus-ttf/

Provides a common configuration to launch infrastructure

https://terraform.io/

Generate documentation from Terraform modules

https://github.com/terraform-docs/terraform-docs

Terraform provider for gridscale

https://github.com/terraform-providers/terraform-provider-gridscale

Terraform provider for Vultr

https://github.com/squat/terraform-provider-vultr

Tool to switch between different versions of terraform

https://tfswitch.warrensbox.com/

Commercial quality open source OCR engine

https://github.com/tesseract-ocr/tesseract

Trained language data for the Tesseract OCR engine

https://github.com/tesseract-ocr/tessdata

Talloc based event loop library

https://tevent.samba.org/

Talloc based event loop library

http://www.samba.org/

Basic TeX Engines

https://tug.org/texlive/

Convert a TeX DVI file to PostScript

Formats for basic TeX engines and the latex command

https://tug.org/texlive/

TeX backend for Jade, DSSSL processor for SGML/XML documents

http://jadetex.sourceforge.net/

Path searching library for TeX

Library for Japanese pTeX and its tools

Meta-port that creates a site-local TEXMF directory

TeX implementation translating WEB to C

Non-validating XML parser, written in TeX

Texinfo to HTML converter

http://texi2html.cvshome.org/

Typeset documentation system with multiple format output

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

TeX Live Typesetting System, base binaries

https://tug.org/texlive/

TeX Live Typesetting System, texmf Tree

https://tug.org/texlive/

TeXLive manager modules

Converts e-mail attachments to plain-text

http://raf.org/textmail/

Tiny/turbo/throttling HTTP server

http://www.acme.com/software/thttpd/

Xfce file manager

https://docs.xfce.org/xfce/thunar/Start

Archive plugin for the Thunar File Manager

https://goodies.xfce.org/projects/thunar-plugins/thunar-archive-plugin

Media tags plugin

https://goodies.xfce.org/projects/thunar-plugins/thunar-media-tags-plugin

Version Control System plugin for Thunar

http://goodies.xfce.org/projects/thunar-plugins/thunar-vcs-plugin

The virtual filesystem for Thunar

https://xfce.org/

Mozilla Thunderbird for FreeBSD

http://www.mozilla.com/thunderbird/

Fixes and tidies up HTML files

https://www.w3.org/People/Raggett/tidy/

Utility to clean up and pretty print HTML/XHTML/XML

http://tidy.sourceforge.net/

Tidy tidies HTML and XML documents

http://www.html-tidy.org/

Utility to clean up and pretty print HTML/XHTML/XML (with shared lib)

http://tidy.sourceforge.net/

Library and program to validate and fix HTML

http://tidyp.com/

Tools and library routines for working with TIFF images

http://www.simplesystems.org/libtiff/